Windows, TPM, MEM, and Intune: Issues when changing the motherboard

Posted on 2021-12-15 by guenni

Windows[German]I'm posting a short piece of information here on the blog because this topic will probably affect more and more administrators of Windows 10/11 systems in the coming months and years. We are securing the systems more and more, among other things with TPM. But what happens if a mainboard becomes defective and has to be replaced? That can result in the device no longer being recognized for Azure Active Directory, Windows AutoPilot, etc.

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log4j FAQ and Repository

Posted on 2021-12-14 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]Since the weekend a vulnerability CVE-2021-44228 contained in the JAVA library log4j keeps the IT scene in suspense. The log4j library is extremely widespread and is used in many products. In addition, the vulnerability is extremely easy to exploit remotely and attacks have also been observed for about 2 weeks. In the blog post I try to pick up the most important questions/answers in a kind of FAQ or as a repository and link to further pages.

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Vendor Kronos/UKG victim of a ransomware attack, cloud service disruption for weeks

Posted on 2021-12-14 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]I had already seen it briefly on Twitter yesterday, the provider of software solutions "from the cloud" (accounting, workforce scheduling, time tracking, etc.), the company Kronos, has become a victim of a ransomware attack over the weekend (Dec. 11, 2021). UKG solutions using the "Kronos Private Cloud" have been unavailable since Dec. 11, 2021, due to this ransomware attack.

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Chrome 96.0.4664.110: Patches critical vulnerability used in the wild

Posted on 2021-12-14 by guenni

[German]Google has released an update to Google Chrome 96.0.4664.110 for Windows, Mac and Linux (and version 96.0.4664.104 for Android) as of December 13, 2021. It is a security update that closes a critical and exploited vulnerability. Here's a quick overview.

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iOS 15.2 released

Posted on 2021-12-14 by guenni

Apple has released the update to iOS 15.2 for compatible iPhones (from iPhone 6s) and iPads (from iPad Pro, iPad Air 2, iPad 5th Gen., iPad mini 4) on Dec. 13, 2021. Via the Apple page HT201222, one can access a list of fixes. But there is a caveat: The controversial nude photo filter for iMessage is now on board. Currently it can only be activated for iMessages. But what is much more serious is that it is now part of the system.

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Why ISL Online: Critical factors when choosing a remote desktop solution

[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...

VMware products threatened by log4j vulnerability CVE-2021-44228

Posted on 2021-12-14 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]The critical vulnerability CVE-2021-44228 in the JAVA library log4j, which became known a few days ago, threatens millions of software products. For many server products, users can do little. However, I would like to recommend a closer look to administrators of VMware products, because the manufacturer indicates some virtualization products as affected by the vulnerability.

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log4j vulnerability CVE-2021-44228: Patch your Minecraft

Posted on 2021-12-14 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]Users who use the Minecraft game, which belongs to Microsoft, urgently need to update its client, which is written in JAVA. The background is that the log4j vulnerability CVE-2021-44228 also makes Minecraft servers vulnerable via Minecraft clients. The developer of Minecraft, Mojang, already announced this in a blog post over the weekend.

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Mirai Botnet Moobot targets Hikvision camera systems

Posted on 2021-12-14 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]Security researchers from Fortinet warned as early as December 6, 2021 that the Mirai-based botnet Moobot attacks vulnerabilities in the web servers of Hikvision camera systems. All it takes is sending a crafted instruction to the web server to inject commands and compromise the whole thing. The systems are then abused by the botnet for DDoS attacks.

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Windows 11: Microsoft fixes NVMe SSD Performance Issue

Posted on 2021-12-13 by guenni

Windows[German]In Windows 11, there was a performance issue with certain NVMe SSDs. With certain random write operations, the throughput performance dropped up to 45% compared to Windows 10. The whole thing was discussed in forums on the Internet. After I picked up the whole thing on the blog, it also led to "not comprehensible" type discussions in the comments. Now, however, Microsoft seems to have addressed and fixed exactly this problem with one of the latest Windows 11 updates.

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Microsoft Vancouver leaking website credentials

Posted on 2021-12-13 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]CyberNews security researchers discovered a Desktop Services Store (DS_STORE) file left on a publicly accessible web server that belongs to Microsoft Vancouver. By analyzing the file, the investigations team was able to learn about the files hosted on the Microsoft Vancouver server, as well as several database dump files stored on the server. This flaw has been corrected, after CyberNews security researchers informed Microsoft.

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