11/04/2026
MFA on, but the session still stolen?
Huntress tracked Microsoft 365 token replay across 79 organizations. Attackers reused post-MFA sign-in tokens, registered rogue devices, swapped MFA methods, and hid mail with short inbox rules. One case included a payroll-related outbound message.
This week for your tenant:
1. Revoke sessions, then reset the password
2. Check unfamiliar Entra devices
3. Audit MFA methods
4. Review odd inbox rules
5. Tighten Conditional Access / device-code flow
Calm prevention beats a hidden payroll email. Full post linked in bio.