MFA Bypass via Potential Session Hijacking or Rapid Impossible Travel

Ankit Mehta@Secvyn

•updated Jun 29, 2026•3•0•2

Detects instances where a user successfully authenticates using Multi-Factor Authentication (MFA) from one location, followed by a Single-Factor Authentication (SFA) logon from a different location within a 10-minute window. This behavior is indicative of potential session hijacking or session cookie theft where an attacker reuses an authenticated session or manipulates the authentication flow to bypass MFA requirements.