2FA phishing - Stefan Karg

Security

Password security
ByStefan Karg 10.03.202225.08.2025

What’s the state of your password security? Do you consider the length and complexity and don’t use the same password for multiple services? Post | LinkedIn

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AI

WormGPT and FraudGPT
ByStefan Karg 28.07.202325.08.2025

As with any new technology, the “other side” is trying to figure out how to use it to their advantage. The normal commercial versions of LLMs have barriers built in to prevent the creation of malware code or phishing mails, for example. If you remove these barriers, you get the output that we as security…

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Security

DDoS attacks
ByStefan Karg 03.02.202325.08.2025

The German Federal Office for Information Security (BSI) informs about a wave of DDoS attacks against websites of mainly airports as well as from the financial sector and the government, which happened last week. Post of BSI on LinkedIn

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Security

Christmas season
ByStefan Karg 20.12.202225.08.2025

Christmas season is here again! Like you, your “favorite” cyber criminals are also waiting to get their presents. Here are my 3 free security tips for you to spoil their fun this Christmas season: Have a wonderful time with your beloved ones and stay secure!

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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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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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