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[email protected]andClaude Opus 4.6
70c7330bd6
Comprehensive security analysis of engine v2 covering: Threat model: 4 attacker profiles (malicious input, prompt injection via tools, poisoned memory, supply chain). Current state audit: 9 controls working (Monty sandbox, safety layer, policy engine, leases, provenance, events) and 9 gaps identified. Critical finding: ALL tools granted by default — CodeAct code can call shell, write_file, apply_patch without approval. Proposed fix: 3-tier tool classification (auto/approve-once/always-approve). CodeAct-specific threats: tool call amplification, prompt injection via search results, data exfiltration via tool chains, Monty escape. Self-improvement security: poisoned trace attacks, memory poisoning via reflection. Mitigations: edit validation, frequency caps, audit trail, auto-rollback, reflection output scanning. 6-layer security architecture proposed: input validation, capability gating, output sanitization, execution sandboxing, self-improvement controls, observability. Prioritized implementation plan with severity/effort ratings. Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>