Cyberattack on German airports, was Lufthansa disruption also a Killnet cyberattack?

Posted on 2023-02-17 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]On February 16, 2023 the websites of  several German airports were down due to DDoS attacks by suspected Russian cyber attackers. And this week Wednesday, after all, there was a Lufthansa IT outage that was originally attributed to fiber optic cable damage. Now the Russian hacker group Killnet is claiming the Lufthansa IT outage was the result of a cyberattack, as Germany supports Ukraine against Russian aggression. Hence, some cyber conspiracy theories to end the week.

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February 2023 Patchday: EWS problems after Exchange Server security update

Posted on 2023-02-17 by guenni

Exchange Logo[German]After the installation of the February 14, 2023 security updates, I got some reports from administrators that Exchange Web Services (EWS) is causing issues. For example, the calendar update isn't working. Uninstalling the security update solved the problem. Microsoft has confirmed the issues and provided a workaround. Therefore, a brief overview of the facts – perhaps administrators from the readership can say something about it.

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Windows 10/11 Mail app can Exchange ActiveSync

Posted on 2023-02-17 by guenni

Exchange Logo[German]Small addendum that Thomas B. already pointed out to me in Sept. 2022. It is about the possibility to access Exchange mailboxes with ActiveSync by means of the app delivered in Windows 10 and Windows 11.

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Microsoft's February 2023 Patchday: Incorrect updates in WSUS, Exchange and Windows

Posted on 2023-02-16 by guenni

Update[German]Microsoft has released a large number of security updates for Windows and Exchange on February 14, 2023. However, they made a mistake with some updates and simply delivered the wrong update packages via Windows Update, WSUS or the downloads. Some administrators did not get the updates for Windows Server 2022 and Windows 11 22H2 in WSUS. Other administrators had problems with Exchange because the wrong package was distributed. For Windows 7 the WSUS loads outdated updates. Here's a quick rundown of what went wrong.

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Thunderbird 102.8.0

Posted on 2023-02-16 by guenni

[German]The developers of Thunderbird have released another update of the email client to version 102.8.0 on February 15, 2023. It is a bug-fix update, which should fix some problems. Just updated the client on my end.
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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 ...

Windows Server 2022: February 2023 Patchday and the ESXi VM Secure Boot Issue

Posted on 2023-02-16 by guenni

Sicherheit (Pexels, allgemeine Nutzung)[German]The security update KB5022842 for Windows Server, released on February 14, 2023,  triggers collateral damage. Virtual machines can subsequently no longer start after a reboot and either can no longer find their system drives or trigger a Secure Boot error. Disabling Secure Boot helps – Microsoft and VMware have since confirmed this error.

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Patchday: Microsoft Office Updates (February 14, 2023)

Posted on 2023-02-16 by guenni

Update[German]On February 14, 2023 (second Tuesday of the month, Microsoft Patchday), Microsoft released several security-related updates for still-supported Microsoft Office versions and other products. A critical remote code execution vulnerability in Word is closed. Below is an overview of the available updates. Continue reading →

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Edge 110.0.1587.46

Posted on 2023-02-15 by guenni

EdgeMicrosoft has updated the Edge browser in the stable channel to version 110.0.1587.46 on February 14, 2023 (thanks to Robert for the tip). Microsoft did not reveal too much in the release notes for this maintenance update, only "Fixed various bugs and performance issues".

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Google Chrome version 110.0.5481.96/97/100

Posted on 2023-02-15 by guenni

ChromeSmall addendum, Google has already released updates of the Google Chrome browser 110 in the Stable Channel for Mac, Linux (110.0.5481.96) and Windows (110.0.5481.96/.97) until February 13, 2023 (see this entry in the Google blog). In the Extended Stable Channel, version 110.0.5481.96 is available for Windows and Mac. Then on 2/14/2023, version 10.0.5481.100 for Windows, Mac and Linux was pushed to the Stable Channel. Thanks to Robert for the hint.

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Firefox 110.0 and 102.8.0 esr

Posted on 2023-02-15 by guenni

Mozilla[German]The Mozilla developers have released the versions 110.0 and 102.8.0 ESR of the Firefox browser on February 14, 2023. The ESR versions are maintenance updates that are supposed to fix bugs. Firefox 110 is a new development branch. In both updates, vulnerabilities are fixed. Thanks to the reader for the tip.

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