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- “Credential Storms: MFA Failures & Token Flooding”
“Credential Storms: MFA Failures & Token Flooding”
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MFA Prompt Fatigue Is Now a Mainstream Attack Vector
Attackers trigger repeated MFA notifications until users approve out of habit or annoyance. This tactic works especially well outside business hours. Users assume it’s a system bug rather than a threat in progress.
Refresh Tokens Are Being Reused for Extended Intrusions
Many services issue long-lived tokens that don’t expire quickly. Once stolen, they allow attackers to bypass login for weeks or months. Few systems alert when these tokens are used from unexpected locations.
Legacy Protocols Still Bypass MFA Checks Entirely
Outdated services like IMAP, POP3, and certain VPN clients skip MFA enforcement. If credentials are valid, attackers gain full access. These legacy paths are rarely disabled and often go unnoticed.
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Single sign-on tools often issue session tokens reused across different apps. If one app is compromised, others become vulnerable too. Lateral movement through tokens is rarely monitored.
Logout Doesn’t Always Terminate Server Sessions
Users believe logging out ends access, but backend tokens often remain active. Attackers continue to use these tokens long after logout. This creates a hidden gap in session management policies.
MFA Rules Lack Adaptive Contextual Awareness
Static MFA policies approve logins without evaluating IP, device, or time of day. Attackers exploit this predictability by mimicking known conditions. Adaptive risk scoring is needed, but rarely implemented correctly.
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