Online Behavioral Tracking

Who knows what you're doing when you browse the web?

New web technology has created many unexpected ways for corporations to track your web activity without your knowledge. Countless advertising networks are able to secretly monitor you across multiple websites and build detailed profiles of your behavior and interests.

New threats include "super-cookies " like Adobe's "Local Shared Objects" and Microsoft's "User Data Persistence." They include semi-legal data-sharing agreements between Internet service providers and data warehouses like Phorm and NebuAd. And they include social networking websites that allow advertisers too much access to their users' behavior and data.

EFF is working with lawmakers to close legal loopholes that enable unscrupulous tracking with corporations to teach them how to manage data responsibly and with the media to educate the public about corporate behavior and user rights.

Stay in Touch

NSA Spying

EFF is leading the fight against the NSA's illegal mass surveillance program. Learn more about what the program is, how it works, and what you can do.

Follow EFF

Hundreds attend EFA launch events in 9 cities across the U.S. this month: https://www.eff.org/deeplinks...

Apr 30 @ 7:12pm

Voicemail-to-text services have been around since at least 2001. Why was a patent for them issued in 2006? https://www.eff.org/deeplinks...

Apr 30 @ 9:12am

Learn about Rule 41, the scary new route the government could use to hack your computer: https://www.eff.org/deeplinks...

Apr 30 @ 8:48am
JavaScript license information