Secure attention key
SPECIAL KEY COMBINATION WHICH INVOKES A TRUSTED LOGIN PROCESS
Secure attention sequence; SAS secure attention sequence; Secure Attention Sequence; Secure Access Key
A secure attention key (SAK) or secure attention sequence (SAS) is a special key or key combination to be pressed on a computer keyboard before a login screen which must, to the user, be completely trustworthy. The operating system kernel, which interacts directly with the hardware, is able to detect whether the secure attention key has been pressed.