Top 2026 2FA & AiTM Detection: Conditional Access Trusted-Location Bypass via Re
Detects successful Azure AD sign-in events where the session is marked as compliant or trusted by Conditional Access policies, but simultaneously flagged by Identity Protection as originating from an anonymized IP (e.g., residential proxy, VPN). This indicates an adversary has bypassed location-based Conditional Access controls, likely in the context of an Adversary-in-the-Middle (AiTM) phishing attack.
Sigma
