After reading “hundreds of top-secret NSA documents,” cryptographer Bruce Schneier advised us on some of the best ways to stay secure from NSA spying. Schneier gave five tips, including hiding in the network and anonymizing yourself by using Tor. Using public-domain encryption as opposed to proprietary software such as Microsoft’s BitLocker. BleachBit can also “vacuum Firefox, Google Chrome, Thunderbird, and Yum databases: shrink files without removing private information without deleting the whole file.”]