[German]Microsoft has introduced the so-called Checkpoint Cumulative Updates for Windows 11 24H2 and Windows Server 2025. In September 2024, there were probably first reports of problems, users failed with the error "Operation is not supported". Microsoft has now updated a support article that describes the procedure for successfully installing .msu updates manually on systems with this error.
[German]A little tip for people who may need to document BIOS settings for Lenovo devices. Lenovo offers a BIOS simulator that allows you to retrieve all settings via the Internet and document them with a screenshot.
[German]Email security for Security Operations Center (SOC) teams. What is hidden behind terms such as DKIM, SPF and DMARC, which are used to secure email communication?
I wish this to all blog readers and, above all, good health and optimism in these times.
[German]A small addendum from the weekend – at the 38C3 congress of the Chaos Computer Club, Thomas Lambertz, a security expert, showed how Microsoft's Bitlocker encryption can be circumvented by "downgrading" a patched vulnerability. The way in which secret services or law enforcement agencies can gain access to encrypted data.
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[German]Blog reader Fabian D. accidentally discovered a Privilege Escalation vulnerability in the G Data Security Client at the beginning of April 2024 and was then able to prove a Privilege Escalation vulnerability in the G Data Management Server during targeted research. Both vulnerabilities were reported to G DATA and have been fixed with version 15.8.333 in December 2024.
[German]Small addendum to Exchange Online. Microsoft has released the preview for "Message Trance" in Exchange Online on December 16, 2024. The function should be activated for all tenants by the end of December 2024. Administrators will then be able to use message tracking in the Exchange Administration Center (EAC) in Exchange Online.
[German]A small note for administrators who use Microsoft's App-V technology. Microsoft wanted to withdraw from App-V in April 2026, but has announced that it will continue to support the product in Windows clients and servers. The information must have been published by Microsoft in November 2024. Here is a rough overview of what I read from the announcements.
[German]Small addendum from 27.12.2024. Microsoft was forced to change the download addresses for .NET, PowerShell scripts and Win32 applications at this time. The background to this is the insolvency of Edgio (Limelight Networks).
[German]The US cyber security authority CISA has added further entries to its vulnerability catalog. It warns of the Adobe ColdFusion vulnerability CVE-2024-20767, the Windows kernel vulnerability CVE-2024-35250 and vulnerabilities in the Cleo software. The vulnerabilities are known to be exploited.
MVP:
2013 – 2016
WIMVP:
2017 – 2020
