IT/Cybersec

Kali is a great learning tool for learning cybersecurity, especially the red-attacking side of it. For the longest time, I had trouble running the Kali VM on my rather old Thinkpad X1 Carbon, as the image consumes quite a few resources. There is a way to use most of Kali’s tools with little resource consumption: ssh into the image via your distro terminal. It turns out it’s quite easy to set this up in VirtualBox, as described in this article: ...

After spending days trying to optimise my setup and thinking about the perfect use of my current hardware and also trying to get rid of stuff I don’t use, I came to the conclusion I need more hardware. This is kinda concerning, considering the initial problem I had before all this was that I have too much stuff around. This might have been influenced by watching The Minimalists – Less is Now or John Hammond’s video for his one laptop setup for teaching cybersecurity. ...

Cryptography is as old as the desire of humans to communicate secretly. A famous example is that of the so-called Caesar cypher, named after Julius Caesar. He used to encrypt his correspondence by shifting the letters of the alphabet to the right or left an agreed-upon number of spaces. Cypher disc Image Credit: Cypher disc By Hubert Berberich (HubiB) – Own work, Public Domain, https://commons.wikimedia.org/w/index.php ...

Computers have a very particular way of communicating with each other. For example, before widespread computer networks and the internet, people shared files by “sneakernet”: wearing a comfortable pair of sneakers and putting the info on the storage media and travelling to the destination computer to copy the data. This is not a very effective way to share files, and large companies soon realised this was a huge market and started developing various network protocols. The problem was that many of these protocols were proprietary and incompatible with each other. ...