Most Important Detection – Vishing/Rogue MFA Takeover/Helpdesk-Support Impersonation 2026: MFA/Credential Reset by Help-Desk Without Out-of-Band Verification (T1098.005)

Detects MFA or credential reset activities on high-value or privileged accounts that lack a corresponding out-of-band verification signal, such as manager approval or identity proofing, within a one-hour window. This behavior is indicative of social engineering attempts where attackers manipulate help-desk procedures to bypass identity protections.