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.

Microsoft's August 2025 Patch Tuesday fixes 107 CVEs, including a critical Windows Kerberos zero-day and remote code ...

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

Microsoft Copilot Studio had a security issues which could have allowed threat actors to exfiltrate sensitive data from vulnerable endpoints, experts have warned. Cybersecurity researcher Evan ...

Microsoft will offer up to $5 million in bounty awards at this year's Zero Day Quest hacking contest, which the company ...

Microsoft is announcing six agentic offerings for its Security Copilot platform, which is ‘really taking automation to that next step’ for security teams, Microsoft’s Dorothy Li tells CRN.

Microsoft used Security Copilot to scan open source bootloaders for vulnerabilities It discovered 20 new flaws in just a short time Microsoft says the AI tool saved the company at least a week of work ...

Research demonstrating high-impact cloud and AI security flaws will be rewarded at Microsoft’s Zero Day Quest competition in ...

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

Released this past Tuesday, the latest Windows update patches 107 different security flaws in total, with 13 of them marked as critical. As usual, the monthly update is aimed at all current versions ...

Microsoft 365 Copilot, the AI tool built into Microsoft Office workplace applications including Word, Excel, Outlook, PowerPoint, and Teams, harbored a critical security flaw that, according to ...