The Electronic Frontier Foundation (EFF) is an independent non-profit working to protect online privacy for over thirty years. Surveillance Self-Defense is EFF’s expert guide to protecting you and your friends from online spying.

Read the BASICS to find out how online surveillance works. Dive into EFF’s TOOL GUIDES for instructions to installing their pick of the best, most secure applications. They have more detailed information in their FURTHER LEARNING sections. If you’d like a guided tour, look for their list of common SECURITY SCENARIOS.