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.
A ransomware operation targets Windows system administrators by taking out Google ads to promote fake download sites for Putty and WinSCP. [...]
Starting in July, Microsoft will begin gradually enforcing multi-factor authentication (MFA) for all users signing into Azure to administer resources. [...]
Microsoft has shared a temporary fix for a known issue preventing Microsoft 365 customers from replying to encrypted emails using the Outlook Desktop client. [...]
Microsoft has acknowledged a new known issue causing this month's KB5037765 security update for Windows Server 2019 to fail to install with 0x800f0982 errors. [...]
Financially motivated cybercriminals abuse the Windows Quick Assist feature in social engineering attacks to deploy Black Basta ransomware payloads on victims' networks. [...]
Today, Microsoft fixed a known issue breaking VPN connections across client and server platforms after installing the April 2024 Windows security updates. [...]
Microsoft has fixed a known issue causing NTLM authentication failures and domain controller reboots after installing last month's Windows Server security updates. [...]
Microsoft has fixed a zero-day vulnerability exploited in attacks to deliver QakBot and other malware payloads on vulnerable Windows systems. [...]
Microsoft has released the KB5037768 cumulative update for Windows 10 21H2 and Windows 10 22H2 with twenty changes, including account notifications in the Start Menu and Widgets on the lock screen. [...]
Today is Microsoft's May 2024 Patch Tuesday, which includes security updates for 61 flaws and three actively exploited or publicly disclosed zero days. [...]
Microsoft is rolling out the KB5037771 cumulative update for Windows 11 23H3 with thirty bug fixes and changes, including a fix for a bug breaking VPN connections. [...]