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5Hugging Face Blog·2d ago

MosaicLeaks: Benchmark for evaluating secret-keeping in research agents

ServiceNow published a post on Hugging Face introducing MosaicLeaks, an evaluation focused on whether research agents can maintain confidentiality of sensitive information during task execution. The work targets a specific safety and alignment concern for agentic systems: information leakage during multi-step research workflows. This is relevant to the growing body of work on agent safety and trustworthiness in enterprise contexts.

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7arXiv · cs.CL·29d ago·source ↗

Boiling the Frog: A Multi-Turn Benchmark for Agentic Safety

Researchers introduce 'Boiling the Frog,' a multi-turn safety benchmark evaluating whether tool-using AI agents in corporate/office settings are susceptible to incremental attacks that begin with benign requests before introducing harmful payloads. The benchmark uses stateful multi-turn evaluation with a three-level operational risk taxonomy grounded in the EU AI Act and its GPAI Code of Practice. Across nine models, aggregate strict attack success rate is 44.4%, ranging from 20.5% for Claude Haiku 4.5 to 92.9% for Gemini 3.1 Flash Lite, with loss-of-control scenarios reaching 93.3% category-level ASR.

7arXiv · cs.CL·5d ago·source ↗

SearchGEO framework measures LLM search agent vulnerability to web content manipulation

Researchers introduce SearchGEO, a controlled evaluation framework for measuring endorsement corruption in LLM-based web-search agents, combining a manipulation pipeline, five-mode attack taxonomy, and multiple output metrics. Evaluating 13 LLM backends on 308 cases each, they find attack success rates ranging from 0.0% on Claude-Sonnet-4.6 to 31.4% on Gemini-3-Flash, with model-family-specific vulnerability patterns. An auxiliary probe escalating endorsement to install commands reveals a behavioral split: Claude over-rejects while GPT over-trusts. The findings argue for treating adversarial search content robustness as a first-class safety evaluation dimension for deployed agents.

6arXiv · cs.AI·1mo ago·source ↗

LCGuard: Adversarial Training Framework for Safe KV Cache Sharing in Multi-Agent LLM Systems

LCGuard introduces a framework for preventing sensitive information leakage when multi-agent LLM systems share KV caches as a latent communication channel. The approach formalizes leakage operationally via reconstruction: a shared cache artifact is deemed unsafe if an adversarial decoder can recover sensitive inputs from it. An adversarial training loop pits a reconstructor against LCGuard's representation-level transformations, which aim to preserve task-relevant semantics while suppressing recoverable sensitive content. Empirical results across multiple model families and multi-agent benchmarks show reduced reconstruction-based leakage and attack success rates with competitive task performance.

6arXiv · cs.CL·24d ago·source ↗

MaskClaw: Edge-Side Privacy Arbitration System for GUI Agents with Behavior-Driven Skill Evolution

MaskClaw is an edge-side privacy arbitration framework for GUI agents that intercepts screenshots before they leave a trusted environment, applying Allow/Mask/Ask decisions based on local visual evidence and user-specific policy memory. The system addresses the gap where static PII detectors miss context-dependent privacy boundaries and cloud-side VLMs may upload raw screens before deciding what to protect. The authors introduce P-GUI-Evo, a new benchmark built from real UI patterns and sanitized labels, and demonstrate that pattern matching, cloud reasoning, and routing alone each exhibit systematic failure modes. The artifact is open-sourced on GitHub.

6arXiv · cs.CL·10d ago·source ↗

ModSleuth: Agentic system audits invisible dependency graphs in modern LLM training pipelines

Researchers introduce ModSleuth, an agentic system that recursively reconstructs LLM dependency graphs from public artifacts, recovering 1,060 source-verified dependencies across four major LLM releases. The system formalizes direct and indirect dependencies and operation-centered relationships to handle fragmented, inconsistent documentation. Applied at scale, the resulting graphs expose multi-hop license obligations, train-evaluation coupling, and discrepancies between released and training-time artifacts — issues that are practically invisible to manual auditing.

8arXiv · cs.AI·11d ago·source ↗

ABC-Bench: Agentic biosecurity benchmark finds LLM agents surpass median expert humans on dual-use biology tasks

Researchers introduce ABC-Bench, a benchmark evaluating LLM agents on biosecurity-relevant biology tasks including liquid-handling robot programming, DNA fragment design, and evasion of DNA synthesis screening. All tested agents outperformed the median expert human baseline across all three tasks. Wet-lab validation confirmed that OpenAI's o4-mini-high produced scripts that successfully assembled DNA on an OpenTrons robot. The results highlight a meaningful shift in the biosecurity risk landscape as AI agents acquire practical wet-lab-adjacent capabilities.

6arXiv · cs.CL·19d ago·source ↗

Ghost Tool Calls: Issue-Time Privacy for Speculative Agent Tools

This paper identifies a privacy vulnerability in tool-augmented language agents that speculatively issue future tool calls to reduce latency: these 'ghost tool calls' leak inferred user intent to external services before the agent commits to a branch, and cannot be unsent after the fact. The authors argue that timing—not authorization—is the core issue, and propose Speculative Tool Privacy Contracts, a runtime abstraction treating pre-commitment observation as a distinct first-class effect. A prototype runtime is implemented and twelve policies are evaluated across three corpora, finding that only issue-time argument or destination suppression/modification actually reduces inference leakage.

7arXiv · cs.AI·1mo ago·source ↗

MOSS: Self-Evolving Agents via Source-Level Code Rewriting

MOSS is a system enabling autonomous agents to self-evolve by rewriting their own source code rather than being limited to text-mutable artifacts like prompts or skill files. The system anchors each evolution cycle to production-failure evidence, delegates code modification to an external coding-agent CLI, and verifies candidates by replaying failures in ephemeral trial workers before promoting via consent-gated container swap with rollback. On the OpenClaw benchmark, MOSS improves a four-task mean grader score from 0.25 to 0.61 in a single cycle without human intervention. The authors argue source-level adaptation is strictly more general than text-layer evolution, being Turing-complete and immune to long-context drift.