Generative AI Is Erasing Behavioral Tells, Weakening Behavior-Only Detection, Proofpoint Reports
Summary: Proofpoint said at its Protect 2026 conference that generative AI has made malicious email fluent, personalized and unique per recipient, eroding the behavioral signals filters have relied on for years. It cited an FBI Internet Crime Complaint Center count of more than 22,000 AI-related complaints in 2025 with nearly $900 million in losses, and 24,768 business email compromise complaints with about $3.05 billion in reported losses.
What's compelling: In one Proofpoint example, a single actor contacted more than 30 real estate agents at one company from different accounts, with different wording, before closing every thread with the same request to join a video meeting - and no single mailbox saw more than one message, so per-message scoring had nothing to compare against.
Read the original at The Hacker News ↗
- Topics
- Phishing & Social Engineering
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