What Is A Keylogger And How Does It Work?
A keylogger is a type of spyware that can be used to track and log the keys you strike on your keyboard, capturing any information typed. Keyloggers are insidious because you don’t know they’re there, watching and recording everything you type.
How do keylogging activities benefit cybercriminals? The data captured can include your personal and financial information, PIN codes and account numbers, credit card numbers, usernames, passwords, and other sensitive data — all of which can used to commit fraud or identity theft.
Keyloggers can be software or hardware. Software is more common. The majority of keyloggers are used to capture payment card data you might enter online with a device. Once captured, your data can be retrieved by the person on the other end of the keylogger program.
Many keyloggers have root-kit functionality. That means they’re hiding in your system. These so-called Trojan-spy programs can track user activity — including keystrokes and screenshots —save the data to your hard disk, and forward the information to cybercriminals.
An example of a hardware-based keylogger is the keyboard overlay on an ATM. Every time a bank customer presses the buttons on the criminal’s fake keypad — thinking it’s the legitimate ATM keypad — the keylogger records the keystrokes and forwards the information to the cybercriminal.
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