What fine-tuning a language model is, how Unsloth AI came about, what makes it different from Axolotl, TRL and LLaMA-Factory, and when it is worth using. With the numbers on VRAM and speed, the founders’ story, and a practical example.
Read the article →What is really inside a language model, why it works on numbers and not on meaning, how transformers are structured, and what distinguishes a model from an agent. From the perceptron to today, and the limits that no demo shows.
Read the article →Not a list of courses, but the order in which things are learned: the technical foundations, reading other people’s code, the first laboratory, and the three things almost everyone gets wrong at first. With what really matters, and what is only noise.
Read the article →From cables to applications, in four layers and without shortcuts. Why the stack is layered and what that really means, how a packet crosses ten routers, what sets TCP apart from UDP, and the MTU and port numbers that explain half of all network problems.
Read the article →Nmap, Metasploit Framework, sqlmap, ZAP, hashcat: what they really cover and where they do not. Why the free version is preferable in at least six cases out of seven, and the three cases where it is not. Including the mistake to avoid, which is to stop treating them as a black box.
Read the article →The word hacker never means what the press wants it to mean. The definition in the Jargon File and in RFC 1392, why cracker is a pathology semantically before it is legally, what a lamer is, and the three philosophies competing for the scene. With the rule that actually tells them apart.
Read the article →An operational vademecum for anyone working in security: the order in which you look at a system, the things you always check, the ethical rules that are not negotiable, and the story of the greatest hackers with an explanation of why they were.
Read the article →A compromised Linux server is not fixed by reinstalling: first you work out how they got in, then you look for the rest. A method for finding infected files with nothing but the shell, the signals you must not ignore, and why the order of operations matters more than the tools.
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