Category: Security

2024

01

Feb

History of computer viruses

Unveiling the Evolution: A Historical Journey through Computer Viruses

Exploring the evolution of computer viruses from the 1970s to present times, where I discuss the continuous battle between ever-evolving cyber threats and advancing cybersecurity. From pioneering malware like Creeper and Brain to the widespread destruction caused by I Love You and SQL Slammer, each era demonstrates escalating sophistication and societal impact, emphasizing the need for proactive security measures, education, and global collaboration to combat and adapt to these persistent cyber threats.

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2023

23

May

Python virus for fun and profit

Can you write a self-replicating virus in python? I gave it a try.

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2022

26

Jan

CVE-2021-4034 – my PoC for PwnKit

I made a Proof of Concept exploit (two actually) for the new Polkit CVE posted yesterday. Find a description and code here.

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2021

01

Sep

Hacking for a job (or just for fun)

The cyber crime unit of the Danish police has put out a boot2root box to find relevant applicants for a job as web specialist.
I could not resit trying it out.

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21

Jun

Free world-wide Wifi for all IPhones (or how to trash the IPhone wifi settings)

What happens if you put a funky format string as SSID for your wifi AP? For IPhones it can have an unexpected outcome.

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04

Jun

Who shares private social security number online?!?!

Have you ever shared a picture of your Danish social security card (in Danish: sundhedskortet) online? Maybe with a finger across to cover the secret number?
Think you’re safe from identify theft? probably not!

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19

Mar

Try Hack Me – 100 days after

I started the endeavour into the world of online hacking training/games back in December. Now, 100 days later, I will give a short update.

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2020

04

Dec

Computer Security – for fun and profit

So I have been interested in computer security, hacking, cracking, preaking and everything around it since my early teenage years. It has mostly been for the fun of it and not something I would use for bad things. Back in the early days (mid-90es) security was just beginning to be a thing so defacing a […]

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01

Sep

OpenSSH logos

Official U2F/FIDO support in OpenSSH

U2F/FIDO2 support is now officially available in OpenSSH.

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2019

04

Nov

OpenSSH logos

OpenSSH support for U2F/FIDO2

Finally, you can use the your soloKey or other U2F key with openSSH. It is still very early support so you will have to do a bit of compiling yourself. Here’s how!

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