2026 Critical Cloud Identity Detection: Cross-Tenant Access Settings Modified to Trust an External Tenant
Detects modifications to Microsoft Entra ID (formerly Azure AD) cross-tenant access settings where a new partner is added or inbound trust settings (such as MFA or device compliance) are enabled for an external tenant. This activity may indicate an attempt to establish a persistent backdoor or facilitate initial access into the environment via a compromised or malicious external identity provider.
Microsoft Sentinel (KQL)
