TENS stands for Trusted End Node Security. TENS is a non-installable, bootable Linux distribution that creates a secure end node from trusted media on almost any Intel-based computer, before booting into the operating system. No hard drive is mounted, no installer is offered. It’s temporary, it’s easy to use, and it turns an untrusted system into a trusted network client.
Before you get too excited, TENS isn’t a pen-testing distro for admins to use to harden their network. TENS is a live desktop Linux distribution that gives the user a level of security they would not have with a standard desktop. That means it’s great to use in places where network security is questionable, or when you need to submit sensitive data, and you don’t trust a standard desktop operating system. In other words, anytime you need to use a network for the transmission of sensitive data, TENS Linux could easily be a top choice for users.
TENS was developed by the Air Force Research Laboratory (AFRL) Information Directorate and began as the Anti-Tamper Software Protection Initiative in 2001 (with its flagship products Lightweight Portable Security and Encryption Wizard).