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 says Windows 10 updates released since the start of the year are breaking Microsoft Connected Cache (MCC) node discovery on enterprise networks. [...]
Microsoft has fixed a known issue causing 0x80073cf2 errors when using the System Preparation (Sysprep) tool after installing November Windows 10 updates. [...]
Microsoft has fixed an issue that triggers erroneous Outlook security alerts when opening .ICS calendar files after installing the December 2023 Outlook Desktop security updates [...]
The U.S. Department of Homeland Security's Cyber Safety Review Board (CSRB) has released a scathing report on how Microsoft handled its 2023 Exchange Online attack, warning that the company needs to do better at securing data and be more truthful about how threat actors stole an Azure signing key. [...]
Microsoft Copilot is a powerful asset for companies, but with it comes an increased risk of data exposure. In this article, Varonis demonstrates prompt-hacking examples that can expose sensitive data. [...]
Microsoft has confirmed that some Outlook.com users are experiencing issues with emails being blocked and marked as spam when trying to email Gmail accounts. [...]