Checklist

2026 Email Security Best Practices: Defending Against AI and Human Error

AI has made phishing cleaner, more personal, and harder to catch before it reaches an employee. This guide breaks down the email security practices every security team should pressure-test in 2026, from domain authentication and inbox protection to high-risk request verification, phishing reporting, and human risk measurement. Use it to evaluate the controls and workflows that protect employees before attackers exploit familiar names, trusted vendors, or compromised accounts.

What’s inside:

1Understand why inbox filters alone are no longer enough to defend against modern phishing
2Learn the best practices that help reduce spoofing, compromised inboxes, risky approvals, and human error
3See how training, reporting, and continuous human risk measurement can strengthen email security in 2026