anti 1d3086a5c7 feat(web): GET /api/v1/ttp/techniques/{id}/groups — MITRE-tracked groups using a technique ...

Surfaces the intrusion-set reverse index from the loaded ATT&CK
bundle: given a technique, returns the list of groups MITRE has
documented as using it. Read-only — explicitly NOT an attribution
claim about a DECNET attacker. The frontend pulls this lazily when
the operator expands a technique panel; payload-size cost on every
TTPTagDetailRow makes embedding wasteful for techniques with 50+
documented groups.

- decnet/web/router/ttp/api_get_groups_for_technique.py exposes
  GET /api/v1/ttp/techniques/{technique_id}/groups, response_model
  list[GroupRef]. Same JWT-viewer auth gating as the rest of the
  TTP router. 404 when the technique_id doesn't resolve in the
  bundle.
- Sub-techniques are queried directly (no auto-union with parent)
  to match ATT&CK Navigator semantics; callers that want a broader
  view query the parent themselves.
- tests/ttp/test_groups_for_technique.py covers happy path, 404,
  sub-technique attribution independence, empty-list-on-zero-groups,
  and that responses include mitre_url + aliases.
- tests/web/test_api_attackers.py: fix pre-existing fixture drift
  introduced by a2a61b63 — three TestGetAttackerDetail cases were
  missing AsyncMock for repo.latest_observation_per_primitive,
  causing TypeError on await of MagicMock. The new groups endpoint
  doesn't share code with attacker_detail; this is a drive-by fix
  surfaced by the same suite run.

2026-05-09 06:45:25 -04:00

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