State of Alabama – System Maintenance Policy

Citrix Blogs – Security best practices: Multi-factor authentication

Medium – Monitoring Applications to Prevent Unauthorized Access

Beyond Trust – 8 Steps to Reduce Remote Access Security Risks & Tighten Control over Vendor Access

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

NIST SP 800-53 Rev 5: MA–4 Nonlocal Maintenance

NIST SP 800-53 Rev 5: MA–2 Controlled Maintenance

NIST SP 800-53: IA-2 Identification and Authentication (Organization Users)

US-CERT – The Risk of Using Portable Devices

McAfee Total Protection