What is a Keylogger?

A keylogger is a program that records every keystroke made by users. They are primarily used by cybercriminals to intercept the submission of sensitive information like passwords and credit card numbers.

Key takeaways

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    Keyloggers can be used legally and illegally. Examples of legal uses of keyloggers include law enforcement monitoring for criminal activity and company's monitoring for internal threats on their devices.
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    There are two categories of keyloggers - hardware and software.
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    Kernel keyloggers are the most complex type of keylogger. Anti-rootkit software is required to detect them because they're designed to hide behind legitimate computer processes.
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