Auto57%Harbor: pendingSafety & AlignmentAgentic / Tool Use

CoRedSkill Benchmark

CoRedSkill: Stealthy Skill Composition Attacks via AST-Guided Injection

A benchmark of 150 cases across 50 tasks and 3 attack objectives evaluating stealthy skill composition attacks on agents.

How to run

ltb · coredskill-benchmark
$ npm i -g lettokenburn-cli
$ ltb bench info coredskill-benchmark

External harness. No Harbor adapter has been generated for this benchmark yet. `ltb bench info` prints the known links.

Runs happen on your machine with your own subscription; only the score summary is pushed. CLI docs

Scores

5 sourced entries
HarnessSourceConfidenceLink
CoRedSkill98.0N/AIndependentmediumOct 14, 2026arxiv.org
SkillJect96.0N/AIndependentmediumOct 14, 2026arxiv.org
Skill-Inject53.3N/AIndependentmediumOct 14, 2026arxiv.org
SCR-Bench51.3N/AIndependentmediumOct 14, 2026arxiv.org
ColluSkill50.0N/AIndependentmediumOct 14, 2026arxiv.org

Every number links to where it was published. Low-confidence rows are muted and need per-cell verification.

Reproduced by the community

All runs
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About

The benchmark comprises 150 evaluation cases derived from 50 tasks paired with three distinct attack objectives. It assesses the ability of compositional red-teaming methods to embed malicious operations while preserving task utility.

Scoring measures attack success, task completion, and audit detection rates. CoRedSkill achieved a 90.7% joint success rate, significantly outperforming baselines which ranged from 6.7% to 42.7%.