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

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 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 ...

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

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 ...