{"data":{"id":"ca96d750-0310-4a4c-9b72-a795965521c2","title":"From Attack Surface to Defense Architecture: Compositional Security for Agentic Coding Harnesses","summary":"This paper argues that security in agentic coding harnesses is a structural property of the cognitive architecture and permission composition, not of individual models. It presents ActiveSecHarness, a neurosymbolic reference-monitor design using HMAC capability tokens, a two-dimensional taint lattice, and deterministic Ring-0 guards. On 252 fixtures, Ring 0 reports ABR 1.000 and FPR 0.000 in 12.7 μs, versus a local LLM judge that refuses 98.3% of benign work at 142.3 ms.","solution":"The paper proposes ActiveSecHarness: HMAC capability tokens across four Trust and Authority Rings, a 2D product taint lattice with a workspace provenance ledger, deterministic Ring-0 OS/tool guards, bytecode certificates, split-horizon audit logs, self-healing security test synthesis, and an adaptive UserWikiManager.","labels":["security","research"],"sourceUrl":"https://arxiv.org/abs/2611.13960v1","publishedAt":"2026-11-10T11:52:40.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":["prompt_injection"],"issueType":"research","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":[],"affectedVendorsRaw":["qwen3:4b"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"epssCheckedAt":null,"kevDateAdded":null,"advisoryAliases":null,"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":null,"disclosureDate":"2026-11-10T11:52:40.000Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":null,"crossRefCount":0,"attackSophistication":"advanced","impactType":["confidentiality","integrity","availability"],"aiComponentTargeted":"agent","llmSpecific":true,"classifierConfidence":0.93,"researchCategory":"preprint","atlasIds":["AML.T0051"]}}