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56,966 blogs · [ { "id": "01a08759-0da2-7321-afab-925922c6cd40", "title": "The Diamond Graph", "url": "https://brian-chastain.com/field-notes/one-gate-instead-of-nine/", "published_at": "2026-08-15T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-92592344dbd4", "title": "Hermes Agent Wrote Its Own Client", "url": "https://brian-chastain.com/field-notes/the-agent-wrote-its-own-client/", "published_at": "2026-08-07T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-925923db65e2", "title": "Screen Readers Solved Browser Agents Before Browser Agents Existed", "url": "https://brian-chastain.com/field-notes/screen-readers-solved-browser-agents/", "published_at": "2026-06-10T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-925924b027d8", "title": "AI Is a Delegate-Tier Solution. Most of Your Problems Aren't.", "url": "https://brian-chastain.com/field-notes/ead-before-ai/", "published_at": "2026-05-09T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-925925292c1c", "title": "Sandboxes or just Sand?: What 'Isolated' Should Actually Mean for AI", "url": "https://brian-chastain.com/field-notes/the-sandbox-that-wasnt/", "published_at": "2026-05-08T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-92592619c2c3", "title": "Which Model's Guardrails Fail First? — Cross-Model Refusal Benchmark v0", "url": "https://brian-chastain.com/field-notes/cross-model-refusal-v0/", "published_at": "2026-05-05T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-9259264507d6", "title": "Determinative Ideation: You asked for advice, AI played along", "url": "https://brian-chastain.com/field-notes/determinative-ideation/", "published_at": "2026-04-16T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-9259271e955c", "title": "Prompt Engineering: What Actually Moves the Needle", "url": "https://brian-chastain.com/field-notes/prompt-engineering-fundamentals/", "published_at": "2026-04-10T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-9259271ecdfb", "title": "Helpful, Compliant, and Around Your Firewall", "url": "https://brian-chastain.com/field-notes/the-helpful-bypass/", "published_at": "2026-04-08T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-925927ed9dbc", "title": "The Class That Taught Everything and Nothing", "url": "https://brian-chastain.com/field-notes/the-class-that-taught-everything-wrong/", "published_at": "2026-04-07T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-925927fa366a", "title": "101 Prompts Every AI Builder Should Test Before Going Live", "url": "https://brian-chastain.com/field-notes/101-prompts-red-team-training/", "published_at": "2026-04-06T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-9259286d51eb", "title": "AI Hacking vs. Hacking AI: Notes from the Field", "url": "https://brian-chastain.com/field-notes/ai-hacking-vs-hacking-ai/", "published_at": "2026-04-03T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-9259294daec1", "title": "When AI Reads What You Told It Not To", "url": "https://brian-chastain.com/field-notes/ai-guardrail-bypass-patterns/", "published_at": "2026-04-02T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-925929a88ed2", "title": "Outside-In: AI-Assisted Vulnerability Scanning When You Don't Have the Source", "url": "https://brian-chastain.com/field-notes/webapp-vuln-scanning-outside-in/", "published_at": "2026-03-30T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-92592a19f324", "title": "What I Keep Seeing That Nobody Is Writing Down", "url": "https://brian-chastain.com/field-notes/hello-world/", "published_at": "2026-03-29T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-92592afec955", "title": "Prompt Injection Attack Surfaces: A Practical Taxonomy", "url": "https://brian-chastain.com/field-notes/prompt-injection-attack-surfaces/", "published_at": "2026-03-29T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-92592b59de57", "title": "Scaling AI Vulnerability Scanning Beyond One File at a Time", "url": "https://brian-chastain.com/field-notes/scaling-ai-vuln-scanning/", "published_at": "2026-03-29T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-92592c0a1bf8", "title": "AI Risk: Field Observations From the Build Side", "url": "https://brian-chastain.com/field-notes/ai-risk-field-observations/", "published_at": "2025-07-16T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-92592c11a61f", "title": "Intent Over Capability", "url": "https://brian-chastain.com/field-notes/intent-over-capability/", "published_at": "2025-04-26T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-92592c41c7d1", "title": "When AI Builds What You Shouldn't Ship", "url": "https://brian-chastain.com/field-notes/when-ai-builds-what-you-shouldnt-ship/", "published_at": "2025-04-25T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-92592ce7e2a1", "title": "A Decision Framework for What Not to Build", "url": "https://brian-chastain.com/field-notes/what-not-to-build/", "published_at": "2025-04-24T00:00:00+00:00" }, { "id": "01a08759-0da2-7321-afab-92592d292474", "title": "AI-Assisted Security Testing: Where the Lines Are", "url": "https://brian-chastain.com/field-notes/ai-assisted-security-testing/", "published_at": "2024-12-19T00:00:00+00:00" } ] posts Claim your blog
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2026

The Diamond Graphoriginal ↗
15 Aug 2026
Hermes Agent Wrote Its Own Clientoriginal ↗
7 Aug 2026
Screen Readers Solved Browser Agents Before Browser Agents Existedoriginal ↗
10 Jun 2026
AI Is a Delegate-Tier Solution. Most of Your Problems Aren't.original ↗
9 May 2026
Sandboxes or just Sand?: What 'Isolated' Should Actually Mean for AIoriginal ↗
8 May 2026
Which Model's Guardrails Fail First? — Cross-Model Refusal Benchmark v0original ↗
5 May 2026
Determinative Ideation: You asked for advice, AI played alongoriginal ↗
16 Apr 2026
Prompt Engineering: What Actually Moves the Needleoriginal ↗
10 Apr 2026
Helpful, Compliant, and Around Your Firewalloriginal ↗
8 Apr 2026
The Class That Taught Everything and Nothingoriginal ↗
7 Apr 2026
101 Prompts Every AI Builder Should Test Before Going Liveoriginal ↗
6 Apr 2026
AI Hacking vs. Hacking AI: Notes from the Fieldoriginal ↗
3 Apr 2026
When AI Reads What You Told It Not Tooriginal ↗
2 Apr 2026
Outside-In: AI-Assisted Vulnerability Scanning When You Don't Have the Sourceoriginal ↗
30 Mar 2026
What I Keep Seeing That Nobody Is Writing Downoriginal ↗
29 Mar 2026
Prompt Injection Attack Surfaces: A Practical Taxonomyoriginal ↗
29 Mar 2026
Scaling AI Vulnerability Scanning Beyond One File at a Timeoriginal ↗
29 Mar 2026

2025

AI Risk: Field Observations From the Build Sideoriginal ↗
16 Jul 2025
Intent Over Capabilityoriginal ↗
26 Apr 2025
When AI Builds What You Shouldn't Shiporiginal ↗
25 Apr 2025
A Decision Framework for What Not to Buildoriginal ↗
24 Apr 2025

2024

AI-Assisted Security Testing: Where the Lines Areoriginal ↗
19 Dec 2024