November 23, 2021
Surveillance Self-Defence is the Electronic Frontier Foundation’s guide to defending yourself and your friends from surveillance by using secure technology and developing careful practices.
![](https://sheltercity.org/app/uploads/2021/11/ssd.eff_-2-1024x512.png)
Surveillance Self-Defence is the Electronic Frontier Foundation’s guide to defending yourself and your friends from surveillance by using secure technology and developing careful practices.