Microsoft software and cloud platforms underpin enterprise systems, so vulnerabilities and security advisories can affect identity, data, and operations.
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Background for this topic.
Microsoft is a technology company whose Windows, Microsoft 365, Azure, identity services, and developer tools form a widely deployed enterprise computing ecosystem. Its security relevance spans endpoint and server software, cloud control planes, authentication, collaboration data, and the update mechanisms used to maintain them.
Security news under this tag commonly concerns vulnerabilities requiring patching, exploits against exposed services, identity or token compromise, and misconfiguration of cloud permissions or authentication policies. Practitioners should verify affected versions and exposure, apply updates or mitigations, enforce multifactor authentication and least privilege, and monitor relevant audit logs. Incidents involving Microsoft-hosted identities or data may require rapid session and credential containment, investigation across cloud and on-premises systems, and assessment of privacy or regulatory obligations.
Microsoft is working on adding a new Teams feature that will prevent users from capturing screenshots of sensitive information shared during meetings. [...]
The Play ransomware gang has exploited a high-severity Windows Common Log File System flaw in zero-day attacks to gain SYSTEM privileges and deploy malware on compromised systems. [...]
Microsoft says the April 2025 security updates are causing authentication issues on some Windows Server 2025 domain controllers. [...]
Microsoft is investigating a new Microsoft 365 outage affecting multiple services across North America, including the company's Teams collaboration platform. [...]
Today, Microsoft announced new Windows experiences for Copilot+ PCs, including AI agents that will make changing settings on your Windows computer easier. [...]
Microsoft has fixed a known issue preventing Windows 11 24H2 feature updates from being delivered via Windows Server Update Services (WSUS) after installing the April 2025 security updates. [...]
Microsoft warns about the security risks posed by default configurations in Kubernetes deployments, particularly those using out-of-the-box Helm charts, which could publicly expose sensitive data. [...]
The Skype video call and messaging service is shutting down today, 14 years after replacing Microsoft's Windows Live Messenger. [...]
Microsoft has silently fixed an issue that broke Start Menu jump lists for all apps on systems running Windows 10, version 22H2. [...]
Microsoft announced over the weekend that the Windows 11 24H2 update is ready to roll out to all compatible PCs, excluding those with safeguard holds. [...]