- Add validated mitre_attack frontmatter to all 754 skills (286 distinct
techniques), verified against MITRE ATT&CK v19.1 via the official
mitreattack-python library: 0 revoked, deprecated, or invalid IDs
- Curate precise per-skill technique IDs for forensics, malware-analysis,
threat-intel, and red-team skills (e.g. DCSync -> T1003.006,
Kerberoasting -> T1558.003, Pass-the-Ticket -> T1550.003)
- Reconcile v19.1 tactic restructuring: Defense Evasion split into
Stealth (TA0005) and Defense Impairment (TA0112); revoked T1562.*
family and T1070.001/.002 remapped to active equivalents (T1685.*)
- Normalize word-split tags across 35 skills (remove filename-derived
stopword tags, add semantic cybersecurity tags)
- Add api-reference.md for 3 skills that were missing it
- Update README ATT&CK section with accurate v19.1 tactic distribution
- Fix FilterCriteria to use singular Severity/Status with Value objects
instead of invalid plural Severities/Statuses arrays (SKILL.md + process.py)
- Fix get_entity_history: rename to get_investigation_indicators, use
investigation_id instead of entity_arn for InvestigationId parameter
- Replace invalid inv-* placeholders with 21-digit numeric IDs
- Fix Expected Output to match real API response structure (no embedded
Indicators; document separate list-indicators call and indicator types)
- Fix CLI --filter-criteria example to use correct format
- Update process.py --severity to accept single value with validation
- Add --max-results validation (1-100 range)
- Add pagination via _collect_all_pages helper for all list API calls
- Reorder Response Actions checklist: evidence preservation before containment
- Reorder Phase 5 workflow: preserve evidence first when safe