M365TEAMS-003: External meeting participant settings
- Plataforma
- Entra ID / M365
- Categoría
- Microsoft Teams Security
- Severidad
- Medium
- Pilar de Zero Trust
- Applications & Workloads (peso 1)
- Fixtures de referencia
- 3
- Cobertura de ramas
- Observada: los fixtures prueban los veredictos que ejercitan
- Procedencia
- baseline
Qué comprueba
External meeting participant settings control what capabilities external users have when joining Teams meetings hosted by your organization. Allowing external participants to have presenter roles, bypass the lobby, or share screens without restriction can lead to meeting hijacking, unauthorized content sharing, and sensitive information exposure. Restricting external participant capabilities reduces the risk of meeting disruption and data leakage.
Valor recomendado
External participants default to attendee role; lobby bypass disabled for external users; screen sharing restricted to organizer and presenters only
Remediación
Configure the global meeting policy to require external participants to wait in the lobby and default to the attendee role when admitted to meetings. Restrict screen sharing and content sharing to meeting organizers and designated presenters to prevent unauthorized content sharing by external attendees. Create specific meeting policies for different user groups if some departments require more permissive settings for regular external collaboration.
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 |
| no-data | Not Assessed |
Mapeos a marcos de referencia
- CISA SCuBA
- MS.TEAMS.1.1v1
- NIST SP 800-53
- AC-20
- CIS M365 Benchmark
- 8.5.1