The Amnesic Incognito Live System (TAILS) is a security-focused, Debian-based Linux distribution aimed at preserving privacy and anonymity. It is designed to be run from a USB stick or a DVD, which ensures that the system does not leave any traces on the computer it is used on. When TAILS is shut down, it leaves no trace of having been run on the machine. This feature makes it particularly useful for users who need to use a secure and private operating system on potentially untrusted machines. Reference to TAILS and its functions can be found in various privacy and security guidelines.