USB

A common peripheral connector; a vector for malware and data theft.

USB is a ubiquitous peripheral connector that doubles as a vector for malware introduction and data exfiltration, since a single port can carry both storage and input devices. Dropped USB drives are a classic social engineering tactic, and malicious devices can emulate a keyboard to inject commands. Controls include disabling autorun, port blocking through endpoint policy, and data loss prevention. It demonstrates that removable media remains a meaningful risk despite network focused defenses.