![]() However, its serious drawback is high resource consumption. Keyboard state pollingĪ quite simple method that doesn’t require implementing the program in a graphical interface of the system. The difference consists in that WH_JOURNALRECORD doesn`t depend on Dynamic Link Libraries (DLLs). The most keyloggers use WH_Keyboard hook as a basis, while WH_JOURNALRECORD hook is used less frequently. ![]() In the Windows environment, ‘hook’ means interception of the system messages, using Win32Api programming element. Keylogger software can use various methods of capturing keystrokes made by the certain user. The working principles of software keyloggers In this article we’ll try to cover this topic in more detail, describing only software keyloggers, their types, working principles and areas of implementation. Keylogger is a special software or hardware appliance that is able to capture and record users` keystrokes, saving them to the log file (thus the name).
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