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

Security experts offer their takes on some of the flaws, including a set of vulnerabilities that could enable remote code ...

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

Starting in July, two new file types will be blocked in Microsoft Outlook. The .library-ms and .search-ms extensions both ...

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

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

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