Privacy Badger is a browser add-on 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.
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).
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!
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 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.
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