Most Popular Detection – Vishing/Rogue MFA Takeover/Helpdesk-Support Impersonation 2026: Password Reset → MFA Re-Enrollment → Impossible-Travel Login Chain
Detects a suspicious sequence of events indicating account takeover: a password reset, followed by an MFA factor re-enrollment, and concluding with a successful login from a geographically impossible location compared to recent history. This pattern often signifies a help-desk-assisted account compromise or token theft.
YARA-L

