Exploiting MFA Inconsistencies on Microsoft Services
Summary
This article details how inconsistencies in Multi-Factor Authentication (MFA) implementation across various Microsoft services can be exploited during offensive engagements like penetration tests and red team assessments. The author, Beau Bullock, observed these weaknesses during recent operations.
IFF Assessment
FOE
The article discusses exploitable weaknesses in a common security control (MFA), which represents a vulnerability for defenders.
Defender Context
Defenders should be aware that even widely adopted security measures like MFA can have implementation flaws that attackers can leverage. It is crucial to ensure consistent and robust MFA enforcement across all connected services and to regularly audit configurations.