YouTube – NIST 800-171 Control 3.5.2 Authenticate identity of users/processes/devices as a prerequisite

CMMC Level 1 Assessment Guide

State of Alabama – System Maintenance Policy

Citrix Whitepaper – Best Practices for Securing Remote Access with Multi-Factor Authentication

Open Web Application Security Project (OWASP) – Testing for Account Enumeration and Guessable User Account

CyberSheath- How Multi-Factor Authentication Protects Your Business

SANS Whitepaper – Two-Factor Authentication (2FA) using OpenOTP

Duo Multi-Factor Authentication

RSA SecurID Access

Thales