Surveillance Self-Defense is EFF's online guide to defending yourself and your friends from surveillance by using secure technology and developing careful practices.

EFF’s team of technologists and computer scientists engineers solutions to the problems of sneaky tracking, inconsistent encryption, and more. Where users face threats to their privacy and security online, EFF’s technology tools are there to defend them.

The Electronic Frontier Foundation is the leading nonprofit organization defending civil liberties in the digital world. Founded in 1990, EFF champions user privacy, free expression, and innovation through impact litigation, policy analysis, grassroots …

HTTP has serious problems that make it vulnerable to eavesdropping and content hijacking. HTTPS fixes most of these problems. That's why EFF, and many like-minded supporters, have been pushing for web sites to adopt HTTPS by default. As of 2021, about 90% of all web page visits were using HTTPS.

Read our work on privacy issues below, and join EFF to help support our efforts. For information about the law and technology of government surveillance in the United States check out EFF's Surveillance Self-Defense project.

Computer security and the lack of computer security is a fundamental issue that underpins much of how the Internet does (and doesn't) function. Many of the policy issues that EFF works on are linked to security in deep ways including privacy and …

2025年1月17日 · NEW YORK—EFF and a coalition of privacy defenders led by Lex Lumina filed a lawsuit today asking a federal court to stop the U.S. Office of Personnel Management (OPM) from disclosing millions of Americans’ private, sensitive information to Elon Musk and his “Department of Government Efficiency”...

We’re the Electronic Frontier Foundation, an independent non-profit working to protect online privacy for over thirty years. This is Surveillance Self-Defense: our expert guide to protecting you and your friends from online spying. Read the BASICS to find out how online surveillance works. Dive into our TOOL GUIDES for instructions...

EFF Sues DOGE and the Office of Personnel Management to Halt Ransacking of Federal Data

Both the law and technology must enhance people’s ability to speak. That’s why EFF fights to protect free speech - because everyone has the right to share ideas and experiences safely, especially when we disagree.