Which system calls are most likely to be used by a keylogger? - ProProfs Discuss
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Which system calls are most likely to be used by a keylogger?

Asked by Lzeltser, Last updated: May 18, 2024

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J. Alfie

J. Alfie

I Write for myself and many other clients. Blog post, Article writing and writing for ProProfs is my daily thing.

J. Alfie
J. Alfie, Content Writer, Masters in Literature, Dallas,Texas

Answered Dec 14, 2020

Keyloggers or keystroke logging, or keyboard capturing are programs that are used to record keystrokes. These are used by hackers to steal information. A keylogger can be hardware or software. Keyloggers use several keys to monitor or capture the keyboard information.

One popular key is the key that is API based; these key loggers hook the keyboard APIs inside a running application. The information is recorded like an application instead of malware.

The keyloggers record the activities using the Windows API such as GetAsyncKeyState (), GetForegroundWindow (). They are used to poll the state of the keyboard or to subscribe to keyboard events. The programs for keylogging are legal because it allows an organization to keep an eye on what their employees do.

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lzeltser

lzeltser

lzeltser
Lzeltser

Answered May 31, 2018

GetAsyncKeyState

GetAsyncKeyState determines whether the specified key is pressed at the moment when this system call is made. One of the ways a keylogger can spy on the users keyboard activities is to repeatedly iterate through all likely key values, checking whether each key is pressed.
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