Jesus Castello

It seems like the "language wars" are mostly over & now we're in the "LLM wars" era. However, if you still enjoy programming choice of programming language still matters. Ruby is still amazing, even if it's not the fastest, even if it doesn't have the most tooling or libraries.

Don't be fooled, LLMs don't think, they don't reason, they just perform calculations to find out which is the most likely next word. They make stuff up all the time. Stop idolizing them & never stop learning. rubyguides.com/ruby-post-inde…

Vibecode all you want but what's the point if you never understand what you're really doing? How are you going to avoid security issues & fix the real issues when the LLM fails you? Even in this AI era it's crucial to keep learning. Check out my blog: rubyguides.com/ruby-post-inde…

Hey! So I haven't been active lately because I got discouraged from making new content because of AI. However rubyguides.com is still alive & well, please check it out & consider supporting my work by buying a copy of my ebook & booking some private lessons. Thanks!

@yhbryankimiq Sir, you're a clown. 🤡

Bull run started. Next 11 hours.

@Jaxweah @grok 😎

@indicatorfn $125

@vxunderground @TurvSec I would like a HackTheBox giftcard :)

Giveaway. @TurvSec is sponsoring HackTheBox Academy giftcards. I've got 5 giftcards worth $50. If you'd like a $50 giftcard for HackTheBox to do stuff, leave a comment below. Winners will be selected in 24 hours.

@vxunderground @Level_Effect I would like to join the giveway :)

Giveaway. @Level_Effect has gifted us 5 x SOC Analyst Tier 3 Bundles > Takes you literally from how Windows boots up, to Tier 2-3+ levels of triage, remediation, and prevention. > Includes Virtual SOC training handling tickets in a case management platform. > Courses have vouchers to their exams including CDCP cert which is a 1 week practical, no multiple choice, report-deliverable certification exam that is manually graded Leave a comment below for a chance to win. Winner will be selected in 24 hours. Course information: training.leveleffect.com/bundles/30f253…

@vxunderground @Octoberfest73 I'm interested :)

Giveaway. @Octoberfest73 has sponsored two Zero Point Security "BOF Development & Tradecraft" courses. tl;dr Training course on Cobalt Strike and malware C2 stuff. Leave a comment below for a chance to win. Course information: zeropointsecurity.co.uk/course/bof-dev

@vxunderground Oooh. I'm interested in MalDevAcademy & the cat picture :)

More giveaway coming up: - Books - TryHackMe 3 month - MalDevAcademy x5 - Stickers - SEC+ or SCCP x3 - One (1) cat picture - ??? - Cobalt Strike BoF course - ??? - AMD virtual hardware thingie, idk

Have you used pattern matching in Ruby before❓ If you haven't make sure ti read this RubyGuides article right now: 📖rubyguides.com/2023/11/ruby-p…

Have you ever been curious about functional programming? Read my new article here: rubyguides.com/2025/02/haskel… (I actually wrote this last year but just got around to editing & publishing it 😅)

New Article: "The Elements of Ruby" rubyguides.com/2025/02/the-el…

@malenchi_alex Install Linux :)

Just bought my first Mac ever 🥳 What to do first ?

@coldhorizon Hola! Todo está bien, me cansé de crear contenido después de tantos años.

@matugm hombre, hace un tiempo que te perdí la pista, con eso del covid pensé que te habían hecho el llamado

Just updated: rubyguides.com/2015/07/ruby-t…

From Complexity To Clarity: Mastering Ruby’s Pattern Matching Features Link: rubyguides.com/2023/11/ruby-p…

The Ultimate Guide to Blocks, Procs & Lambdas rubyguides.com/2016/02/ruby-p… via @matugm

How to Use Ruby Time & Date Classes rubyguides.com/2015/12/ruby-t… via @matugm