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

A massive password-spraying attack has compromised over 80,000 Microsoft accounts, affecting Outlook, Teams, and Office.

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 ...

The new Outlook for Windows isn’t what anyone would call a fan favorite, but Microsoft keeps on trying. Today, it revealed ...

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

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 ...

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

Tom Burt, corporate vice president of Customer Security & Trust at Microsoft, called the near-term outlook "pessimistic." "Because these actors conduct both targeted and opportunistic attacks ...