Microsoft Entra user with multiple MFA failures

This condition is rated high severity because it indicates a significant risk of account takeover due to the potential for attackers to bypass MFA and gain unauthorized access to affected users' resources. The attacker gains information about the user's authentication credentials, which can support later attacker activity such as lateral movement within the organization.

Attackers can exploit repeated MFA failures by using brute-force or fatigue attacks to bypass MFA, thereby gaining unauthorized access to affected users' resources. This can lead to account takeover and data theft because the attacker gains capability to access sensitive information without proper authentication.

Cayosoft Guardian continuously monitors multifactor authentication events across the Entra ID system, identifying repeated MFA failures within a short period. When this occurs, Guardian flags the issue for administrators to take action and provide visibility into potential security threats.

Cayosoft Guardian alerts administrators to take immediate action when repeated MFA failures are detected, such as locking the affected account or requiring re-registration of MFA. This proactive approach limits the potential for attackers to exploit repeated MFA failures and gain unauthorized access, thereby supporting investigation and response efforts.