Tag Archives: Security

Cyber attacks on Citrix: City of Brandenburg and community Stahnsdorf offline

[German]Both the German city of Brandenburg an der Havel and the municipality of Stahnsdorf in the district of Potsdam-Mittelmark (Germany) have gone offline and turned off their IT systems a cyber attack and are working in emergency mode. Here too, … Continue reading

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Edge and its poor installer security

[German]Microsoft offers the new Chromium-based Edge Browser since a few days now. However, the security of the provided Windows installer is quite poor.

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Ransomware: Are Potsdam and Gedia Shitrix victims?

[German]Well, I haven't found a 'smoking gun', but it turns out that the cyber attacks of the city of Potsdam (Germany) and German automotive supplier Gedia were possible via the Shitrix vulnerability in the Citrix ADC (Netscaler).

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City of Potsdam (Germany) offline – IT Servers shutdown

[German]The city of Potsdam, located near Berlin/Germany, has shut down its servers. E-mails no longer reach the staff, ID cards can no longer be applied for, etc. The administration is virtually at hold. Addendum: Added information about Citrix ADC vulnerability.

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Citrix vulnerability: New updates and scanners for testing

[German]Citrix developers have now released further firmware updates to close the vulnerabilities reported before Christmas 2019. There is also a scanner to detect Citrix systems compromised via the CVE-2019-19781 vulnerability. And there is a critical vulnerability in Cisco Firepower.

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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 ...


German Automotive Supplier Gedia Ransomware Victim

[German]The automotive supplier Gedia has been infected with ransomware. As a result, the IT systems were shut down because the blackmailing Trojan also encrypted data.

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Microsoft Defender ATP Product Brief

Just a note for administrators in corporate environments who want to use or are interested in using the paid Microsoft Defender Advanced Threat Protection.

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Big Data Leak at German car rental Buchbinder

[German]There is another huge data leak to be report within the last 24 hours. A data leak has occurred at the German Buchbinder car rental company, where personal data of three million customers was stored on an open server.

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Microsoft Data Leak: 250 Mio. Call Center records left public

[German]There was a privacy incident at Microsoft last year. At the end of last year, Microsoft briefly disclosed call center data of almost 250 million customers via several unsecured cloud servers.

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Windows 7: ESU Activation in Enterprise Environment – Part 3

[German]In another blog post I would like to discuss the activation of ESU licenses for Windows 7 SP1/Windows Server 2008/R2 support renewal in enterprise environments. Microsoft doesn't offer a viable solution to this issue, but I have found a potentially … Continue reading

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