A3: INFRASTRUCTURE SECURITY ENHANCEMENT MANDATE (POST-ST8)

Mandate ID: A3 Affected Pillar: 02\_Infrastructure\_Pillar (Cygnus) Origin: Stress Test 8 (Failure State Optimization Review)

1. SECURITY VULNERABILITY SUMMARY (ST8 FINDING) Stress Test 8 revealed a vulnerability in the distributed node configuration that allowed for a theoretical 15% probability of stealth data injection into the operational layer during periods of high computational load. This vector must be eliminated.  
2. MANDATORY ENHANCEMENTS  
* A3.1: Cryptographic Hashing Protocol Upgrade: All data interchange between nodes must immediately be upgraded from SHA-256 to SHA-512 for enhanced collision resistance.  
* A3.2: Real-Time Integrity Monitoring: Implementation of a lightweight, real-time file integrity monitoring (FIM) agent on every operational node. Any hash mismatch must trigger an immediate node quarantine and Decoupling Protocol activation.  
* A3.3: Zero Trust Segmentation: Reinforce internal network segmentation, treating all internal network traffic between nodes as hostile by default (Zero Trust model).  
3. COMPLIANCE DEADLINE All Cygnus Pillar operators must confirm full implementation and validation of Mandate A3 by 2026-01-01.

