Microsoft software and cloud platforms underpin enterprise systems, so vulnerabilities and security advisories can affect identity, data, and operations.
Search across headline titles and summaries.
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.
It's the first known instance of malware that abuses the UIA framework and has enabled dozens of attacks against banks and crypto exchanges in Brazil.
Threat actors are piling on the zero-day vulnerabilities in SharePoint, including at least three Chinese nation-state cyberespionage groups.
Microsoft Sentinel Data Lake aims to provide inexpensive storage for large volumes of telemetry, while threat intelligence will be included with Defender XDR at no extra cost.
Hackers and cybercrime groups are part of a virtual feeding frenzy, after Microsoft's recent disclosure of new vulnerabilities in on-premises editions of SharePoint Server.
Malicious actors already have already pounced on the zero-day vulnerability, tracked as CVE-2025-53770, to compromise US government agencies and other businesses in ongoing and widespread attacks.