Keylogger
Software or hardware that records keystrokes to capture credentials and sensitive input.
A keylogger records keystrokes to harvest passwords, card numbers, and messages — a high-impact subtype of spyware. Software keyloggers are caught by anti-malware and EDR, but hardware keyloggers (a small device inline between keyboard and PC, or inside it) capture input before any software sees it and evade endpoint scanning entirely. MFA limits the damage of a stolen password, and on-screen keyboards or password-manager autofill sidestep simple keystroke capture.
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