National Cyber Warfare Foundation (NCWF)

Decoding Microsoft 365 Audit Logs Using Bitfield Mapping: An Investigation Report


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2025-10-21 12:31:18
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Red Team (CNA)

Understanding exactly how users authenticate to cloud services is crucial for effective security monitoring. A recently refined bitfield mapping technique decodes the opaque UserAuthenticationMethod values in Microsoft 365 audit logs, transforming numeric codes into actionable, human-readable descriptions. This breakthrough empowers incident responders to identify primary authentication methods even when only Microsoft 365 audit logs are […]


The post Decoding Microsoft 365 Audit Logs Using Bitfield Mapping: An Investigation Report appeared first on GBHackers Security | #1 Globally Trusted Cyber Security News Platform.



Mayura Kathir

Source: gbHackers
Source Link: https://gbhackers.com/microsoft-365-audit-logs/


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