466 security tests for AI agent systems — MCP, A2A, x402/L402, decision governance, benchmark integrity, skill supply chain. AIUC-1 pre-cert, NIST AI 800-2 aligned, 5 DOIs. v4.3.0

Full-scope APT simulation lab demonstrating a complete attack chain using Sliver C2 framework on linux-lite. Initial access → persistence & privilege escalation (systemd + SUID) → lateral movement via SSH key theft → covert data exfiltration. Includes MITRE ATT&CK mapping, detection notes, and IOCs.

Purple team APT emulation framework — 22 MITRE ATT&CK TTPs, adversary profiles (APT29/FIN7/Lazarus/APT41), ATT&CK Navigator export, Sigma rules per TTP, hash-chained audit log, FastAPI orchestrator, multi-platform beacon agent. Lab-safe, 167 tests.