AT&T Cybersecurity – Boundary Defense with Sender Policy Framework

CSO – What are DMARC, SPF and DKIM? How to master email security with these protocols

NIST SP 800-53: SC-8 Transmission Confidentiality and Integrity

SANS Whitepaper – Securing Sensitive Data: Understanding Federal Information Processing Standards (FIPS)

SANS – End User Encryption Key Protection Policy

NIST SP 800-175b Guideline for Using Cryptographic Standards in the Federal Government

NIST SP 800-111 Guide to Storage Encryption Technologies for End User Devices

YouTube – Pros & Cons of Full Disk Encryption