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.
Windows 10 users are reportedly being blocked from accessing their desktops by full-screen trial offers for the Microsoft 365 productivity suite (formerly Office 365). [...]
Security researchers warn that hackers may start using Microsoft Visual Studio Tools for Office (VSTO) more often as method to achieve persistence and execute code on a target machine via malicious Office add-ins. [...]
Microsoft says the KB5021751 update is respecting users' privacy while scanning for and identifying the number of customers running Office versions that are outdated or approaching their end of support. [...]
A threat actor named InTheBox is promoting on Russian cybercrime forums an inventory of 1,894 web injects (overlays of phishing windows) for stealing credentials and sensitive data from banking, cryptocurrency exchange, and e-commerce apps [...]
A relatively new ransomware operation known as Nevada seems to grow its capabilities quickly as security researchers noticed improved functionality for the locker targeting Windows and VMware ESXi systems. [...]
Marking an end to an era, Microsoft is no longer directly selling Windows 10 product keys on their website, instead redirecting users to Windows 11 product pages. [...]
Microsoft has released out-of-band (OOB) updates for some .NET Framework and .NET versions to address XPS display issues triggered by December 2022 cumulative security updates. [...]
Microsoft revealed today that its security teams are tracking more than 100 threat actors deploying ransomware during attacks. [...]
Microsoft Edge is getting a new "split screen" feature that lets you view two websites in one window by allowing you to split tabs across the screen. [...]
Microsoft has disabled multiple fraudulent, verified Microsoft Partner Network accounts for creating malicious OAuth applications that breached organizations' cloud environments to steal email. [...]
Microsoft announced today that it added device isolation support via Microsoft Defender for Endpoint (MDE) on onboarded Linux devices. [...]