|
Secure Attention Sequence
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 logging (computer security), login screen which must, to the user, be completely trustworthy. The operating system kernel (computer science), kernel, which interacts directly with the hardware, is able to detect whether the secure attention key has been pressed. When this event is detected, the kernel starts the trusted login processing. The secure attention key is designed to make login spoofing impossible, as the kernel will suspend any program, including those masquerading as the computer's login process, before starting a trustable login operation. Examples Some examples are: * Control-Alt-Delete#Windows NT family, for Windows NT. * Magic SysRq key, default sequence for Linux. Not a true Trusted Computer System Evaluation Criteria, C2-compliant SAK. See also * Control-Alt-Del * Magic SysRq key * Break key References Comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Key Combination
computing, a keyboard shortcut also known as hotkey is a series of one or several keys to quickly invoke a software program or perform a preprogrammed action. This action may be part of the standard functionality of the operating system or application program, or it may have been written by the user in a scripting language. Some integrated keyboards also include pointing devices; the definition of exactly what counts as a "key" sometimes differs. The meaning of term "keyboard shortcut" can vary depending on software manufacturer. In Windows, hotkeys consists of a specific key combination used to trigger an action (these are usually system-wide shortcuts that are available in all contexts so long as receiving program is active); mnemonics represent a designated letter in a menu command or toolbar button that when pressed together with the Alt key, activates such command. The term is generally associated with computer keyboards, but many electronic musical instruments now c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
