The researchers at Aim Security dubbed the flaw “EchoLeak.” Microsoft told Fortune that it has already fixed the issue in Microsoft 365 Copilot and that its customers were unaffected.

Microsoft fixed 111 vulnerabilities, including a Windows Kerberos zero-day enabling full AD compromise via BadSuccessor.

Today is Microsoft's August 2025 Patch Tuesday, which includes security updates for 107 flaws, including one publicly ...

This tool adds a highly trained virtual analyst to your security team in educational environments where IT personnel and ...

Security Copilot was first released in April and is also available in Defender, Purview and Sentinel. Microsoft said the tool is intended to help IT teams manage hybrid environments more efficiently.

Cybercriminals are abusing the link wrapping security feature from Proofpoint and Intermedia to launch sophisticated phishing ...

Microsoft declined to comment on the GPT-5 references in Copilot, and the company isn’t commenting on its new smart mode, ...

A security patch Microsoft (MSFT.O), opens new tab released this month failed to fully fix a critical flaw in the U.S. tech ...