Security

What is an exploit?

ByStefan Karg 03.10.202225.08.2025

👩‍🎓 Learn another security term this Wednesday: What is an exploit?

Vulnerabilities

CVE-2024-3094: xz-utils backdoor
ByStefan Karg 30.03.202425.08.2025

The newly discovered xz-utils backdoor, which was published yesterday (NVD – CVE-2024-3094 (nist.gov)) also affects one of the Linux distributions most used by penetration testers: Kali Linux. ❗Make sure, that you are updating your Kali installations as fast as possible, especially when you updated them before in the time frame between 26.03.2024 and 29.03.2024. 💡For…

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Security

Two-factor authentication
ByStefan Karg 10.02.202225.08.2025

Start to annoy hackers today by using two-factor authentication (2FA)! Setting up 2-Step Verification (2SV) – NCSC.GOV.UK

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OT | Security | Standardization

Railway Security standards
ByStefan Karg 08.08.202425.08.2025

In this post, I delve into the most relevant standards that secure our railway systems. Using Europe and Germany as a case study for the local and national level of standards, the following infographics provides a comprehensive overview of the most relevant standards helping to increase security on the tracks. 📄 Download infographics as pdf:…

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Political | Security | Standardization

BSI & TÜV: Worrying Survey on Cybersecurity Among German Companies
ByStefan Karg 12.06.202512.06.2025

The German BSI (Federal Office for Information Security) and TÜV-Verband conducted a survey among German companies to assess the status of cybersecurity in the private sector. Some worrying results from my point of view are: 🌐 Link to the study: BSI – Presse – TÜV-Studie zur Cybersicherheit der deutschen Wirtschaft: Bedrohungslage steigt, Unternehmen wiegen sich…

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Vulnerabilities

CVE-2024-3094: Why the xz-utils backdoor is more than a technical issue
ByStefan Karg 02.04.202425.08.2025

Despite the Easter holidays, a lot of incredible work was done over the weekend by many researchers analysing the details of the xz-utils backdoor. Some examples are: As the situation unfolds, it is becoming clear that this was not just one of the most sophisticated technical (perhaps the most sophisticated) attempts to introduce a backdoor…

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AI

The German Chancellor in 8 Mile?
ByStefan Karg 28.02.202325.08.2025

Maximilian Hedrich – Post | LinkedIn An example of what AI already is able to deliver today. We will need to deal with the issue of authenticity of voice and video in a AI driven future in a different way, than we did up to now. It’s not a question of “Will this technology be…

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