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Microsoft Teams to Enable Default Messaging Security Features in January 2026

First seen 31 Dec 2025, 21:25 UTC • •

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ThreatCluster •March 12, 2026 at 13:27 UTC

Starting January 12, 2026, Microsoft will automatically enable critical messaging safety features in Teams to enhance security against AI-driven threats. This change will affect tenants using standard configurations, marking a shift towards 'secure-by-default' principles in enterprise collaboration tools.

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