What we found
Insider data exfiltration
A conglomerate operating across several business units had moved to Microsoft 365 without extending security monitoring to cover it. The exposure was twofold: compromised accounts, and data leaving the organisation through legitimate file-sharing functionality.
We brought M365 authentication logs and file activity into the SOC, with detection tuned to the behaviours that matter in that environment. File access, modification and renaming are tracked with full user and timestamp attribution. Internal and external sharing are distinguished, so a document shared with a colleague and a document shared with an outside party are treated differently.
What we did
What we did
Monitoring identified compromised accounts through anomalous access patterns and unusual login locations. It also identified data leakage by employees, including file movement consistent with an individual preparing to leave the organisation.
Both were found before material loss occurred. Neither would have been visible without monitoring extended into the collaboration platform itself.
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