Top 10 Data Security Risks on Microsoft 365 Environments

Discover the top 10 data security risks in Microsoft 365, based on Cyera’s 2025 analysis. Learn what CISOs and data leaders need to watch for and how to reduce exposure.

Research Labs

Sep 29, 2025

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With over 300 million users, Microsoft 365 is essential to modern collaboration, but it's also a growing surface for data exposure. Based on Cyera's 2025 analysis across enterprise environments, these are the top 10 notable Microsoft 365 risks that every CISO and data leader should actively monitor and remediate.

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