NIST SP 800-53 Rev 5: SI-8 Spam Protection

NIST SP 800-53 Rev 5: MA–3 Maintenance Tools

NIST SP 800-53 Rev 5: SI-3 Malicious Code Protection

US-CERT – The Risk of Using Portable Devices

McAfee Total Protection

RedHat – Using USBGuard

SANS – Removable Media Policy

SANS Whitepaper – Ubiquitous Security Backdoor (USB)

Tripwire – USB Threats to Cybersecurity of Industrial Facilities

InfoSec Institute – The Security Awareness Hazards of Removable Media