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Brian Chastain

brian-chastain.com

Brian Chastain, “Field Notes”, is a tech site on brian-chastain.com, in English, funded by its readers: about 0 paying supporters on Buy Me a Coffee, estimated.

Field notes by Brian Chastain, a blog on AI model behaviour and the design of systems that constrain agents.

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Latest posts

From the site's feed, read 2026-10-14.

Pages

19 pages indexed; the pages that lead the site by its internal links:

Field Notes — Brian Chastain
https://brian-chastain.com/field-notes
Brian Chastain
https://brian-chastain.com/
About
https://brian-chastain.com/about
Contact
https://brian-chastain.com/contact
Prompt Injection Attack Surfaces: A Practical Taxonomy
https://brian-chastain.com/field-notes/prompt-injection-attack-surfaces
Outside-In: AI-Assisted Vulnerability Scanning When You Don't Have the Source
https://brian-chastain.com/field-notes/webapp-vuln-scanning-outside-in
Hermes Agent Wrote Its Own Client
https://brian-chastain.com/field-notes/the-agent-wrote-its-own-client
Determinative Ideation: You asked for advice, AI played along
https://brian-chastain.com/field-notes/determinative-ideation
The Diamond Graph
https://brian-chastain.com/field-notes/one-gate-instead-of-nine
AI Hacking vs. Hacking AI: Notes from the Field
https://brian-chastain.com/field-notes/ai-hacking-vs-hacking-ai
When AI Reads What You Told It Not To
https://brian-chastain.com/field-notes/ai-guardrail-bypass-patterns
AI Is a Delegate-Tier Solution. Most of Your Problems Aren't.
https://brian-chastain.com/field-notes/ead-before-ai

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