Category Archives: Security

Log4j-News (2021/12/18)

Posted on 2021-12-18 by guenni

[German]The log4j vulnerability CVE-2021-44228 keeps sending shockwaves through the IT scene. Latest reports say that a majority of companies have not patched the vulnerability in their software. In addition, a new DoS vulnerability has been found in the library, for … Continue reading →

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Sennheiser discloses customer data via old cloud instance

Posted on 2021-12-18 by guenni

[German]Audio gigant Sennheiser was victim of a data protection incident. Sennheiser (audio technology left an old cloud account unprotected on the Internet so that third parties could access customer data. Security researcher found the open Amazon AWS S3-Bitbucket and informed … Continue reading →

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Insides on Ireland's health service executive ransomware case in May 2021

Posted on 2021-12-17 by guenni

[German]In May 2021, there was a ransomware attack on Ireland's Health Service Executive (HSE). PricewaterhouseCoopers recently provided an analysis of what went wrong. Below I briefly compiled the findings of the investigation from that case.

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Update fixes Windows AppX installer 0-day vulnerability CVE-2021-43890 (used by Emotet)

Posted on 2021-12-16 by guenni

[German]Another addendum from the December 2021 patchday regarding the AppX installer used in Windows. Microsoft has closed the Windows AppX Installer spoofing vulnerability CVE-2021-43890 with an update. The Emotet gang has been trying to exploit this vulnerability to infect systems … Continue reading →

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Frequent login attempts on routers (FRITZ!Box)

Posted on 2021-12-16 by guenni

[German]Currently, owners of Internet routers – especially FRITZ!Box routers – are noticing recurring login attempts on their devices. At least, some readers have contacted heise with corresponding observations. And also during a short research I came across postings reporting access … Continue reading →

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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 ...

Patchday: Windows 11 Updates (December 14, 2021)

Posted on 2021-12-15 by guenni

[German]On December 14, 2021 (second Tuesday of the month, Patchday at Microsoft), Microsoft has also released a cumulative update for Windows 11, which was released on October 5, 2021. The update is supposed to fix various issues. Here are some … Continue reading →

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Patchday: Updates für Windows 7/Server 2008 R2 (Dezember 14, 2021)

Posted on 2021-12-15 by guenni

[German]On December 14, Microsoft has released various updates for Windows 7 SP1 systems that are still in ESU support. Also with ESU Bypass v11 the whole thing still works. But these security updates are also available for Windows Server 2008 … Continue reading →

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Patchday: Windows 8.1/Server 2012-Updates (December 14, 2021)

Posted on 2021-12-15 by guenni

[German]On December 14, Microsoft released various updates for Windows 8.1. However, these security updates are also available for Windows Server 2012 R2. Here is some information on the Monthly Rollup and Security only updates for these operating systems.

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Patchday: Microsoft Office December 2021 updates (14.12.2021) causes Access issues

Posted on 2021-12-15 by guenni

[German]On December 14, 2021 (second Tuesday of the month, Microsoft Patchday), Microsoft has released several security-related updates for still supported Microsoft Office versions and other products. An RCE vulnerability in Excel is closed again. For Microsoft Access, however, an update … Continue reading →

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Patchday: Windows 10 Updates (December 14, 2021)

Posted on 2021-12-15 by guenni

[German]On December 14, 2021 (second Tuesday of the month, Patchday at Microsoft), various cumulative updates for the supported Windows 10 builds (from RTM version to the current version) were released. Here are some details about each of the Patchday security … Continue reading →

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