Surveillance Self-Defense

Surveillance Self-Defense is a project of the Electronic Frontier Foundation, an independent non-profit working to protect online privacy for over thirty years. This guide provides expert advice on protecting you and your friends from online spying. To get started, read our introduction to find out how online surveillance works. Then, dive into our tutorials for instructions on installing our pick of the best, most secure applications. We have more detailed information in our in-depth sections. If you’d like a guided tour, look for our list of common scenarios. Our popular guides include tips on surveillance and self-defense.