The NinjaStik is a USB drive that, when plugged into a computer, boots up a secure operating system based on Linux. It utilizes Tor to anonymize IP addresses and offers a full desktop environment with a suite of programs, including a secure email system. The NinjaStik is designed to protect users from surveillance and is used by organizations such as the Electronic Frontier Foundation and Wikileaks. It is compatible with both PCs and Macs and leaves no trace on the computer after use. The company offers customer support and a money-back guarantee.