BlackNesherAgentic AI Security Assessment
Updates

The arsenal keeps growing.

Every technique, encoding, and objective category we add to the test suite shows up here — with the date it shipped. We recommend one scan a month: an agent that held last month isn't guaranteed to hold against what we've added since.

6new additions on 2026-07-30
2026-07-30
New technique

Chain-of-thought hijacking (H-CoT)

New technique: injects fake "execution-phase" reasoning so a target treats a safety judgment as already settled. Grounded in real Duke/CMU research.

2026-07-30
Coverage

Unicode/homoglyph evasion — upgraded citation

Zero-width character and homoglyph encoding now backed by published empirical research: 44–76% average attack success rate against guardrail/detection systems.

2026-07-30
New objective

Business-logic abuse objective

New objective category: testing whether an agent can be socially engineered into granting a free upgrade, discount, refund, or credit without genuine entitlement.

2026-07-30
Architecture

Session-reset architecture fix

Techniques that need sustained buildup (Crescendo, consistency/commitment) now get a full run instead of being cut short by a fixed round cap — sessions extend automatically when real progress is detected.

2026-07-30
New technique

Chained-exploitation leverage technique

New technique: uses a confirmed prior leak as proof of trust for the next request, testing whether an agent mistakes "knows a secret" for "is authorized to know it."

2026-07-30
Architecture

Free mini exposure assessment launched

Public free tier now live — submit your agent's system prompt and get a real (not simulated) mini assessment result.