Introduction to My TILs

Far from what I once knew, I feel that today I have the basics to take seriously what I really enjoy. A while back, I got my eLearnSecurity eWPT certification, dabbled in WiFi hacking and pentesting in general, but I was absent for a long time. Why? University consumed all my time: I got into web development, Windows Forms applications with C#, .NET, Java, even a native Android mobile app I made for a company alongside my colleague Rodrigo (sending you a shout-out, handsome, love you lots <3). I said I’d start on Monday and it’s already Tuesday. Anyway, a lot has happened since then. This space will be my learning journal, with content that varies depending on how saturated I get with a topic or what I need along the way.

Let me introduce myself: I’m Jose, better known as Walxom (though almost nobody knows me). I started when I was in high school. My first serious experience with the command line was at 14 or 15 years old: while attempting a dual boot, I completely wiped my Windows partition. That experience forced me to learn how to navigate the Ubuntu terminal (shell: bash). I learned basic commands like ls, cd, pwd, rm, chmod, etc. For every mistake, StackOverflow was my salvation. My first hacking tool was Nmap: I wanted to know what devices were connected to the WiFi, and by the MAC addresses, I could identify the device brand. That’s how I figured out who was who, and from there came a bunch of “mischief” I’d get into. I kept learning more and more. By that time, I already had some familiarity with what could be called “hacking”… and not the ethical kind, HAHAHA.

Maybe later I’ll share more of my story, but that’s not what’s important right now. I just wanted to introduce myself and explain what this TIL (Today I Learned) section is about. Here I’ll comment on things I discover, without limiting myself to a single type of content, though almost everything will revolve around technology. I like to research a bit of everything; I know “jack of all trades, master of none,” but we’ll see what ends up carrying more weight. My experience leans more toward pentesting and Red Teaming. My first serious contact with this was in 2021 with HackTheBox. Since then, I’ve been hooked on vulnerable machines: sometimes they’re a headache, but they force you to research and build a solid methodology.

Why am I coming back now? My courses will get more relaxed, and I want to prioritize something I believe could be very useful in the future, following the approach I was already taking: Red Teaming with AI. I won’t neglect university, I’ll just stop putting so much effort into projects that don’t contribute to my growth. This 2026, I want to master that field.

As you can see, the format isn’t formal. I want to write like this: natural, with mistakes, contradictions, and things I might not explain perfectly. That’s the point: something more realistic and relatable to whoever reads it. Right now, I’m not looking for perfection; I’ll learn from my mistakes. As they say, only the one above is perfect.

If this format brings you something, great. I appreciate both criticism and support. Any comment or correction is valued because it helps me improve. See you in the next TIL: this was just the introduction.

PS: Just because it’s called “Today I Learned” doesn’t mean I’ll post daily. Some days I’ll be more active, and others I’ll almost disappear. The idea is to keep it alive, not turn it into an empty obligation.