The term keystroke logger, or keylogger for short, has come to be associated primarily with its use as an unauthorized or malicious tool installed to secretly capture all of the keystrokes typed on a compromised machine. The reality is that, like many malicious hacker tools, keystroke logging has its roots as an administrative and diagnostic tool. Unfortunately, some of the most helpful tools and utilities can end up being used for evil.
A keylogger is a hardware product or software utility that records every keystroke typed on the computer. It may simply log the keystrokes and require someone to manually retrieve the data, or it could be designed to automatically send the accumulated keylogger data to an e-mail address. Keylogger basics
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