Microsoft announced it will expand the list of blocked attachments in Outlook Web and the new Outlook for Windows starting ...

EchoLeak affected Microsoft 365 Copilot, the AI assistant integrated across several Office applications, including Word, ...

Microsoft has released its June 2025 Patch Tuesday updates, fixing 66 flaws including a critical zero-day actively exploited ...

Microsoft also announced the deprecation of the Mail and Calendar apps, encouraging existing users to migrate to the new Outlook for Windows, which offers enhanced security. Mail and Calendar will ...

A security researcher has issued a warning to all 400 million users of Microsoft Outlook after discovering an email bug that could allow anyone to impersonate official Microsoft accounts.

The M365 AI agent could be tricked into releasing sensitive information via email and without a mouse click. Microsoft has ...

Outlook will block .library-ms and .search-ms attachments starting July 2025 to boost security across web and Windows apps.

Researchers uncover a critical AI flaw in Microsoft 365 Copilot, allowing silent data theft through email without any user ...

The zero-click hole, which was patched by Microsoft Tuesday, could point to far more vulnerabilities in the form-based architecture of Outlook. Among the large batch of security patches that ...