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Agents2026-08-28 · source-backed
arXiv 2608.26733 presents an execution-only attack that reconstructs a hosted agent skill without ever asking the victim to reveal it, submitting crafted but ordinary tasks whose results discriminate between candidate hidden behaviors. At the weakest access level, final response plus returned files only, it recovers 86.8% of the original skill's capability across 7 skills and 4 victim models, nearly 4x the SigLeak baseline, producing an installable skill from a median of 32 calls with disclosure defenses enabled. If your business is skill-gated agent access, file secrecy and disclosure filters aren't protecting the asset.
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Reported by the same outlet (arxiv.org); overlapping topics (agent, baseline, call, capability); pushes against this story (against).
Same source domain / Shared topic / Downstream implication
Reported by the same outlet (arxiv.org); overlapping topics (access, agent, attack, call); traces where this leads (which means).
Same source domain / Shared topic / Tension / Downstream implication
Reported by the same outlet (arxiv.org); overlapping topics (agent, behavior); pushes against this story (but).
Same source domain / Shared topic / Tension
Reported by the same outlet (arxiv.org); overlapping topics (agent, skill, task); pushes against this story (against).
Same source domain / Shared topic / Downstream implication
Reported by the same outlet (arxiv.org); overlapping topics (baseline, skill, task); traces where this leads (downstream).
Same source domain / Shared topic / Tension
Reported by the same outlet (arxiv.org); overlapping topics (agent, skill, task); pushes against this story (against).
Reported by the same outlet (arxiv.org); overlapping topics (agent, behavior, call); pushes against this story (against).
Reported by the same outlet (arxiv.org); overlapping topics (agent, attack, task); pushes against this story (against).