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Field Note 03Ai4 2026
Securing the Human Layer With Mimecast
Leslie Nielsen
Chief Information Security Officer · Mimecast
Human-Layer Security · 5:34
Las Vegas · August 2026
Las Vegas · August 2026
How AI is making cyberattacks more convincing and scalable, and why defending the human layer increasingly requires AI on the defensive side.
Watch
The question we asked
“What happens when AI makes cyberattacks more convincing, more scalable, and harder for humans to recognize?”
The Field Note
Attackers can now exploit trusted systems and legitimate infrastructure at a scale that makes simple awareness training less effective.
Security must focus on the human layer where communication, identity, behavior, and technology intersect, using AI to help people recognize increasingly believable attacks.
Three things to take away
- 01Telling employees to be more careful is no longer enough.
- 02Trusted infrastructure can still carry malicious intent.
- 03Defensive AI must strengthen human judgment rather than replace it.