Welcome — agentic security, decoded
One brief, every week — new attacks, defensive patterns, and tooling for securing AI agents.
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Tom Mooney.
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// Welcome
One brief.
Every week.
You’re in. AI agents stopped talking and started acting — and this
newsletter is where you learn to secure them. Every week, in one brief:
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01
New threats & incidents — what actually happened, and why it matters
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02
Defensive patterns & checklists you can lift into a design review
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03
Tooling and research worth your time — no filler
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Start with the evidence: we ran a structured prompt-injection benchmark
against the 20 most-used models —
12 of 20 were breached undefended,
and a few sentences of defensive prompt cut attack success to zero.
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The book — launching July 15, 2026
Agentic AI Security — the playbook, in print.
Join the waitlist and get the first three chapters (draft) free as a PDF today.
Join the waitlist →
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Glad you’re here. If something in your environment keeps you up at
night, hit reply — I read every response.
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— Tom
Author of Agentic AI Security
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Tom Mooney — Securing the execution layer
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