DKE

ByStefan Karg 15.09.202325.08.2025

This morning I’m on the way to Frankfurt for ICS – Informatik Consulting Systems participating at a DKE security working group meeting regarding standardisation of railway security.

OT

OT security testing
ByStefan Karg 21.07.202225.08.2025

This was my start into the new week this morning! 🌞🚴 This week I’m at one of our customers laboratories. Certain tests with OT components require physical presence and can’t be done remotely – which is a difference to a lot of IT environments.

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Security

USB Killer redefined
ByStefan Karg 30.03.202325.08.2025

A Military-Type Explosive Sent Via USB Drive (gbhackers.com) ⚡ So far, USB-Killer devices were used by attackers (or pentesters) to disable or destroy devices with USB interfaces by discharging a high power electrical shock into the data lines of the USB port. ❗ If you find a USB stick somewhere: Do not plug it into…

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AI

Bing AI message limitation
ByStefan Karg 17.02.202325.08.2025

There was an interesting article published about Bing’s AI chat bot using a LLM (Large Language Model) this weekend in the New York Times. A clear recommendation for reading:Why a Conversation With Bing’s Chatbot Left Me Deeply Unsettled – The New York Times

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Rail technology | Security

How railway cyber security works in a nutshell
ByStefan Karg 10.08.202325.08.2025

Step 1: Plan Security Management: This is the first step in the process, indicating the importance of planning and managing security measures effectively. Step 2: Security Risk Analysis (IEC 62443-3-2): The second step involves conducting a security risk analysis in accordance with the IEC 62443-3-2 standard. This step is crucial for identifying potential security risks…

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Security

Is your Android phone up-to-date?
ByStefan Karg 23.06.202325.08.2025

💡 Tip for the weekend: Does your Android phone have the latest updates installed?

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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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