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What (who) is 0x80 - definition
0x80
0x80 is a hacker interviewed by Brian Krebs of The Washington Post about his lucrative business in running "botnets", or networks of remotely controlled personal computers without the owner's consent. The article in the 2006 February Washington Post detailed 0x80's earnings of around $6,800 a month infecting controlled personal computers with adware and spyware in exchange for a per-computer commission.
system call
![A high-level overview of the Linux kernel's system call interface, which handles communication between its various components and the [[userspace]]](https://commons.wikimedia.org/wiki/Special:FilePath/Linux kernel interfaces.svg?width=200 "A high-level overview of the Linux kernel's system call interface, which handles communication between its various components and the [[userspace]]")
IN COMPUTER SCIENCE, THE MECHANISM USED BY AN APPLICATION PROGRAM TO REQUEST SERVICE FROM THE OPERATING SYSTEM OR ANOTHER APPLICATION PROGRAM
System calls; Syscall; System Call; Int 0x80; INT 0x80
<operating system, programming> The mechanism used by an
application program to request service from the {operating
system}. System calls often use a special machine code
instruction which causes the processor to change mode (e.g. to
"supervisor mode" or "protected mode"). This allows the OS
to perform restricted actions such as accessing hardware
devices or the memory management unit.
(1995-03-01)
System call
IN COMPUTER SCIENCE, THE MECHANISM USED BY AN APPLICATION PROGRAM TO REQUEST SERVICE FROM THE OPERATING SYSTEM OR ANOTHER APPLICATION PROGRAM
System calls; Syscall; System Call; Int 0x80; INT 0x80
In computing, a system call (commonly abbreviated to syscall) is the programmatic way in which a computer program requests a service from the kernel of the operating system on which it is executed. This may include hardware-related services (for example, accessing a hard disk drive or accessing the device's camera), creation and execution of new processes, and communication with integral kernel services such as process scheduling.
