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 that Windows 10 updates released in late September are causing Windows taskbar flicker issues and app instability. [...]
Microsoft announced today that a future Microsoft Edge update would permanently disable the Internet Explorer 11 desktop web browser on some Windows 10 systems in February. [...]
A new cross-platform malware botnet named 'MCCrash' is infecting Windows, Linux, and IoT devices to conduct distributed denial of service attacks on Minecraft servers. [...]
Microsoft has addressed a known issue that made parts of the Task Manager unreadable after installing the KB5020044 November preview update on Windows 11 22H2 systems. [...]
Microsoft has removed a compatibility hold after fixing lower-than-expected performance or stuttering in some games affecting some Windows 11, version 22H2 systems. [...]
Ukrainian government entities were hacked in targeted attacks after their networks were first compromised via trojanized ISO files posing as legitimate Windows 10 installers. [...]
QBot malware phishing campaigns have adopted a new distribution method using SVG files to perform HTML smuggling that locally creates a malicious installer for Windows. [...]
Microsoft has fixed a security vulnerability used by threat actors to circumvent the Windows SmartScreen security feature and deliver payloads in Magniber ransomware attacks. [...]
Multiple editions of Windows 10 21H1 have reached their end of service (EOS) on this month's Patch Tuesday, as Microsoft reminded customers yesterday. [...]
Microsoft has addressed an LSASS memory leak issue on some domain controllers that led to freezes and restarts after installing Windows Server updates released during last month's Patch Tuesday. [...]
Microsoft says Windows Server updates released during December's Patch Tuesday will trigger errors when trying to create new virtual machines on some Hyper-V hosts. [...]
Microsoft has revoked several Microsoft hardware developer accounts after drivers signed through their profiles were used in cyberattacks, including ransomware incidents. [...]
Microsoft has released the Windows 11 KB5021255 and KB5021234 cumulative updates for versions 22H2 and 21H2 to fix security vulnerabilities and resolve twenty-nine bugs and performance issues. [...]
Microsoft has released the Windows 10 KB5021233 and KB5021237 cumulative updates for versions 22H2, version 21H2, version 21H1, and 1809 to fix security vulnerabilities and resolve twenty bugs and performance issues. [...]
Today is Microsoft's December 2022 Patch Tuesday, and with it comes fixes for two zero-day vulnerabilities, including an actively exploited bug, and a total of 49 flaws. [...]
Microsoft is adding a built-in screen recorder to the Windows 11 Snipping Tool that will enable users to capture videos of their desktop without the need for a third-party app. [...]