This guide examines why USB technology represents one of the most significant cybersecurity threats, particularly due to its ubiquity and expanding attack surface. It explains how attackers exploit USB devices for malware delivery, data exfiltration, and supply chain attacks. Advanced threats such as BadUSB, Rubber Ducky, Bash Bunny, and malicious cables demonstrate how USB devices can act as hidden attack tools. The guide also highlights risks to industrial control systems (ICS), where USB devices remain widely used. By understanding these evolving threats and historical incidents like Stuxnet, organizations can better prioritize USB security controls and reduce exposure to high-impact attacks.

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