Tag: windows
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New PDFSider Windows malware deployed on Fortune 100 firm’s network
Ransomware attackers targeting a Fortune 100 company in the finance sector used a new malware strain, dubbed PDFSider, to deliver malicious payloads on Windows systems. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/new-pdfsider-windows-malware-deployed-on-fortune-100-firms-network/
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Microsoft Issues Emergency Fix After Some Windows 11 Systems Can’t Shut Down
The fix is for a bug that prevents some systems from shutting down, while another bug that prevents hibernation has no workaround yet. The post Microsoft Issues Emergency Fix After Some Windows 11 Systems Can’t Shut Down appeared first on TechRepublic. First seen on techrepublic.com Jump to article: www.techrepublic.com/article/news-windows-11-shutdown-bug/
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Windows 11 shutdown bug forces Microsoft into outband damage control
Ships emergency update to fix a Patch Tuesday misfire that prevented systems from switching off First seen on theregister.com Jump to article: www.theregister.com/2026/01/19/windows_11_shutdown_bug/
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Windows SMB Client Vulnerability Exposes Organizations to Full Active Directory Compromise
A severe vulnerability in Windows Server Message Block (SMB) client authentication hasemergedas a critical threat to Active Directory environments. CVE-2025-33073, a logical flaw in NTLM reflection handling, enables authenticated attackers to escalate to SYSTEM-level privileges and compromise domain controllers, potentially allowing them to take over entire Active Directory forests. Field Value CVE ID CVE-2025-33073 Vulnerability…
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Attackers Abuse WSL2 to Operate Undetected on Windows Systems
Windows Subsystem for Linux (WSL) has transformed the developer experience on Windows. However, it has also quietly created a powerful hiding place for attackers. With WSL2, Microsoft moved from lightweight translation to a whole virtual machine (VM) model. That architectural change gives adversaries a semi-isolated Linux environment running inside Hyper”‘V that is rarely monitored by…
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Autotype: Windows-11-Update macht beliebte Keepass-Funktion kaputt
Seit dem Januar-Patchday kann Keepass in einigen Windows-Dialogen keine Zugangsdaten mehr per Autotype einfügen. Ein Fix ist nicht zu erwarten. First seen on golem.de Jump to article: www.golem.de/news/autotype-windows-11-update-macht-beliebte-keepass-funktion-kaputt-2601-204337.html
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Notfall-Patch ist da: Microsoft patzt beim ersten Update 2026
Das Januar-Sicherheitsupdate für Windows 11 verursacht Probleme beim Herunterfahren und bei Remote-Verbindungen – nun ist Abhilfe da. First seen on golem.de Jump to article: www.golem.de/news/notfall-patch-ist-da-microsoft-patzt-beim-ersten-update-2026-2601-204319.html
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Nutzerbeschwerden: Windows-11-Update beschert Outlook-Nutzern nervige Fehler
Outlook Classic scheint sich bei Betroffenen ständig aufzuhängen und nicht mehr richtig schließen zu lassen. Eine Lösung ist noch nicht in Sicht. First seen on golem.de Jump to article: www.golem.de/news/nutzerbeschwerden-windows-11-update-beschert-outlook-nutzern-nervige-fehler-2601-204328.html
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NTLMv1: Veraltete Windows-Passwörter lassen sich in Stunden knacken
Eine Rainbow Table macht NTLMv1-Hashes zur leichten Beute. Windows-Admins müssen jetzt handeln, damit ihre Passwörter nicht geknackt werden. First seen on golem.de Jump to article: www.golem.de/news/ntlmv1-veraltete-windows-passwoerter-lassen-sich-in-stunden-knacken-2601-204318.html
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Microsoft January 2026 Security Update Triggers Credential Prompt Failures in Remote Desktop
Microsoft’s January 2026 security update has disrupted enterpriseRemote Desktopinfrastructure, triggering widespread credential prompt failures that prevent users from accessingAzure Virtual Desktopand Windows 365 environments. The problematic patch KB5074109, released January 13, 2026, introduced an authentication regression affecting Windows 11 versions 24H2 and 25H2 running builds 26100.7623 and 26200.7623. The issue manifests as immediate sign-in failures when…
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Microsoft January 2026 Security Update Triggers Credential Prompt Failures in Remote Desktop
Microsoft’s January 2026 security update has disrupted enterpriseRemote Desktopinfrastructure, triggering widespread credential prompt failures that prevent users from accessingAzure Virtual Desktopand Windows 365 environments. The problematic patch KB5074109, released January 13, 2026, introduced an authentication regression affecting Windows 11 versions 24H2 and 25H2 running builds 26100.7623 and 26200.7623. The issue manifests as immediate sign-in failures when…
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New Kerberos Relay Technique Exploits DNS CNAMEs to Bypass Existing Defenses
Tags: attack, authentication, credentials, cve, cyber, defense, dns, exploit, flaw, ntlm, service, threat, vulnerability, windowsA critical vulnerability in Windows Kerberos authentication that enables attackers to conduct credential-relay attacks by exploiting DNS CNAME records. Tracked as CVE-2026-20929, this flaw allows threat actors to force victims into requesting Kerberos service tickets for attacker-controlled systems, facilitating lateral movement and privilege escalation even when NTLM authentication is entirely disabled. CVE ID Vulnerability Name…
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Microsoft releases OOB Windows updates to fix shutdown, Cloud PC bugs
Microsoft has released multiple emergency, out-of-band updates for Windows 10, Windows 11, and Windows Server to fix two issues caused by the January Patch Tuesday updates. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/microsoft/microsoft-releases-oob-windows-updates-to-fix-shutdown-cloud-pc-bugs/
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Nach Januar-Patchday: Einige Windows-11-PCs lassen sich nicht mehr runterfahren
Tags: windowsStatt herunterzufahren oder in den Ruhezustand zu wechseln, starten betroffene Windows-11-PCs neu. Ein Fix ist in Arbeit und soll später kommen. First seen on golem.de Jump to article: www.golem.de/news/nach-januar-patchday-einige-windows-11-pcs-lassen-sich-nicht-mehr-runterfahren-2601-204268.html
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Microsoft’s January Security Update of High-Risk Vulnerability Notice for Multiple Products
Overview On January 14, NSFOCUS CERT detected that Microsoft released the January Security Update patch, which fixed 112 security issues involving widely used products such as Windows, Microsoft Office, Microsoft SQL Server, Azure, etc., including high-risk vulnerability types such as privilege escalation and remote code execution. Among the vulnerabilities fixed by Microsoft’s monthly update this…The…
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Some Windows PCs fail to shut down after January update
Microsoft has confirmed a new issue that prevents Windows 11 23H2 devices with System Guard Secure Launch enabled from shutting down. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/microsoft-some-windows-pcs-fail-to-shut-down-after-january-update/
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Azure Identity Token Flaw Exposes Windows Admin Center to Tenant-Wide Breaches
Cymulate Research Labs discovered a high-severity authentication bypass vulnerability in Microsoft Windows Admin Centre’s Azure AD Single Sign-On implementation that enables attackers with local administrator access on a single machine to compromise any other Windows Admin Center-managed system within the same Azure tenant. The flaw, tracked as CVE-2026-20965, stems from improper validation of Proof-of-Possession (PoP) tokens…
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Azure Identity Token Flaw Exposes Windows Admin Center to Tenant-Wide Breaches
Cymulate Research Labs discovered a high-severity authentication bypass vulnerability in Microsoft Windows Admin Centre’s Azure AD Single Sign-On implementation that enables attackers with local administrator access on a single machine to compromise any other Windows Admin Center-managed system within the same Azure tenant. The flaw, tracked as CVE-2026-20965, stems from improper validation of Proof-of-Possession (PoP) tokens…
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2025 Threat Landscape in Review: Lessons for Businesses Moving Into 2026
Tags: access, ai, application-security, attack, authentication, awareness, backdoor, breach, business, captcha, cloud, compliance, container, control, credentials, credit-card, cybersecurity, data, data-breach, ddos, defense, encryption, exploit, finance, firewall, flaw, google, identity, infrastructure, intelligence, leak, malicious, mitigation, monitoring, network, pypi, risk, service, software, strategy, supply-chain, threat, tool, vulnerability, windows2025 Threat Landscape in Review: Lessons for Businesses Moving Into 2026 andrew.gertz@t“¦ Thu, 01/15/2026 – 16:48 Nadav Avital – Senior Director of Threat Research at Thales More About This Author > 2025 was a year that tested how businesses think about security. Some attacks happened in new, unexpected ways, while others employed old tricks, taken…
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Januar-Patchday: Windows-Updates machen Remote-Anmeldung kaputt
Einige Anwender haben neuerdings Probleme, sich mit der Windows-App bei Azure Virtual Desktop oder Windows 365 anzumelden. Ein Fix ist in Arbeit. First seen on golem.de Jump to article: www.golem.de/news/januar-patchday-windows-updates-machen-windows-app-kaputt-2601-204213.html
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Januar-Patchday: Windows-Updates machen Remote-Anmeldung kaputt
Einige Anwender haben neuerdings Probleme, sich mit der Windows-App bei Azure Virtual Desktop oder Windows 365 anzumelden. Ein Fix ist in Arbeit. First seen on golem.de Jump to article: www.golem.de/news/januar-patchday-windows-updates-machen-windows-app-kaputt-2601-204213.html
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Januar-Patchday: Windows-Updates machen Remote-Anmeldung kaputt
Einige Anwender haben neuerdings Probleme, sich mit der Windows-App bei Azure Virtual Desktop oder Windows 365 anzumelden. Ein Fix ist in Arbeit. First seen on golem.de Jump to article: www.golem.de/news/januar-patchday-windows-updates-machen-windows-app-kaputt-2601-204213.html
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Januar-Patchday: Windows-Updates machen Windows-App kaputt
Einige Anwender haben neuerdings Probleme, sich mit der Windows-App bei Azure Virtual Desktop oder Windows 365 anzumelden. Ein Fix ist in Arbeit. First seen on golem.de Jump to article: www.golem.de/news/januar-patchday-windows-updates-machen-windows-app-kaputt-2601-204213.html
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Schlag gegen Cyberkriminelle in Deutschland
Tags: cybercrime, germany, infrastructure, Internet, mail, microsoft, phishing, software, usa, windowsInternationalen Ermittlern und Microsoft ist ein Schlag gegen die Infrastruktur des Cybercrime-Dienst RedVDS gelungen. Die Server standen auch in Deutschland.In einer konzertierten Aktion haben Strafverfolgungsbehörden in Deutschland, den USA und Großbritannien zusammen mit Microsoft den globalen Cyberkriminalitätsdienst RedVDS zerschlagen. Das bestätigten die Zentralstelle für Internet- und Computerkriminalität (ZIT) bei der Generalstaatsanwaltschaft in Frankfurt sowie das Landeskriminalamt…
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Sophisticated VoidLink malware framework targets Linux cloud servers
Cloud reconnaissance and adaptability: The malware was designed to detect whether it’s being executed on various cloud platforms such as AWS, GCP, Azure, Alibaba, and Tencent and then to start leveraging those vendors’ management APIs. The code suggests the developers plan to add detections for Huawei, DigitalOcean, and Vultr in the future.The malware collects extensive…
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Jetzt Updates einspielen: Windows-Nutzer werden attackiert
Mindestens eine zum Januar-Patchday geschlossene Windows-Lücke wird schon aktiv ausgenutzt. Nutzer sollten ihre Systeme zügig aktualisieren. First seen on golem.de Jump to article: www.golem.de/news/jetzt-updates-einspielen-windows-nutzer-werden-attackiert-2601-204160.html
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January 2026 Microsoft Patch Tuesday: Actively exploited zero day needs attention
More priorities: Executives should also prioritize rapid patching and risk reduction efforts this month around the Windows Local Security Authority Subsystem Service Remote Code Execution, Windows Graphics Component Elevation of Privilege, and Windows Virtualization Based Security Enclave Elevation of Privilege flaws, Bicer said, as these vulnerabilities directly enable full system or trust boundary compromise.Strategic focus…
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Windows info-disclosure 0-day bug gets a fix as CISA sounds alarm
First Patch Tuesday of 2026 goes big First seen on theregister.com Jump to article: www.theregister.com/2026/01/14/patch_tuesday_january_2026/
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Developer writes script to throw AI out of Windows
Satya Nadella’s call to accept and embrace desktop brainboxes faces skepticism First seen on theregister.com Jump to article: www.theregister.com/2026/01/13/script_removes_ai_from_windows/
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Microsoft January 2026 Patch Tuesday: 115 Vulnerabilities Fixed
Microsoft kicks off 2026 with 115 security updates, including a fix for an actively exploited zero-day. Protect your Windows and Office systems today. First seen on hackread.com Jump to article: hackread.com/microsoft-january-2026-patch-tuesday-vulnerabilities/