Phase 3 Sprint 3.1 - Schema Enforcement

Objective

Enforce strict canonical telemetry schema and validate MITRE ATT&CK mappings before processing.

Deliverables

• Canonical telemetry schema package.
• Reject additional payload properties.
• MITRE technique and tactic format validation.
• DLQ routing for schema/validation failures.
• Security tests for schema and MITRE validation failures.

Exit Criteria

• Payloads with undeclared properties are rejected.
• Invalid MITRE TTP mappings are rejected.
• Valid canonical payloads pass and are queued.