M365EXO-041: URL block-list comparison enabled (MS.EXO.15.1)
- Plataforma
- Entra ID / M365
- Categoría
- Advanced Threat Protection
- Severidad
- High
- Pilar de Zero Trust
- Applications & Workloads (peso 2)
- Fixtures de referencia
- 3
- Cobertura de ramas
- Observada: los fixtures prueban los veredictos que ejercitan
- Procedencia
- baseline
Qué comprueba
SCuBA MS.EXO.15.1 recommends that URL comparison with a block list be enabled. Time-of-click URL protection compares links against block lists and known-malicious site lists so users are stopped before reaching dangerous destinations. Without it, links that are weaponized after delivery remain clickable and unprotected.
Valor recomendado
Safe Links (or comparable) policy enabled for email with URL scanning active (EnableSafeLinksForEmail = True)
Remediación
Enable a Safe Links or comparable URL protection policy for email so links are scanned against block lists and known-malicious site lists at time of click. Apply the policy to all users and avoid broad do-not-rewrite URL exceptions. Safe Links requires a Defender for Office 365 plan; where unavailable, evaluate a comparable third-party link protection capability.
Veredictos probados con fixtures
Cada veredicto de esta tabla está probado por un fixture de referencia en la suite de pruebas que valida el módulo. La tabla se deriva de la última ejecución en verde; no puede editarse a mano.
| Escenario | Veredicto esperado |
|---|---|
| clean | PASS |
| known-bad | FAIL |
| throttled | Not Assessed |
Mapeos a marcos de referencia
- NIST SP 800-53
- SI-3
- MITRE ATT&CK
- T1566.002