Microsoft 365 Defender has passed MITRE's evaluations for ransomware attack chains with flying colors. It was able to detect and protect against every major attack stage across multiple platforms.
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Microsoft has published a guidance for security admins about reporting of potential false positives. This follows a recent incident when the firm's Office updates were flagged as malware by Defender.
Microsoft has concluded that the Solorigate attacker was only able to get access to a small number of code files for Azure, Exchange, and Intune, and those did not contain live customer data.