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.
On Friday, Microsoft reminded customers once again that Windows 10 will reach its end of support in 30 days, on October 14. [...]
Although it hasn't been seen in the wild yet A new ransomware strain dubbed HybridPetya was able to exploit a patched vulnerability to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot on unrevoked Windows systems, making it the fourth publicly known bootkit capable of punching through the feature and hijacking a PC before the operating system loads.…
Microsoft has reminded customers today that devices running Home and Pro editions of Windows 11 23H2 will stop receiving updates in November. [...]
Lawmaker Says Microsoft Lapses Led to Ascension Health's Major 2024 HackSen. Ron Wyden, D-Oregon, is urging the Federal Trade Commission to investigate Microsoft over the software giant's alleged "negligent cybersecurity," which he says contributed to ransomware attacks on critical infrastructure sector organizations, including last year's attack on Ascension Health.
Persistent Security's Marcus Vervier on Microsoft Flaws, Pitfalls of AI CodingA newly discovered vulnerability present in Microsoft's Copilot and Visual Studio has brought a fresh batch of concerns around the security of artificial intelligence-powered coding tools to the forefront. It has the potential to turn AI models into a new attack vector.
Microsoft is working to resolve an ongoing Exchange Online outage affecting customers throughout North America, blocking their access to emails. [...]
Okta uncovers new phishing-as-a-service operation with 'multiple entities' falling victim Multiple attackers using a new phishing service dubbed VoidProxy to target organizations' Microsoft and Google accounts have successfully stolen users' credentials, multi-factor authentication codes, and session tokens in real time, according to security researchers.…
U.S. Senator Ron Wyden has sent a letter to the Federal Trade Commission (FTC) requesting the agency to investigate Microsoft for failing to provide adequate security in its products, which led to ransomware attacks against healthcare organizations. [...]
Microsoft Teams will automatically alert users when they send or receive a private message containing links that are tagged as malicious. [...]
Senator Ron Wyden of Oregon has urged the FTC to investigate Microsoft for cybersecurity lapses linked to ransomware attacks on US critical infrastructure
U.S. Senator Ron Wyden has called on the Federal Trade Commission (FTC) to probe Microsoft and hold it responsible for what he called "gross cybersecurity negligence" that enabled ransomware attacks on U.S. critical infrastructure, including against healthcare networks
Ron Wyden urges FTC to probe failure to secure Windows after attackers used Kerberoasting to cripple Ascension Microsoft is back in the firing line after US Senator Ron Wyden accused Redmond of shipping "dangerous, insecure software" that helped cybercrooks cripple one of America's largest hospital networks.…
Microsoft announced that, starting today, individual Windows developers will no longer have to pay for publishing their applications on the Microsoft Store. [...]
Cybersecurity researchers have discovered two new malware families, including a modular Apple macOS backdoor called CHILLYHELL and a Go-based remote access trojan (RAT) named ZynorRAT that can target both Windows and Linux systems
Microsoft has resolved severe lag and stuttering issues with streaming software affecting Windows 10 and Windows 11 systems after installing the August 2025 security updates. [...]
Microsoft has fixed a known issue caused by the August 2025 security updates, which triggers unexpected User Account Control (UAC) prompts and app installation problems for non-admin users on all Windows versions. [...]
Microsoft on Tuesday addressed a set of 80 security flaws in its software, including one vulnerability that has been disclosed as publicly known at the time of release
Microsoft has fixed over 80 vulnerabilities including two publicly disclosed zero-days in its latest Patch Tuesday release
ERP giant patches flaw that allows total takeover of NetWeaver, Microsoft has nothing under attack for once September’s Patch Tuesday won’t require Microsoft users to rapidly repair rancid software, but SAP users need to move fast to address extremely dangerous bugs.…
Microsoft Corp. today issued security updates to fix more than 80 vulnerabilities in its Windows operating systems and software. There are no known "zero-day" or actively exploited vulnerabilities in this month's bundle from Redmond, which nevertheless includes patches for 13 flaws that earned Microsoft's most-dire "critical" label. Meanwhile, both Apple and Google recently released updates to fix zero-day bugs in their devices.