Privacy Badger от EFF Technologists
Privacy Badger automatically learns to block invisible trackers. Instead of keeping lists of what to block, Privacy Badger automatically discovers trackers based on their behavior.
Privacy Badger sends the Global Privacy Control signal to opt you out of data sharing and selling, and the Do Not Track signal to tell companies not to track you. If trackers ignore your wishes, Privacy Badger will learn to block them.
Besides automatic tracker blocking, Privacy Badger replaces potentially useful trackers (video players, comments widgets, etc.) with click-to-activate placeholders, and removes outgoing link click tracking on Facebook and Google, with more privacy protections on the way.
I need help! I found a bug! What do I do now?
To get help or to report bugs, please email extension-devs@eff.org. If you have a GitHub account, you can use our GitHub issue tracker.
Why does Privacy Badger need access to my data for all websites?
When you install Privacy Badger, your browser warns that Privacy Badger can “access your data for all websites”. You are right to be alarmed. You should only install extensions made by organizations you trust.
Privacy Badger requires these permissions to do its job of automatically detecting and blocking trackers on all websites you visit. We are not ironically (or unironically) spying on you. For more information, see our Privacy Badger extension permissions explainer.
Note that the extension permissions warnings only cover what the extension has access to, not what the extension actually does with what it has access to (such as whether the extension secretly uploads your browsing data to its servers). Privacy Badger will never share data about your browsing unless you choose to share it (by filing a broken site report). For more information, see EFF’s Privacy Policy for Software.
Сообщить о нарушении правил этим дополнением
Если вы считаете, что это дополнение нарушает политики Mozilla в отношении дополнений, или имеет проблемы с безопасностью или приватностью, сообщите об этих проблемах в Mozilla, используя эту форму.
Не используйте эту форму, чтобы сообщать об ошибках или запрашивать новые функции в дополнении; это сообщение будет отправлено в Mozilla, а не разработчику дополнения.
Разработчик этого расширения просит вас помочь поддержать его дальнейшее развитие, внеся небольшое пожертвование.
Privacy Badger
Privacy Badger is not supported in this browser (more info).
- Other browsers
- Alternative installation options
Frequently Asked Questions
- What is Privacy Badger?
- How is Privacy Badger different from other blocking extensions?
- How does Privacy Badger work?
- What is a third party tracker?
- What do the red, yellow and green sliders in the Privacy Badger menu mean?
- Why does Privacy Badger block ads?
- Why doesn't Privacy Badger block all ads?
- What is Global Privacy Control (GPC)?
- What about tracking by the sites I actively visit, like NYTimes.com or Facebook.com?
- Does Privacy Badger contain a list of blocked sites?
- How was the cookie blocking yellowlist created?
- Does Privacy Badger prevent fingerprinting?
- Does Privacy Badger consider every cookie to be a tracking cookie?
- Does Privacy Badger account for a cookie that was used to track me even if I deleted it?
- Does Privacy Badger still learn when I set my browser to block all third-party cookies?
- Will you be supporting any other browsers besides Chrome, Firefox, Edge and Opera?
- Can I download Privacy Badger directly from eff.org?
- I run a domain that uses cookies or other tracking. How do I stop Privacy Badger from blocking me?
- Where can I find general information about Privacy Badger that I can use for a piece I'm writing?
- As an administrator, how do I configure Privacy Badger on my managed devices?
- What is the Privacy Badger license? Where is the Privacy Badger source code?
- How can I support Privacy Badger?
- How does Privacy Badger handle social media widgets?
- How do I uninstall/remove Privacy Badger?
- Is Privacy Badger compatible with other extensions, including adblockers?
- Is Privacy Badger compatible with Firefox's built-in content blocking?
- Why does my browser connect to fastly.com IP addresses on startup after installing Privacy Badger?
- Why does Privacy Badger need access to my data for all websites?
- I need help! I found a bug! What do I do now?
What is Privacy Badger?
Privacy Badger is a browser extension that stops advertisers and other third-party trackers from secretly tracking where you go and what pages you look at on the web. If an advertiser seems to be tracking you across multiple websites without your permission, Privacy Badger automatically blocks that advertiser from loading any more content in your browser. To the advertiser, it’s like you suddenly disappeared.
How is Privacy Badger different from other blocking extensions?
Privacy Badger was born out of our desire to be able to recommend a single extension that would automatically analyze and block any tracker or ad that violated the principle of user consent; which could function well without any settings, knowledge, or configuration by the user; which is produced by an organization that is unambiguously working for its users rather than for advertisers; and which uses algorithmic methods to decide what is and isn’t tracking.
As a result, Privacy Badger differs from traditional ad-blocking extensions in two key ways. First, while most other blocking extensions prioritize blocking ads, Privacy Badger is purely a tracker-blocker. The extension doesn’t block ads unless they happen to be tracking you; in fact, one of our goals is to incentivize advertisers to adopt better privacy practices. Second, most other blockers rely on a human-curated list of domains or URLs to block. Privacy Badger is an algorithmic tracker blocker – we define what “tracking” looks like, and then Privacy Badger blocks or restricts domains that it observes tracking in the wild. What is and isn’t considered a tracker is entirely based on how a specific domain acts, not on human judgment. (See also.)
How does Privacy Badger work?
When you view a webpage, that page will often be made up of content from many different sources. (For example, a news webpage might load the actual article from the news company, ads from an ad company, and the comments section from a different company that’s been contracted out to provide that service.) Privacy Badger keeps track of all of this. If as you browse the web, the same source seems to be tracking your browser across different websites, then Privacy Badger springs into action, telling your browser not to load any more content from that source. And when your browser stops loading content from a source, that source can no longer track you. Voila!
At a more technical level, Privacy Badger keeps note of the “third party” domains that embed images, scripts and advertising in the pages you visit. Privacy Badger looks for tracking techniques like uniquely identifying cookies, local storage “supercookies,” and canvas fingerprinting. If it observes a single third-party host tracking you on three separate sites, Privacy Badger will automatically disallow content from that third-party tracker.
By default, Privacy Badger receives periodic learning updates from Badger Sett, our Badger training project. This “remote learning” automatically discovers trackers present on thousands of the most popular sites on the Web. Privacy Badger no longer learns from your browsing by default, as “local learning” may make you more identifiable to websites. You may want to opt back in to local learning if you regularly browse less popular websites. To do so, visit your Badger’s options page and mark the checkbox for learning to block new trackers from your browsing.
What is a third party tracker?
When you visit a webpage parts of the page may come from domains and servers other than the one you asked to visit. This is an essential feature of hypertext. On the modern Web, embedded images and code often use cookies and other methods to track your browsing habits — often to display advertisements. The domains that do this are called “third party trackers”, and you can read more about how they work here.
What do the red, yellow and green sliders in the Privacy Badger menu mean?
Red means that content from this third party domain has been completely disallowed.
Yellow means that the third party domain appears to be trying to track you, but it is on Privacy Badger’s cookie-blocking “yellowlist” of third party domains that, when analyzed, seemed to be necessary for Web functionality. In that case, Privacy Badger will load content from the domain but will try to screen out third party cookies and referrers from it.
Green means “no action”; Privacy Badger will leave the domain alone.
Why does Privacy Badger block ads?
Actually, nothing in the Privacy Badger code is specifically written to block ads. Rather, it focuses on disallowing any visible or invisible “third party” scripts or images that appear to be tracking you even though you specifically denied consent by sending Do Not Track and Global Privacy Control signals. It just so happens that most (but not all) of these third party trackers are advertisements. When you see an ad, the ad sees you, and can track you. Privacy Badger is here to stop that.
Why doesn't Privacy Badger block all ads?
Because Privacy Badger is primarily a privacy tool, not an ad blocker. Our aim is not to block ads, but to prevent non-consensual invasions of people’s privacy because we believe they are inherently objectionable. We also want to create incentives for advertising companies to do the right thing. Of course, if you really dislike ads, you can also install a traditional ad blocker.
What is Global Privacy Control (GPC)?
Global Privacy Control (GPC) is a new specification that allows users to tell companies they’d like to opt out of having their data shared or sold. By default, Privacy Badger sends the GPC signal to every company you interact with alongside the Do Not Track (DNT) signal.
What’s the difference? Do Not Track is meant to tell companies that you don’t want to be tracked in any way (learn more about what we mean by “tracking” here). Privacy Badger gives third-party companies a chance to comply with DNT by adopting our DNT policy, and blocks those that look like they’re tracking you anyway.
When DNT was developed, many websites simply ignored users’ requests not to be tracked. That’s why Privacy Badger has to act as an enforcer: trackers that don’t want to comply with your wishes get blocked. Today, users in many jurisdictions have the legal right to opt out of some kinds of tracking. That’s where GPC comes in.
GPC is meant to be a legally-binding request to all companies in places with applicable privacy laws. For example, the California Consumer Privacy Act gives California residents the right to opt out of having their data sold. By sending the GPC signal, Privacy Badger is telling companies that you would like to exercise your rights. And while Privacy Badger only enforces DNT compliance against third-party domains, GPC applies to everyone – the first-party sites you visit, and any third-party trackers they might invite in.
The CCPA and other laws are not perfect, which is why Privacy Badger uses both approaches. It asks websites to respect your privacy, and it blocks known trackers from loading at all.
You can learn more about GPC and your rights here.
What about tracking by the sites I actively visit, like NYTimes.com or Facebook.com?
At present, Privacy Badger primarily protects you against tracking by third party sites. As far as privacy protections for “first party” sites (sites that you visit directly), Privacy Badger removes outgoing link click tracking on Facebook and Google. We plan on adding more first party privacy protections in the future.
We are doing things in this order because the most scandalous, intrusive and objectionable form of online tracking is that conducted by companies you’ve often never heard of and have no relationship with. First and foremost, Privacy Badger is there to enforce Do Not Track against these domains by providing the technical means to restrict access to their tracking scripts and images. The right policy for whether nytimes.com, facebook.com or google.com can track you when you visit that site – and the technical task of preventing it – is more complicated because often (though not always) tracking is interwoven with the features the site offers, and sometimes (though not always) users may understand that the price of an excellent free tool like Google’s search engine is measured in privacy, not money.
Does Privacy Badger contain a list of blocked sites?
Unlike other blocking tools, we have not made decisions about which sites to block, but rather about which behavior is objectionable. Domains will only be blocked if Privacy Badger observes the domain collecting unique identifiers after it was sent Do Not Track and Global Privacy Control signals.
Privacy Badger does contain a “yellowlist” of some sites that are known to provide essential third party resources; those sites show up as yellow and have their cookies blocked rather than being blocked entirely. This is a compromise with practicality, and in the long term we hope to phase out the yellowlist as these third parties begin to explicitly commit to respecting Do Not Track. The criteria for including a domain on the yellowlist can be found here.
How was the cookie blocking yellowlist created?
The initial list of domains that should be cookie blocked rather than blocked entirely was derived from a research project on classifying third party domains as trackers and non-trackers. We will make occasional adjustments to it as necessary. If you find domains that are under- or over-blocked, please file a bug on Github.
Does Privacy Badger prevent fingerprinting?
Browser fingerprinting is an extremely subtle and problematic method of tracking, which we documented with the Panopticlick project. Privacy Badger can detect canvas-based fingerprinting, and will block third party domains that use it. Detection of other forms of fingerprinting and protections against first-party fingerprinting are ongoing projects. Of course, once a domain is blocked by Privacy Badger, it will no longer be able to fingerprint you.
Does Privacy Badger consider every cookie to be a tracking cookie?
No. Privacy Badger analyzes the cookies from each site; unique cookies that contain tracking IDs are disallowed, while “low entropy” cookies that perform other functions are allowed. For instance a cookie like LANG=fr that encodes the user’s language preference, or a cookie that preserves a very small amount of information about ads the user has been shown, would be allowed provided that individual or small groups of users’ reading habits could not be collected with them.
Does Privacy Badger account for a cookie that was used to track me even if I deleted it?
Yes. When learning is enabled, Privacy Badger keeps track of cookies that could be used to track you and where they came from, even if you frequently clear your browser’s cookies.
Does Privacy Badger still learn when I set my browser to block all third-party cookies?
When learning is enabled and you tell your browser to deny third-party cookies, Privacy Badger still gets to learn from third parties trying to set cookies via HTTP headers (as well as from other tracking techniques such as canvas fingerprinting). Privacy Badger no longer gets to learn from cookies or HTML5 local storage being set via JavaScript, however. So, Privacy Badger’s learning still works, it’ll just learn to block fewer trackers.
Will you be supporting any other browsers besides Chrome, Firefox, Edge and Opera?
We are working towards Safari on macOS support. Safari on iOS seems to lack certain extension capabilities required by Privacy Badger to function properly.
Chrome on Android does not support extensions. To use Privacy Badger on Android, install Firefox for Android.
Privacy Badger does not work with Microsoft Edge Legacy. Please switch to the new Microsoft Edge browser. Note that Microsoft Edge does not support extensions on mobile devices.
Can I download Privacy Badger directly from eff.org?
If you use Google Chrome, you have to install extensions from Chrome Web Store. To install Privacy Badger in Chrome, visit Privacy Badger’s Chrome Web Store listing and click the “Add to Chrome” button there.
Otherwise, you can use the following links to get the latest version of Privacy Badger directly from eff.org:
- Firefox: https://www.eff.org/files/privacy-badger-latest.xpi
- Chromium: https://www.eff.org/files/privacy_badger-chrome.crx
I run a domain that uses cookies or other tracking. How do I stop Privacy Badger from blocking me?
One way is to stop tracking users who have turned on the Do Not Track signal (i.e., stop collecting cookies, supercookies or fingerprints from them). That will work for new Privacy Badger installs.
You can also unblock yourself by promising to meaningfully respect the Do Not Track signal. To do so, post a verbatim copy of EFF’s Do Not Track policy to the URL https://example.com/.well-known/dnt-policy.txt, where “example.com” is replaced by your domain. Posting EFF’s DNT policy on a domain is a promise of compliance with EFF’s DNT Policy by that domain.
Note that the domain must support HTTPS, to protect against tampering by network attackers. The path contains “.well-known” per RFC 5785. Also note that you must post a copy of the policy at each compliant subdomain you control. For example, if you wish to declare compliance by both sub1.example.com and sub2.example.com, you must post EFF’s DNT policy on each domain.
Where can I find general information about Privacy Badger that I can use for a piece I'm writing?
Glad you asked! Check out this downloadable press kit that we’ve put together.
As an administrator, how do I configure Privacy Badger on my managed devices?
What is the Privacy Badger license? Where is the Privacy Badger source code?
Privacy Badger’s source code is licensed under GPLv3+. This website’s source code is licensed under AGPLv3+.
How can I support Privacy Badger?
Thanks for asking! Individual donations make up about half of EFF’s support, which gives us the freedom to work on user-focused projects. If you want to support the development of Privacy Badger and other projects like it, helping build a more secure Internet ecosystem, you can throw us a few dollars here. Thank you.
If you want to help directly with the project, we appreciate that as well. Please see Privacy Badger’s CONTRIBUTING document for ways to get started.
How does Privacy Badger handle social media widgets?
Social media widgets (such as the Facebook Like button) often track your reading habits. Even if you don’t click them, the social media companies often see exactly which pages you’re seeing the widget on. When blocking social buttons and other potentially useful (video, audio, comments) widgets, Privacy Badger can replace them with click-to-activate placeholders. You will not be tracked by these replacements unless you explicitly choose to click them.
Note that Privacy Badger will not replace social media widgets unless it has blocked the associated tracker. If you’re seeing real social media widgets, it generally means that Privacy Badger hasn’t detected tracking from that variant of the widget, or that the site you’re looking at has implemented its own version of the widget.
How do I uninstall/remove Privacy Badger?
Firefox: See the Disable or remove Add-ons Mozilla help page.
Chrome: See the Install and manage extensions Chrome Web Store help page.
Opera: Click the menu button in the top left of the window, and then click “Extensions” and then “Manage Extensions.” Scroll until you see Privacy Badger, move your mouse over it, and then click the “X” icon in the upper right. Click “OK” to confirm removal. You can then safely close the Extensions tab.
Is Privacy Badger compatible with other extensions, including adblockers?
Privacy Badger should be compatible with other extensions.
While there is likely to be overlap between the various manually-edited advertising/tracker lists and Privacy Badger, unlike adblockers, Privacy Badger automatically learns to block trackers based on their behavior. This means that Privacy Badger may learn to block trackers your adblocker doesn’t know about.
Besides automatic learning, Privacy Badger comes with other advantages like cookie blocking, click-to-activate placeholders for potentially useful tracker widgets (video players, comments widgets, etc.), and outgoing link click tracking removal on Facebook and Google.
Privacy Badger is also a political tool. Privacy Badger sends the Global Privacy Control signal to opt you out of data sharing and selling, and the Do Not Track signal to tell companies not to track you. If trackers ignore your wishes, Privacy Badger will learn to block them. By using Privacy Badger, you support the Electronic Frontier Foundation and help fight for a better Web for everybody.
Is Privacy Badger compatible with Firefox's built-in content blocking?
It’s fine to use Firefox’s native content blocking and Privacy Badger together.
While there is overlap between Firefox’s tracker lists and Privacy Badger’s protections, unlike list-based blockers, Privacy Badger automatically discovers trackers. This means that Privacy Badger’s automatically-generated and regularly-updated blocklist may learn to block trackers that blockers with human-generated lists don’t know about. And if you enable local learning, your Badger will learn about the trackers you encounter as you browse as well.
See also the following FAQ entries:
Why does my browser connect to fastly.com IP addresses on startup after installing Privacy Badger?
EFF uses Fastly to host EFF’s Web resources: Fastly is EFF’s CDN. Privacy Badger pings the CDN for the following resources to ensure that the information in them is fresh even if there hasn’t been a new Privacy Badger release in a while:
EFF does not set cookies or retain IP addresses for these queries.
Why does Privacy Badger need access to my data for all websites?
When you install Privacy Badger, your browser warns that Privacy Badger can “access your data for all websites” (in Firefox, or “read and change all your data on the websites you visit” in Chrome). You are right to be alarmed. You should only install extensions made by organizations you trust.
Privacy Badger requires these permissions to do its job of automatically detecting and blocking trackers on all websites you visit. We are not ironically (or unironically) spying on you. For more information, see our Privacy Badger extension permissions explainer.
Note that the extension permissions warnings only cover what the extension has access to, not what the extension actually does with what it has access to (such as whether the extension secretly uploads your browsing data to its servers). Privacy Badger will never share data about your browsing unless you choose to share it (by filing a broken site report). For more information, see EFF’s Privacy Policy for Software.
I need help! I found a bug! What do I do now?
If a website isn’t working like it should, you can disable Privacy Badger just for that site, leaving Privacy Badger enabled and protecting you everywhere else. To do so, navigate to the site with the problem, click on Privacy Badger’s icon in your browser toolbar, and click the “Disable for this site” button in Privacy Badger’s popup. You can also quickly let us know about broken sites by clicking on the “Report broken site” button.
Did you run into “An unexpected error occurred” in Firefox? Your disk is probably low on space. All extensions have this problem; they just don’t all tell you about it. To fix, free up some disk space and then restart Firefox. If that didn’t help, please let us know (see below).
Как избавиться от слежки в интернете. Privacy Badger
Вы когда-нибудь замечали, что стоит посетить сайт с кроссовками, и реклама различных магазинов обуви будет преследовать вас несколько дней. Защита конфиденциальности в сети становится все более актуальной в современном мире и требует от нас дополнительных усилий, чтобы наши действия в интернете были защищены. Если вы готовы делится своей информацией с остальным миром без ограничений, то это статья не для вас. Закрывайте вкладку и продолжайте безмятежный сёрфинг. Но если вы хотите контролировать доступность своих действий в интернете, то у меня есть для вас решение — Privacy Badger.
Electronic Frontier Foundation (EFF), Фонд Электронных Рубежей — основанная в июле 1990 в США некоммерческая правозащитная организация с целью защиты заложенных в Конституции и Декларации независимости прав в связи с появлением новых технологий связи.
Сфера деятельности включает поддержку, разработку и развитие новых законопроектов для защиты гражданских прав пользователей, стратегии общих требований цензуры, многообразия сообществ и др. Существует за счёт вкладов индивидуальных членов и корпораций. EFF участвовала в судебных процессах против таких организаций, как Министерство юстиции США, Apple, Sony BMG и AT&T. В 2007 было открыто европейское отделение. Директором европейского отделения был Кори Доктороу. Деятельность Фонда отражается в произведениях, касающихся вопросов криптографии и прав в цифровом мире, в частности, в произведениях того же Доктороу и «Цифровой крепости» Дэна Брауна.
Так вот эта замечательная организация делает программное обеспечение, которое сообщает пользователю о следящих рекламных cookies и прочих сборщиках данных.
Privacy Badger защита конфиденциальности
Различные блокировщики рекламы, конечно, эффективны, вы почти не замечаете ее на страницах, но они никак не гарантируют отсутствие сбора данных и прочих скрытых действий. Badger блокирует любые и все однозначно идентифицирующие куки (те, которые собирают данные о посещаемых вами страницах через сайты, информацию о вашей системе или рекламных сетей) автоматически и зависит от их поведения. По моим наблюдением, это никак не сказывается на скорости сайта, скорее даже чуточку быстрее.
Раз уж Барсук (Badger) делает основную работу автоматически, то есть и возможность в ручную добавлять сайты в исключения. Не исключено, что некоторые рекламные блоки так же будут заблокированы. Индикация простая: зеленый — разрешено, красный — заблокировано. Есть расширение для браузеров на базе Chrome и Mozilla Firefox, чтобы перейти к установке нажмите ниже или посетите сайт разработчика.
Privacy Badger — расширение для запрета отслеживания браузера в Сети
У компаний, собирающих сведения о сетевых привычках пользователей, нет никакого интереса к вам лично. Им нужны данные о миллионах пользователей, чтобы на их основе расcчитывать типичные шаблоны поведения и проводить эффективные рекламные кампании.
Для сбора информации необходимо решить две задачи. Первая заключается в идентификации пользователей. Она решается путём присвоения каждому браузеру специального идентификатора, который создаётся на основе его цифрового отпечатка.
Вторая задача состоит в отслеживании передвижений пользователя. Для этого используются разные технологии, в том числе скрипты, cookie и трекеры, внедрённые в код веб-страниц.
Многие люди не видят никакой проблемы в том, что по их следу постоянно идут цифровые ищейки. Другие, наоборот, настолько озабочены этим, что разрабатывают специальные средства, которые затрудняют сбор информации.
Расширение Privacy Badger разработано Фондом электронных рубежей (Electronic Frontier Foundation, EFF), который был создан с целью защиты прав пользователей на приватную жизнь в связи с появлением современных технологий.
После установки расширения в панели браузера появится иконка с отображением числа заблокированных элементов. Не удивляйтесь, если в первое время их не будет. Дело в том, что Privacy Badger способен к самообучению. Если расширение видит, что на каждом открываемом вами сайте встречается один и тот же посторонний элемент, то оно начинает его блокировать. Поэтому через некоторое время значок всё чаще и чаще будет показывать красные цифры.
Если вы не доверяете встроенным алгоритмам, то можете самостоятельно указать расширению, какие трекеры блокировать, а какие — нет. Для этого передвиньте ползунок возле соответствующего элемента в крайнее левое положение.
Privacy Badger — надёжный и проверенный инструмент, который поможет вам сохранить свою конфиденциальность и не даст рекламным системам собирать данные о вашей истории передвижений по Сети. Рекомендуется к установке.
Privacy Badger: расширение для Firefox и Chrome, защищающее от слежки
Рекомендуем почитать:
Xakep #290. Киберфон
Фонд электронных рубежей выпустил бета-версию расширения Privacy Badger для браузеров Firefox и Chrome. Расширение блокирует следящие куки, трекеры и рекламные баннеры, которые встречаются на веб-страницах.
Расширение умеет обучаться в процессе работы. Например, если оно замечает, что какой-то рекламодатель отслеживает вас через несколько сайтов без разрешения, то автоматически начинает блокировать любой контент, загружаемый с сервера этого рекламодателя. С точки зрения рекламодателя пользователь как будто исчезает из Сети.
Расширение разработано с целью помочь простым пользователям избавиться от слежки: оно работает без какой-либо настройки, так что каждый человек может установить и сразу начать использовать его. Альфа-версия Privacy Badger вышла три месяца назад, и с тех пор его установили более 150 000 человек.
Разработчики говорят, что программный код Privacy Badger основан на Adblock Plus, но созданное ими расширение имеет определённые преимущества перед Disconnect, Adblock Plus, Ghostery и всеми остальными продуктами. Ни одна из упомянутых программ не работает без настройки. Все они требуют внесения определённых изменений в конфигурационные файлы, а некоторые из них используют неприемлемые бизнес-модели, получая доход от внесения сайтов в «белый список».
Авторы из Фонда электронных рубежей хотели сделать такое расширение, которое вообще не требует никакой настройки и при этом работает по модели свободного ПО, с открытым исходным кодом и под свободной лицензией. Однако, Privacy Badger не блокирует абсолютно все рекламные баннеры, расширение не ставит такой задачи. Его цель — блокировать только тот код, который пытается скрытно следить за пользователями. Таким образом, разработчики стараются поощрить рекламодателей, использующих правильные методы. Если вам хочется избавиться абсолютно от всей рекламы, Mozilla рекомендует установить стандартный блокировщик.
Privacy Badger
Privacy Badger is not supported in this browser (more info).
- Other browsers
- Alternative installation options
Frequently Asked Questions
- What is Privacy Badger?
- How is Privacy Badger different from other blocking extensions?
- How does Privacy Badger work?
- What is a third party tracker?
- What do the red, yellow and green sliders in the Privacy Badger menu mean?
- Why does Privacy Badger block ads?
- Why doesn't Privacy Badger block all ads?
- What is Global Privacy Control (GPC)?
- What about tracking by the sites I actively visit, like NYTimes.com or Facebook.com?
- Does Privacy Badger contain a list of blocked sites?
- How was the cookie blocking yellowlist created?
- Does Privacy Badger prevent fingerprinting?
- Does Privacy Badger consider every cookie to be a tracking cookie?
- Does Privacy Badger account for a cookie that was used to track me even if I deleted it?
- Does Privacy Badger still learn when I set my browser to block all third-party cookies?
- Will you be supporting any other browsers besides Chrome, Firefox, Edge and Opera?
- Can I download Privacy Badger directly from eff.org?
- I run a domain that uses cookies or other tracking. How do I stop Privacy Badger from blocking me?
- Where can I find general information about Privacy Badger that I can use for a piece I'm writing?
- As an administrator, how do I configure Privacy Badger on my managed devices?
- What is the Privacy Badger license? Where is the Privacy Badger source code?
- How can I support Privacy Badger?
- How does Privacy Badger handle social media widgets?
- How do I uninstall/remove Privacy Badger?
- Is Privacy Badger compatible with other extensions, including adblockers?
- Is Privacy Badger compatible with Firefox's built-in content blocking?
- Why does my browser connect to fastly.com IP addresses on startup after installing Privacy Badger?
- Why does Privacy Badger need access to my data for all websites?
- I need help! I found a bug! What do I do now?
What is Privacy Badger?
Privacy Badger is a browser extension that stops advertisers and other third-party trackers from secretly tracking where you go and what pages you look at on the web. If an advertiser seems to be tracking you across multiple websites without your permission, Privacy Badger automatically blocks that advertiser from loading any more content in your browser. To the advertiser, it’s like you suddenly disappeared.
How is Privacy Badger different from other blocking extensions?
Privacy Badger was born out of our desire to be able to recommend a single extension that would automatically analyze and block any tracker or ad that violated the principle of user consent; which could function well without any settings, knowledge, or configuration by the user; which is produced by an organization that is unambiguously working for its users rather than for advertisers; and which uses algorithmic methods to decide what is and isn’t tracking.
As a result, Privacy Badger differs from traditional ad-blocking extensions in two key ways. First, while most other blocking extensions prioritize blocking ads, Privacy Badger is purely a tracker-blocker. The extension doesn’t block ads unless they happen to be tracking you; in fact, one of our goals is to incentivize advertisers to adopt better privacy practices. Second, most other blockers rely on a human-curated list of domains or URLs to block. Privacy Badger is an algorithmic tracker blocker – we define what “tracking” looks like, and then Privacy Badger blocks or restricts domains that it observes tracking in the wild. What is and isn’t considered a tracker is entirely based on how a specific domain acts, not on human judgment. (See also.)
How does Privacy Badger work?
When you view a webpage, that page will often be made up of content from many different sources. (For example, a news webpage might load the actual article from the news company, ads from an ad company, and the comments section from a different company that’s been contracted out to provide that service.) Privacy Badger keeps track of all of this. If as you browse the web, the same source seems to be tracking your browser across different websites, then Privacy Badger springs into action, telling your browser not to load any more content from that source. And when your browser stops loading content from a source, that source can no longer track you. Voila!
At a more technical level, Privacy Badger keeps note of the “third party” domains that embed images, scripts and advertising in the pages you visit. Privacy Badger looks for tracking techniques like uniquely identifying cookies, local storage “supercookies,” and canvas fingerprinting. If it observes a single third-party host tracking you on three separate sites, Privacy Badger will automatically disallow content from that third-party tracker.
By default, Privacy Badger receives periodic learning updates from Badger Sett, our Badger training project. This “remote learning” automatically discovers trackers present on thousands of the most popular sites on the Web. Privacy Badger no longer learns from your browsing by default, as “local learning” may make you more identifiable to websites. You may want to opt back in to local learning if you regularly browse less popular websites. To do so, visit your Badger’s options page and mark the checkbox for learning to block new trackers from your browsing.
What is a third party tracker?
When you visit a webpage parts of the page may come from domains and servers other than the one you asked to visit. This is an essential feature of hypertext. On the modern Web, embedded images and code often use cookies and other methods to track your browsing habits — often to display advertisements. The domains that do this are called “third party trackers”, and you can read more about how they work here.
What do the red, yellow and green sliders in the Privacy Badger menu mean?
Red means that content from this third party domain has been completely disallowed.
Yellow means that the third party domain appears to be trying to track you, but it is on Privacy Badger’s cookie-blocking “yellowlist” of third party domains that, when analyzed, seemed to be necessary for Web functionality. In that case, Privacy Badger will load content from the domain but will try to screen out third party cookies and referrers from it.
Green means “no action”; Privacy Badger will leave the domain alone.
Why does Privacy Badger block ads?
Actually, nothing in the Privacy Badger code is specifically written to block ads. Rather, it focuses on disallowing any visible or invisible “third party” scripts or images that appear to be tracking you even though you specifically denied consent by sending Do Not Track and Global Privacy Control signals. It just so happens that most (but not all) of these third party trackers are advertisements. When you see an ad, the ad sees you, and can track you. Privacy Badger is here to stop that.
Why doesn't Privacy Badger block all ads?
Because Privacy Badger is primarily a privacy tool, not an ad blocker. Our aim is not to block ads, but to prevent non-consensual invasions of people’s privacy because we believe they are inherently objectionable. We also want to create incentives for advertising companies to do the right thing. Of course, if you really dislike ads, you can also install a traditional ad blocker.
What is Global Privacy Control (GPC)?
Global Privacy Control (GPC) is a new specification that allows users to tell companies they’d like to opt out of having their data shared or sold. By default, Privacy Badger sends the GPC signal to every company you interact with alongside the Do Not Track (DNT) signal.
What’s the difference? Do Not Track is meant to tell companies that you don’t want to be tracked in any way (learn more about what we mean by “tracking” here). Privacy Badger gives third-party companies a chance to comply with DNT by adopting our DNT policy, and blocks those that look like they’re tracking you anyway.
When DNT was developed, many websites simply ignored users’ requests not to be tracked. That’s why Privacy Badger has to act as an enforcer: trackers that don’t want to comply with your wishes get blocked. Today, users in many jurisdictions have the legal right to opt out of some kinds of tracking. That’s where GPC comes in.
GPC is meant to be a legally-binding request to all companies in places with applicable privacy laws. For example, the California Consumer Privacy Act gives California residents the right to opt out of having their data sold. By sending the GPC signal, Privacy Badger is telling companies that you would like to exercise your rights. And while Privacy Badger only enforces DNT compliance against third-party domains, GPC applies to everyone – the first-party sites you visit, and any third-party trackers they might invite in.
The CCPA and other laws are not perfect, which is why Privacy Badger uses both approaches. It asks websites to respect your privacy, and it blocks known trackers from loading at all.
You can learn more about GPC and your rights here.
What about tracking by the sites I actively visit, like NYTimes.com or Facebook.com?
At present, Privacy Badger primarily protects you against tracking by third party sites. As far as privacy protections for “first party” sites (sites that you visit directly), Privacy Badger removes outgoing link click tracking on Facebook and Google. We plan on adding more first party privacy protections in the future.
We are doing things in this order because the most scandalous, intrusive and objectionable form of online tracking is that conducted by companies you’ve often never heard of and have no relationship with. First and foremost, Privacy Badger is there to enforce Do Not Track against these domains by providing the technical means to restrict access to their tracking scripts and images. The right policy for whether nytimes.com, facebook.com or google.com can track you when you visit that site – and the technical task of preventing it – is more complicated because often (though not always) tracking is interwoven with the features the site offers, and sometimes (though not always) users may understand that the price of an excellent free tool like Google’s search engine is measured in privacy, not money.
Does Privacy Badger contain a list of blocked sites?
Unlike other blocking tools, we have not made decisions about which sites to block, but rather about which behavior is objectionable. Domains will only be blocked if Privacy Badger observes the domain collecting unique identifiers after it was sent Do Not Track and Global Privacy Control signals.
Privacy Badger does contain a “yellowlist” of some sites that are known to provide essential third party resources; those sites show up as yellow and have their cookies blocked rather than being blocked entirely. This is a compromise with practicality, and in the long term we hope to phase out the yellowlist as these third parties begin to explicitly commit to respecting Do Not Track. The criteria for including a domain on the yellowlist can be found here.
How was the cookie blocking yellowlist created?
The initial list of domains that should be cookie blocked rather than blocked entirely was derived from a research project on classifying third party domains as trackers and non-trackers. We will make occasional adjustments to it as necessary. If you find domains that are under- or over-blocked, please file a bug on Github.
Does Privacy Badger prevent fingerprinting?
Browser fingerprinting is an extremely subtle and problematic method of tracking, which we documented with the Panopticlick project. Privacy Badger can detect canvas-based fingerprinting, and will block third party domains that use it. Detection of other forms of fingerprinting and protections against first-party fingerprinting are ongoing projects. Of course, once a domain is blocked by Privacy Badger, it will no longer be able to fingerprint you.
Does Privacy Badger consider every cookie to be a tracking cookie?
No. Privacy Badger analyzes the cookies from each site; unique cookies that contain tracking IDs are disallowed, while “low entropy” cookies that perform other functions are allowed. For instance a cookie like LANG=fr that encodes the user’s language preference, or a cookie that preserves a very small amount of information about ads the user has been shown, would be allowed provided that individual or small groups of users’ reading habits could not be collected with them.
Does Privacy Badger account for a cookie that was used to track me even if I deleted it?
Yes. When learning is enabled, Privacy Badger keeps track of cookies that could be used to track you and where they came from, even if you frequently clear your browser’s cookies.
Does Privacy Badger still learn when I set my browser to block all third-party cookies?
When learning is enabled and you tell your browser to deny third-party cookies, Privacy Badger still gets to learn from third parties trying to set cookies via HTTP headers (as well as from other tracking techniques such as canvas fingerprinting). Privacy Badger no longer gets to learn from cookies or HTML5 local storage being set via JavaScript, however. So, Privacy Badger’s learning still works, it’ll just learn to block fewer trackers.
Will you be supporting any other browsers besides Chrome, Firefox, Edge and Opera?
We are working towards Safari on macOS support. Safari on iOS seems to lack certain extension capabilities required by Privacy Badger to function properly.
Chrome on Android does not support extensions. To use Privacy Badger on Android, install Firefox for Android.
Privacy Badger does not work with Microsoft Edge Legacy. Please switch to the new Microsoft Edge browser. Note that Microsoft Edge does not support extensions on mobile devices.
Can I download Privacy Badger directly from eff.org?
If you use Google Chrome, you have to install extensions from Chrome Web Store. To install Privacy Badger in Chrome, visit Privacy Badger’s Chrome Web Store listing and click the “Add to Chrome” button there.
Otherwise, you can use the following links to get the latest version of Privacy Badger directly from eff.org:
- Firefox: https://www.eff.org/files/privacy-badger-latest.xpi
- Chromium: https://www.eff.org/files/privacy_badger-chrome.crx
I run a domain that uses cookies or other tracking. How do I stop Privacy Badger from blocking me?
One way is to stop tracking users who have turned on the Do Not Track signal (i.e., stop collecting cookies, supercookies or fingerprints from them). That will work for new Privacy Badger installs.
You can also unblock yourself by promising to meaningfully respect the Do Not Track signal. To do so, post a verbatim copy of EFF’s Do Not Track policy to the URL https://example.com/.well-known/dnt-policy.txt, where “example.com” is replaced by your domain. Posting EFF’s DNT policy on a domain is a promise of compliance with EFF’s DNT Policy by that domain.
Note that the domain must support HTTPS, to protect against tampering by network attackers. The path contains “.well-known” per RFC 5785. Also note that you must post a copy of the policy at each compliant subdomain you control. For example, if you wish to declare compliance by both sub1.example.com and sub2.example.com, you must post EFF’s DNT policy on each domain.
Where can I find general information about Privacy Badger that I can use for a piece I'm writing?
Glad you asked! Check out this downloadable press kit that we’ve put together.
As an administrator, how do I configure Privacy Badger on my managed devices?
What is the Privacy Badger license? Where is the Privacy Badger source code?
Privacy Badger’s source code is licensed under GPLv3+. This website’s source code is licensed under AGPLv3+.
How can I support Privacy Badger?
Thanks for asking! Individual donations make up about half of EFF’s support, which gives us the freedom to work on user-focused projects. If you want to support the development of Privacy Badger and other projects like it, helping build a more secure Internet ecosystem, you can throw us a few dollars here. Thank you.
If you want to help directly with the project, we appreciate that as well. Please see Privacy Badger’s CONTRIBUTING document for ways to get started.
How does Privacy Badger handle social media widgets?
Social media widgets (such as the Facebook Like button) often track your reading habits. Even if you don’t click them, the social media companies often see exactly which pages you’re seeing the widget on. When blocking social buttons and other potentially useful (video, audio, comments) widgets, Privacy Badger can replace them with click-to-activate placeholders. You will not be tracked by these replacements unless you explicitly choose to click them.
Note that Privacy Badger will not replace social media widgets unless it has blocked the associated tracker. If you’re seeing real social media widgets, it generally means that Privacy Badger hasn’t detected tracking from that variant of the widget, or that the site you’re looking at has implemented its own version of the widget.
How do I uninstall/remove Privacy Badger?
Firefox: See the Disable or remove Add-ons Mozilla help page.
Chrome: See the Install and manage extensions Chrome Web Store help page.
Opera: Click the menu button in the top left of the window, and then click “Extensions” and then “Manage Extensions.” Scroll until you see Privacy Badger, move your mouse over it, and then click the “X” icon in the upper right. Click “OK” to confirm removal. You can then safely close the Extensions tab.
Is Privacy Badger compatible with other extensions, including adblockers?
Privacy Badger should be compatible with other extensions.
While there is likely to be overlap between the various manually-edited advertising/tracker lists and Privacy Badger, unlike adblockers, Privacy Badger automatically learns to block trackers based on their behavior. This means that Privacy Badger may learn to block trackers your adblocker doesn’t know about.
Besides automatic learning, Privacy Badger comes with other advantages like cookie blocking, click-to-activate placeholders for potentially useful tracker widgets (video players, comments widgets, etc.), and outgoing link click tracking removal on Facebook and Google.
Privacy Badger is also a political tool. Privacy Badger sends the Global Privacy Control signal to opt you out of data sharing and selling, and the Do Not Track signal to tell companies not to track you. If trackers ignore your wishes, Privacy Badger will learn to block them. By using Privacy Badger, you support the Electronic Frontier Foundation and help fight for a better Web for everybody.
Is Privacy Badger compatible with Firefox's built-in content blocking?
It’s fine to use Firefox’s native content blocking and Privacy Badger together.
While there is overlap between Firefox’s tracker lists and Privacy Badger’s protections, unlike list-based blockers, Privacy Badger automatically discovers trackers. This means that Privacy Badger’s automatically-generated and regularly-updated blocklist may learn to block trackers that blockers with human-generated lists don’t know about. And if you enable local learning, your Badger will learn about the trackers you encounter as you browse as well.
See also the following FAQ entries:
Why does my browser connect to fastly.com IP addresses on startup after installing Privacy Badger?
EFF uses Fastly to host EFF’s Web resources: Fastly is EFF’s CDN. Privacy Badger pings the CDN for the following resources to ensure that the information in them is fresh even if there hasn’t been a new Privacy Badger release in a while:
EFF does not set cookies or retain IP addresses for these queries.
Why does Privacy Badger need access to my data for all websites?
When you install Privacy Badger, your browser warns that Privacy Badger can “access your data for all websites” (in Firefox, or “read and change all your data on the websites you visit” in Chrome). You are right to be alarmed. You should only install extensions made by organizations you trust.
Privacy Badger requires these permissions to do its job of automatically detecting and blocking trackers on all websites you visit. We are not ironically (or unironically) spying on you. For more information, see our Privacy Badger extension permissions explainer.
Note that the extension permissions warnings only cover what the extension has access to, not what the extension actually does with what it has access to (such as whether the extension secretly uploads your browsing data to its servers). Privacy Badger will never share data about your browsing unless you choose to share it (by filing a broken site report). For more information, see EFF’s Privacy Policy for Software.
I need help! I found a bug! What do I do now?
If a website isn’t working like it should, you can disable Privacy Badger just for that site, leaving Privacy Badger enabled and protecting you everywhere else. To do so, navigate to the site with the problem, click on Privacy Badger’s icon in your browser toolbar, and click the “Disable for this site” button in Privacy Badger’s popup. You can also quickly let us know about broken sites by clicking on the “Report broken site” button.
Did you run into “An unexpected error occurred” in Firefox? Your disk is probably low on space. All extensions have this problem; they just don’t all tell you about it. To fix, free up some disk space and then restart Firefox. If that didn’t help, please let us know (see below).
Privacy Badger — расширение для запрета отслеживания браузера в Сети
У компаний, собирающих сведения о сетевых привычках пользователей, нет никакого интереса к вам лично. Им нужны данные о миллионах пользователей, чтобы на их основе расcчитывать типичные шаблоны поведения и проводить эффективные рекламные кампании.
Для сбора информации необходимо решить две задачи. Первая заключается в идентификации пользователей. Она решается путём присвоения каждому браузеру специального идентификатора, который создаётся на основе его цифрового отпечатка.
Вторая задача состоит в отслеживании передвижений пользователя. Для этого используются разные технологии, в том числе скрипты, cookie и трекеры, внедрённые в код веб-страниц.
Многие люди не видят никакой проблемы в том, что по их следу постоянно идут цифровые ищейки. Другие, наоборот, настолько озабочены этим, что разрабатывают специальные средства, которые затрудняют сбор информации.
Расширение Privacy Badger разработано Фондом электронных рубежей (Electronic Frontier Foundation, EFF), который был создан с целью защиты прав пользователей на приватную жизнь в связи с появлением современных технологий.
После установки расширения в панели браузера появится иконка с отображением числа заблокированных элементов. Не удивляйтесь, если в первое время их не будет. Дело в том, что Privacy Badger способен к самообучению. Если расширение видит, что на каждом открываемом вами сайте встречается один и тот же посторонний элемент, то оно начинает его блокировать. Поэтому через некоторое время значок всё чаще и чаще будет показывать красные цифры.
Если вы не доверяете встроенным алгоритмам, то можете самостоятельно указать расширению, какие трекеры блокировать, а какие — нет. Для этого передвиньте ползунок возле соответствующего элемента в крайнее левое положение.
Privacy Badger — надёжный и проверенный инструмент, который поможет вам сохранить свою конфиденциальность и не даст рекламным системам собирать данные о вашей истории передвижений по Сети. Рекомендуется к установке.
Privacy Badger
Privacy Badger не поддерживается в этом браузере (дополнительная информация).
- Другие браузеры
- Альтернативные варианты установки
Часто задаваемые вопросы
- Что такое Privacy Badger?
- How is Privacy Badger different from other blocking extensions?
- How does Privacy Badger work?
- What is a third party tracker?
- What do the red, yellow and green sliders in the Privacy Badger menu mean?
- Why does Privacy Badger block ads?
- Why doesn't Privacy Badger block all ads?
- What is Global Privacy Control (GPC)?
- What about tracking by the sites I actively visit, like NYTimes.com or Facebook.com?
- Does Privacy Badger contain a list of blocked sites?
- How was the cookie blocking yellowlist created?
- Does Privacy Badger prevent fingerprinting?
- Does Privacy Badger consider every cookie to be a tracking cookie?
- Does Privacy Badger account for a cookie that was used to track me even if I deleted it?
- Продолжает ли Privacy Badger учиться, когда я настроил браузер на блокировку всех сторонних куки-файлов?
- Will you be supporting any other browsers besides Chrome, Firefox, Edge and Opera?
- Can I download Privacy Badger directly from eff.org?
- I run a domain that uses cookies or other tracking. How do I stop Privacy Badger from blocking me?
- Where can I find general information about Privacy Badger that I can use for a piece I'm writing?
- As an administrator, how do I configure Privacy Badger on my managed devices?
- What is the Privacy Badger license? Where is the Privacy Badger source code?
- How can I support Privacy Badger?
- How does Privacy Badger handle social media widgets?
- How do I uninstall/remove Privacy Badger?
- Is Privacy Badger compatible with other extensions, including adblockers?
- Is Privacy Badger compatible with Firefox's built-in content blocking?
- Почему мой браузер подключается к IP-адресам fastly.com при запуске после установки Privacy Badger?
- Why does Privacy Badger need access to my data for all websites?
- Мне нужна помощь! Нашел ошибку! Что мне теперь делать?
Что такое Privacy Badger?
Privacy Badger — это расширение для браузера, которое не позволяет рекламодателям и другим сторонним трекерам тайно отслеживать, куда вы переходите и какие страницы просматриваете в интернете. Если кажется, что рекламодатель отслеживает вас на нескольких сайтах без вашего разрешения, Privacy Badger автоматически блокирует этого рекламодателя от загрузки любого дальнейшего содержимого в ваш браузер. Для рекламодателя это выглядит так, как будто вы внезапно исчезли.
How is Privacy Badger different from other blocking extensions?
Privacy Badger was born out of our desire to be able to recommend a single extension that would automatically analyze and block any tracker or ad that violated the principle of user consent; which could function well without any settings, knowledge, or configuration by the user; which is produced by an organization that is unambiguously working for its users rather than for advertisers; and which uses algorithmic methods to decide what is and isn’t tracking.
As a result, Privacy Badger differs from traditional ad-blocking extensions in two key ways. First, while most other blocking extensions prioritize blocking ads, Privacy Badger is purely a tracker-blocker. The extension doesn’t block ads unless they happen to be tracking you; in fact, one of our goals is to incentivize advertisers to adopt better privacy practices. Second, most other blockers rely on a human-curated list of domains or URLs to block. Privacy Badger is an algorithmic tracker blocker – we define what “tracking” looks like, and then Privacy Badger blocks or restricts domains that it observes tracking in the wild. What is and isn’t considered a tracker is entirely based on how a specific domain acts, not on human judgment. (See also.)
How does Privacy Badger work?
When you view a webpage, that page will often be made up of content from many different sources. (For example, a news webpage might load the actual article from the news company, ads from an ad company, and the comments section from a different company that’s been contracted out to provide that service.) Privacy Badger keeps track of all of this. If as you browse the web, the same source seems to be tracking your browser across different websites, then Privacy Badger springs into action, telling your browser not to load any more content from that source. And when your browser stops loading content from a source, that source can no longer track you. Voila!
At a more technical level, Privacy Badger keeps note of the “third party” domains that embed images, scripts and advertising in the pages you visit. Privacy Badger looks for tracking techniques like uniquely identifying cookies, local storage “supercookies,” and canvas fingerprinting. If it observes a single third-party host tracking you on three separate sites, Privacy Badger will automatically disallow content from that third-party tracker.
By default, Privacy Badger receives periodic learning updates from Badger Sett, our Badger training project. This “remote learning” automatically discovers trackers present on thousands of the most popular sites on the Web. Privacy Badger no longer learns from your browsing by default, as “local learning” may make you more identifiable to websites. You may want to opt back in to local learning if you regularly browse less popular websites. To do so, visit your Badger’s options page and mark the checkbox for learning to block new trackers from your browsing.
What is a third party tracker?
When you visit a webpage parts of the page may come from domains and servers other than the one you asked to visit. This is an essential feature of hypertext. On the modern Web, embedded images and code often use cookies and other methods to track your browsing habits — often to display advertisements. The domains that do this are called “third party trackers”, and you can read more about how they work here.
What do the red, yellow and green sliders in the Privacy Badger menu mean?
Red means that content from this third party domain has been completely disallowed.
Yellow means that the third party domain appears to be trying to track you, but it is on Privacy Badger’s cookie-blocking “yellowlist” of third party domains that, when analyzed, seemed to be necessary for Web functionality. In that case, Privacy Badger will load content from the domain but will try to screen out third party cookies and referrers from it.
Green means “no action”; Privacy Badger will leave the domain alone.
Why does Privacy Badger block ads?
Actually, nothing in the Privacy Badger code is specifically written to block ads. Rather, it focuses on disallowing any visible or invisible “third party” scripts or images that appear to be tracking you even though you specifically denied consent by sending Do Not Track and Global Privacy Control signals. It just so happens that most (but not all) of these third party trackers are advertisements. When you see an ad, the ad sees you, and can track you. Privacy Badger is here to stop that.
Why doesn't Privacy Badger block all ads?
Because Privacy Badger is primarily a privacy tool, not an ad blocker. Our aim is not to block ads, but to prevent non-consensual invasions of people’s privacy because we believe they are inherently objectionable. We also want to create incentives for advertising companies to do the right thing. Of course, if you really dislike ads, you can also install a traditional ad blocker.
What is Global Privacy Control (GPC)?
Global Privacy Control (GPC) is a new specification that allows users to tell companies they’d like to opt out of having their data shared or sold. By default, Privacy Badger sends the GPC signal to every company you interact with alongside the Do Not Track (DNT) signal.
What’s the difference? Do Not Track is meant to tell companies that you don’t want to be tracked in any way (learn more about what we mean by “tracking” here). Privacy Badger gives third-party companies a chance to comply with DNT by adopting our DNT policy, and blocks those that look like they’re tracking you anyway.
When DNT was developed, many websites simply ignored users’ requests not to be tracked. That’s why Privacy Badger has to act as an enforcer: trackers that don’t want to comply with your wishes get blocked. Today, users in many jurisdictions have the legal right to opt out of some kinds of tracking. That’s where GPC comes in.
GPC is meant to be a legally-binding request to all companies in places with applicable privacy laws. For example, the California Consumer Privacy Act gives California residents the right to opt out of having their data sold. By sending the GPC signal, Privacy Badger is telling companies that you would like to exercise your rights. And while Privacy Badger only enforces DNT compliance against third-party domains, GPC applies to everyone – the first-party sites you visit, and any third-party trackers they might invite in.
The CCPA and other laws are not perfect, which is why Privacy Badger uses both approaches. It asks websites to respect your privacy, and it blocks known trackers from loading at all.
You can learn more about GPC and your rights here.
What about tracking by the sites I actively visit, like NYTimes.com or Facebook.com?
At present, Privacy Badger primarily protects you against tracking by third party sites. As far as privacy protections for “first party” sites (sites that you visit directly), Privacy Badger removes outgoing link click tracking on Facebook and Google. We plan on adding more first party privacy protections in the future.
We are doing things in this order because the most scandalous, intrusive and objectionable form of online tracking is that conducted by companies you’ve often never heard of and have no relationship with. First and foremost, Privacy Badger is there to enforce Do Not Track against these domains by providing the technical means to restrict access to their tracking scripts and images. The right policy for whether nytimes.com, facebook.com or google.com can track you when you visit that site – and the technical task of preventing it – is more complicated because often (though not always) tracking is interwoven with the features the site offers, and sometimes (though not always) users may understand that the price of an excellent free tool like Google’s search engine is measured in privacy, not money.
Does Privacy Badger contain a list of blocked sites?
Unlike other blocking tools, we have not made decisions about which sites to block, but rather about which behavior is objectionable. Domains will only be blocked if Privacy Badger observes the domain collecting unique identifiers after it was sent Do Not Track and Global Privacy Control signals.
Privacy Badger does contain a “yellowlist” of some sites that are known to provide essential third party resources; those sites show up as yellow and have their cookies blocked rather than being blocked entirely. This is a compromise with practicality, and in the long term we hope to phase out the yellowlist as these third parties begin to explicitly commit to respecting Do Not Track. The criteria for including a domain on the yellowlist can be found here.
How was the cookie blocking yellowlist created?
The initial list of domains that should be cookie blocked rather than blocked entirely was derived from a research project on classifying third party domains as trackers and non-trackers. We will make occasional adjustments to it as necessary. If you find domains that are under- or over-blocked, please file a bug on Github.
Does Privacy Badger prevent fingerprinting?
Browser fingerprinting is an extremely subtle and problematic method of tracking, which we documented with the Panopticlick project. Privacy Badger can detect canvas-based fingerprinting, and will block third party domains that use it. Detection of other forms of fingerprinting and protections against first-party fingerprinting are ongoing projects. Of course, once a domain is blocked by Privacy Badger, it will no longer be able to fingerprint you.
Does Privacy Badger consider every cookie to be a tracking cookie?
No. Privacy Badger analyzes the cookies from each site; unique cookies that contain tracking IDs are disallowed, while “low entropy” cookies that perform other functions are allowed. For instance a cookie like LANG=fr that encodes the user’s language preference, or a cookie that preserves a very small amount of information about ads the user has been shown, would be allowed provided that individual or small groups of users’ reading habits could not be collected with them.
Does Privacy Badger account for a cookie that was used to track me even if I deleted it?
Yes. When learning is enabled, Privacy Badger keeps track of cookies that could be used to track you and where they came from, even if you frequently clear your browser’s cookies.
Продолжает ли Privacy Badger учиться, когда я настроил браузер на блокировку всех сторонних куки-файлов?
Когда обучение включено и вы указываете браузеру запретить сторонние куки-файлы, Privacy Badger все равно получает информацию о попытках третьих лиц установить куки-файлы через заголовки HTTP (а также о других методах отслеживания, например сбор цифровых отпечатков с использованием Canvas). Однако Privacy Badger больше не получает информации от cookies (или локального хранилища HTML5), устанавливаемых через JavaScript. Таким образом, обучение Privacy Badger по-прежнему работает, просто он научится блокировать меньшее количество трекеров.
Will you be supporting any other browsers besides Chrome, Firefox, Edge and Opera?
We are working towards Safari on macOS support. Safari on iOS seems to lack certain extension capabilities required by Privacy Badger to function properly.
Chrome on Android does not support extensions. To use Privacy Badger on Android, install Firefox for Android.
Privacy Badger does not work with Microsoft Edge Legacy. Please switch to the new Microsoft Edge browser. Note that Microsoft Edge does not support extensions on mobile devices.
Can I download Privacy Badger directly from eff.org?
If you use Google Chrome, you have to install extensions from Chrome Web Store. To install Privacy Badger in Chrome, visit Privacy Badger’s Chrome Web Store listing and click the “Add to Chrome” button there.
Otherwise, you can use the following links to get the latest version of Privacy Badger directly from eff.org:
- Firefox: https://www.eff.org/files/privacy-badger-latest.xpi
- Chromium: https://www.eff.org/files/privacy_badger-chrome.crx
I run a domain that uses cookies or other tracking. How do I stop Privacy Badger from blocking me?
One way is to stop tracking users who have turned on the Do Not Track signal (i.e., stop collecting cookies, supercookies or fingerprints from them). That will work for new Privacy Badger installs.
You can also unblock yourself by promising to meaningfully respect the Do Not Track signal. To do so, post a verbatim copy of EFF’s Do Not Track policy to the URL https://example.com/.well-known/dnt-policy.txt, where “example.com” is replaced by your domain. Posting EFF’s DNT policy on a domain is a promise of compliance with EFF’s DNT Policy by that domain.
Note that the domain must support HTTPS, to protect against tampering by network attackers. The path contains “.well-known” per RFC 5785. Also note that you must post a copy of the policy at each compliant subdomain you control. For example, if you wish to declare compliance by both sub1.example.com and sub2.example.com, you must post EFF’s DNT policy on each domain.
Where can I find general information about Privacy Badger that I can use for a piece I'm writing?
Glad you asked! Check out this downloadable press kit that we’ve put together.
As an administrator, how do I configure Privacy Badger on my managed devices?
What is the Privacy Badger license? Where is the Privacy Badger source code?
Privacy Badger’s source code is licensed under GPLv3+. This website’s source code is licensed under AGPLv3+.
How can I support Privacy Badger?
Thanks for asking! Individual donations make up about half of EFF’s support, which gives us the freedom to work on user-focused projects. If you want to support the development of Privacy Badger and other projects like it, helping build a more secure Internet ecosystem, you can throw us a few dollars here. Thank you.
If you want to help directly with the project, we appreciate that as well. Please see Privacy Badger’s CONTRIBUTING document for ways to get started.
How does Privacy Badger handle social media widgets?
Social media widgets (such as the Facebook Like button) often track your reading habits. Even if you don’t click them, the social media companies often see exactly which pages you’re seeing the widget on. When blocking social buttons and other potentially useful (video, audio, comments) widgets, Privacy Badger can replace them with click-to-activate placeholders. You will not be tracked by these replacements unless you explicitly choose to click them.
Note that Privacy Badger will not replace social media widgets unless it has blocked the associated tracker. If you’re seeing real social media widgets, it generally means that Privacy Badger hasn’t detected tracking from that variant of the widget, or that the site you’re looking at has implemented its own version of the widget.
How do I uninstall/remove Privacy Badger?
Firefox: See the Disable or remove Add-ons Mozilla help page.
Chrome: See the Install and manage extensions Chrome Web Store help page.
Opera: Click the menu button in the top left of the window, and then click “Extensions” and then “Manage Extensions.” Scroll until you see Privacy Badger, move your mouse over it, and then click the “X” icon in the upper right. Click “OK” to confirm removal. You can then safely close the Extensions tab.
Is Privacy Badger compatible with other extensions, including adblockers?
Privacy Badger should be compatible with other extensions.
While there is likely to be overlap between the various manually-edited advertising/tracker lists and Privacy Badger, unlike adblockers, Privacy Badger automatically learns to block trackers based on their behavior. This means that Privacy Badger may learn to block trackers your adblocker doesn’t know about.
Besides automatic learning, Privacy Badger comes with other advantages like cookie blocking, click-to-activate placeholders for potentially useful tracker widgets (video players, comments widgets, etc.), and outgoing link click tracking removal on Facebook and Google.
Privacy Badger is also a political tool. Privacy Badger sends the Global Privacy Control signal to opt you out of data sharing and selling, and the Do Not Track signal to tell companies not to track you. If trackers ignore your wishes, Privacy Badger will learn to block them. By using Privacy Badger, you support the Electronic Frontier Foundation and help fight for a better Web for everybody.
Is Privacy Badger compatible with Firefox's built-in content blocking?
It’s fine to use Firefox’s native content blocking and Privacy Badger together.
While there is overlap between Firefox’s tracker lists and Privacy Badger’s protections, unlike list-based blockers, Privacy Badger automatically discovers trackers. This means that Privacy Badger’s automatically-generated and regularly-updated blocklist may learn to block trackers that blockers with human-generated lists don’t know about. And if you enable local learning, your Badger will learn about the trackers you encounter as you browse as well.
See also the following FAQ entries:
Почему мой браузер подключается к IP-адресам fastly.com при запуске после установки Privacy Badger?
EFF использует Fastly для размещения веб-ресурсов EFF: Fastly — это CDN EFF. Privacy Badger пингует CDN для следующих ресурсов, чтобы убедиться, что информация в них актуальна, даже если в течение некоторого времени не было нового выпуска Privacy Badger:
EFF не устанавливает куки-файлы и не сохраняет IP-адреса для этих запросов.
Why does Privacy Badger need access to my data for all websites?
When you install Privacy Badger, your browser warns that Privacy Badger can “access your data for all websites” (in Firefox, or “read and change all your data on the websites you visit” in Chrome). You are right to be alarmed. You should only install extensions made by organizations you trust.
Privacy Badger requires these permissions to do its job of automatically detecting and blocking trackers on all websites you visit. We are not ironically (or unironically) spying on you. For more information, see our Privacy Badger extension permissions explainer.
Note that the extension permissions warnings only cover what the extension has access to, not what the extension actually does with what it has access to (such as whether the extension secretly uploads your browsing data to its servers). Privacy Badger will never share data about your browsing unless you choose to share it (by filing a broken site report). For more information, see EFF’s Privacy Policy for Software.
Мне нужна помощь! Нашел ошибку! Что мне теперь делать?
Если сайт не работает должным образом, вы можете выключить Privacy Badger только для этого сайта, оставив Privacy Badger включенным и защищающим вас на всех других сайтах. Для этого перейдите на сайт с проблемой, нажмите на значок Privacy Badger на панели инструментов браузера и нажмите кнопку «Отключить на этом сайте» во всплывающем окне Privacy Badger. Вы также можете быстро сообщить нам о неработающих сайтах, нажав на кнопку «Сообщить о неполадках на сайте».
Вы столкнулись с проблемой «An unexpected error occurred» в Firefox? Возможно, на вашем диске мало места. Эта проблема возникает у всех расширений, просто не все они сообщают вам об этом. Чтобы исправить ситуацию, освободите немного места на диске, а затем перезапустите Firefox. Если это не помогло, пожалуйста, сообщите нам (см. ниже).