Subscribe to the Non-Human & AI Identity Journal
Home FAQ Threats, Abuse & Incident Response Why do MFA codes still fail against vishing…
Threats, Abuse & Incident Response

Why do MFA codes still fail against vishing attacks?

← Back to all FAQ
By NHI Mgmt Group Editorial Team Updated June 7, 2026 Domain: Threats, Abuse & Incident Response

MFA codes fail when the attacker can harvest them in real time and replay them inside the valid session window. The weakness is not the factor itself but the trust boundary around reset, recovery, and proxied login flows. If those paths are weak, the second factor only confirms the attacker’s timing, not the user’s intent.

NHIMG Editorial Note
Reviewed and updated by the NHIMG editorial team on June 7, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org