Software or hardware which records all key strokes on a computer system.

Computer programs which damage files and data spreads when infected programs are copied.

Malicious software which replicates itself and spreads between computer systems and over networks.

Malware which pretends to be a genuinely useful program to trick the user into using it

A technique used to authenticate remote users, such as online shopping businesses

Establishing a user's identity

Use of fingerprints, retina scans, or other body features as an authentication mechanism

Measurements taken from a biometric sample

The process of registering a user for a biometric system by taking an initial sample

Also called cracking, refers to gaining unauthorized access to computer systems

A method of bypassing security in a system, built in by the system designers