Secure email gateways (SEGs) were built for a different threat landscape—one defined by spam, malware, suspicious links, and known-bad indicators. But today’s most dangerous email attacks often appear to be normal business communication. They use clean links, trusted infrastructure, familiar workflows, and convincing language to exploit identity, behavior, and trust.
As these attacks evolve, many organizations are reassessing whether their legacy SEG is still delivering meaningful protection. In environments built on native email providers like Microsoft 365 and Google Workspace, layering a SEG on top of built-in security capabilities can create redundant controls, added cost, and operational complexity. At the same time, it may still fail to close the detection gap associated with modern attacks.
In this discussion, cybersecurity experts discuss why legacy SEGs are falling short, how behavioral AI helps close the gap, and what security teams should consider as they modernize email security.
Key Takeaways
- Why legacy SEGs miss attacks that exploit identity, behavior, and trust
- How behavioral AI detects malicious intent without relying on traditional red flags
- How native email security and Abnormal create complementary protection
- How to assess whether your third-party SEG is still necessary
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