YouTube – NIST 800-171 Control 3.1.21 — Limit use of portable storage devices on external systems

CMMC Level 2 Assessment Guide

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

Colorado Department of Education – Sample Removable Storage Policy