Microsoft 365 has a glitch: Copilot has accessed users' private mail
19.02.2026
A glitch was discovered in Microsoft 365 that allowed the Copilot chatbot to access some users' private emails. The problem was not discovered until weeks after the incident began, raising concerns about the data security and privacy of enterprise customers around the world.According to Microsoft, the glitch affected a limited number of corporate accounts, but the exact number of affected users has not been disclosed. As a result of the bug, Copilot was able to view and analyze the contents of personal emails, which is against Microsoft 365's established privacy policies.The company promptly isolated the issue and implemented updates to prevent further unauthorized access. All affected organizations have been notified, and Microsoft experts continue to work with customer IT departments to assess potential impacts and minimize the risks of data breaches.The incident underscores the importance of regularly auditing AI tools and strengthening controls over access to sensitive information. Microsoft is committed to high security standards and plans to implement additional measures to prevent similar situations in the future.