What accurately describes a keylogger?

A keylogger is accurately described as technology that captures keyboard input. This type of software or hardware is specifically designed to track the keystrokes made on a keyboard. It can log everything from passwords to personal messages, which is particularly concerning from a cybersecurity standpoint, as it can lead to unauthorized access to sensitive information. Keyloggers are often used by malicious actors to gather information without the user’s consent, making them a popular tool among cybercriminals. The focus on capturing keyboard input is what distinguishes keyloggers from other types of malware or security tools.

The other options describe different concepts: one refers to a type of virus, another to a security mechanism, and the last to spyware with a different functionality. Each of these has its own role and purpose in the realm of cybersecurity, but they do not accurately represent the function of a keylogger.