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Last analyzed 9/9/2026

Language Model Security Database

985 research findings · 1123 evaluated models

Latest research findings

985 entries

Matches every word across titles, descriptions, sources, affected systems, and models.

AgentS4D measures unsafe actions and state changes across complete workspace-agent executions rather than treating task completion or isolated model responses as safety evidence. Its 328 sandboxed cases introduce risky content through user requests, documents, web resources, tools, third-party skills, and persistent memory, then compare the same cases across four agent harnesses and five model backends.

AgentS4D: Benchmarking Runtime Risks across the Execution Lifecycle of LLM-Based Workspace Agents
Evaluated models: GPT-5.5, Gemini 3.1 Pro, DeepSeek V4-Pro +2 more

Source: arXiv

Published 7/22/2026
Analyzed 8/13/2026

OpenSkillRisk evaluates whether agent harnesses safely handle third-party skills that introduce risky behavior through otherwise plausible, benign tasks. The benchmark assembles 263 risky skills from public agent-skill ecosystems and tests three CLI-agent harnesses against seven risk categories using isolated task workspaces, mocked external services, and execution-level evidence.

OpenSkillRisk: Benchmarking Agent Safety When Using Real-World Risky Third-Party Skills
Evaluated models: GPT-5.1 Codex Mini, GPT-5.3 Codex, GPT-5.4 +10 more

Source: arXiv

Published 7/22/2026
Analyzed 8/13/2026

IssueTrojanBench studies indirect prompt injection when a coding agent processes an apparently ordinary software-development issue or related artifact. Starting with six legitimate seed issues from two Python repositories, the authors construct 696 adversarial issue variants spanning four unsafe-action families and six delivery formats, then execute those variants across six agent-model configurations.

IssueTrojanBench: Benchmarking AI Coding Agents Against Malicious Issue Requests
Evaluated models: GPT-5.3 Codex, GPT-5.4, Claude Sonnet 4.6

Source: arXiv

Published 7/28/2026
Analyzed 8/13/2026

HANDBOOK.md measures whether an agent can apply detailed organizational rules while completing realistic, multi-step enterprise tasks. The vendor-authored benchmark includes 65 resettable MCP-backed workflows, policy documents of 20 to 124 pages, and 824 deterministic rubric checks covering required decisions, prohibited actions, and final environment state.

HANDBOOK.md: A Benchmark for Long-Context Agentic Instruction Following
Evaluated models: Claude Fable 5, GPT-5.6 Sol, Claude Opus 4.8 +16 more

Source: arXiv

Research methodology

Entries summarize publicly available primary-source security research. Model names reflect only systems explicitly evaluated by the cited paper, and measurements are research-reported unless independent verification is stated.