[German]On April 13, 2021, Microsoft released a slew of security updates for Windows and other Microsoft products. In the context of a patchday recap, I would like to summarize some information about these updates.
[German]Adobe has updated Adobe Acrobat (Reader) DC to version 21.001.20149 for Windows and macOS on April 16, 2021. See the release notes for download addresses for the Windows and macOS installers. Two issues are fixed: FDF documents cannot be opened in the web app, and Acrobat and Reader generate incorrect signature data for elliptical curve signatures when the elliptical certificate is stored in the Windows certificate store. (via)
[German]After the (supply chain) malware attack on various Gigaset Android smartphones, WhatsApp access was blocked for many users. There is an option to have the access unlocked again. Since several people have asked whether it is safe to continue using the SIM card and WhatsApp with the phone number, I have compiled some information.
[German]Older models of Gigaset smartphones have been attacked by malware via the manufacturer's update servers from March 26, 2021 – and increasingly from April 1, 2021. The manufacturer, Gigaset, has issued the information Lösung Malware-Angriff Smartphones with instructions on how to clean up the malware infestation of its Android devices on April 8, 2021. However, according to previous feedback, this doesn't really work for many people. Now there is a revised guidance from Gigaset dated April 12, 2021 on how to clean up the devices. Hence, a brief update with the latest findings.
[German]As of April 15, 2021, Microsoft has released the Edge browser version 90.0.818.39. However, there is feedback from blog readers that error 0x800421F7 was reported during the update installation. Here is some information on the issue.
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[German]After the Chrome 90 release by Google, Microsoft has released the update to the Edge 90.0.818.39 on April 15, 2021. It is a new development branch with some new features, whereby the update which fixes various vulnerabilities that have already been fixed in Google Chrome. However, there are also new features. Here is some information about it.
[German]The security updates for Microsoft Exchange released on April 13, 2021 was installable without problems for most users. However, there were isolated reports of problems, which I briefly summarize here.
[German]Google has released Google Chrome 90.0.4430.72 on April 14, 2021. It is a new development branch with some new features. The browser should be updated promptly, as Google closes 37vulnerability. Here is a brief overview.
[German]Microsoft will only allow the more secure SHA-2 algorithm in its processes and services (including in TLS certificates, code signing and file hashing) from May 9, 2021. SHA-1 use will then no longer be possible.
[German]On April 13, 2021 (second Tuesday of the month, Microsoft Patchday), Microsoft has released several security-related updates for still supported Microsoft Office versions and other products. Here is an overview of the available updates.
MVP:
2013 – 2016
WIMVP:
2017 – 2020
