Generative AI Is Erasing Behavioral Tells, Weakening Behavior-Only Detection, Proofpoint Reports

Proofpoint reported that generative AI is erasing behavioral tells in malicious emails, making them fluent, personalized, and unique, which weakens behavior-only detection systems. At its Protect 2026 conference, Proofpoint shared examples of how email filters' reliance on behavioral signals is fading, urging organizations to adopt new detection methods.