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.
Sophos found observed a significant rise in Microsoft LOLbins abused by attackers in H1 2024 compared to 2023
In this blog entry, we discuss a social engineering attack that tricked the victim into installing a remote access tool, triggering DarkGate malware activities and an attempted C&C connection.
Secret Blizzard Used Third-party Amadey Bots to Hack Ukrainian Military DevicesA Russian state-backed hacker group used third-party data-stealing bots and possibly a backdoor used by another Russia-based threat group to infiltrate and spy on devices used by frontline Ukrainian military units, according to a report from the Microsoft threat intelligence team.
Evidence Mounts for Chinese Hacking 'Quartermaster'A probable Chinese nation-state threat actor compromised Visual Studio Code and Microsoft Azure cloud infrastructure to target Western technology firms for espionage, security firms Tinexta Cyber and SentinelLabs said. The companies call the campaign "Operation Digital Eye."
A critical flaw in the company's rate limit for failed sign-in attempts allowed unauthorized access to a user account, including Outlook emails, OneDrive files, Teams chats, Azure Cloud, and more.
Microsoft has lifted a compatibility block preventing Windows 11 24H2 upgrades after fixing a bug causing USB connection issues to some scanners. [...]
The Russian nation-state actor tracked as Secret Blizzard has been observed leveraging malware associated with other threat actors to deploy a known backdoor called Kazuar on target devices located in Ukraine
Microsoft detailed how Russian espionage group Secret Blizzard is leveraging infrastructure of other threat actors to target the Ukrainian military with custom malware
A newly devised technique leverages a Windows accessibility framework called UI Automation (UIA) to perform a wide range of malicious activities without tipping off endpoint detection and response (EDR) solutions
Cybersecurity researchers have flagged a "critical" security vulnerability in Microsoft's multi-factor authentication (MFA) implementation that allows an attacker to trivially sidestep the protection and gain unauthorized access to a victim's account
Microsoft MFA flaw exposed that allowed attackers to bypass security within an hour, putting 400m Office 365 accounts at risk
Microsoft has patched dozens of vulnerabilities in December, including one zero-day being exploited in the wild
Microsoft closed out its Patch Tuesday updates for 2024 with fixes for a total of 72 security flaws spanning its software portfolio, including one that it said has been exploited in the wild
Microsoft today released updates to plug at least 70 security holes in Windows and Windows software, including one vulnerability that is already being exploited in active attacks. The zero-day seeing exploitation involves CVE-2024-49138, a security weakness in the Windows Common… Read More »
The zero-day (CVE-2024-49138), plus a worryingly critical unauthenticated RCE security vulnerability (CVE-2024-49112), are unwanted gifts for security admins this season.
Twas the night before Christmas, and all through the house, patching was done with the click of a mouse Microsoft hasn't added too much coal to the stocking this Patch Tuesday, with just 72 fixes, only one of which scored more than nine on the CVSS threat ranking scale.…
Microsoft has released the KB5048652 cumulative update for Windows 10 22H2, which contains six fixes, including a fix that prevented Windows 10 from activating when you change a device's motherboard. [...]
Today is Microsoft's December 2024 Patch Tuesday, which includes security updates for 71 flaws, including one actively exploited zero-day vulnerability. [...]
Microsoft has released the Windows 11 KB5048667 and KB5048685 cumulative updates for versions 24H2 and 23H2 to fix security vulnerabilities and issues. [...]
Copilot Enhancements and Other Key Announcements From Microsoft Ignite 2024Advanced AI took the center stage at Microsoft Ignite 2024. Reflecting on AI as the "most transformative technology of our time," CEO Satya Nadella set the tone for Microsoft's future where every facet of technology is integrated with AI in all key aspects - productivity, collaboration and security.