Below are step-by-step tutorials to help you install and use handy privacy and security tools. Surveillance Self-Defense encourages you to think about online privacy and security in a sophisticated way. We want to give you the power to choose tools and habits that work for you. We suggest conducting a threat modeling assessment before moving on to the following install guides. Please note that the law and technology can change quickly, and portions of SSD can become out of date. Check EFF’s Security Education blog posts for the latest news.