I almost can't believe it, but I am finally releasing my Gitbook about CTF and Hacking, which is a year in the making. It contains many tricks, explanations, and resources from my experience and research. I hope it becomes a valuable resource for everyone! book.jorianwoltjer.com//

Entropy is one of those formulas that many of us learn, swallow whole, and even use regularly without really understanding. (E.g., where does that “log” come from? Are there other possible formulas?) Yet there's an intuitive & almost inevitable way to arrive at this expression.

One of the realest advice to come out the show.

🎉 Join us in welcoming Alessandro to the #Doyensec team! 🎉

Pwning stuff with no internet and no power socket is real CTF experience™

Damn...

In the Pisa 🇮🇹 area this weekend? Stop by the Google Developer Group's #DevFestPisa 2025 to catch our Aleandro 's presentation - "Imparare la cybersecurity catturando bandiere" (Learn Cybersecurity by Capturing Flags 🚩). eventbrite.it/e/devfest-pisa… #Doyensec #AppSec #GDG #security

I satirized this idea a few years ago when ChatGPT first came out. The reason it's "cheating" is because unless you learn the facts and skills, technology will always be a crutch. Imagine not knowing how to multiply or add numbers or how to spell correctly. Imagine a physicist

Pro tip: if your washing machine stops flushing out the water, probably a sock is stuck in the filter 🤓

‼️ NON DIMENTICATE DI FARE LA PROCEDURA PER IL VOTO FUORISEDE PER I REFERENDUM DELL'8-9 GIUGNO ‼️ ‼️ LA DATA ULTIMA PER RICHIEDERLA È IL 4 MAGGIO ‼️ ‼️ CACATEMI MO CHE SENNÒ POI È TARDI ‼️

My team is hiring a talented Application Security Engineer, position is open to remote candidates worldwide🌎 Proven experience in identifying real-world vulnerabilities is required, and coding skills will be assessed during the interview process. job-boards.greenhouse.io/aptoslabs/jobs…

I've released a blog series about modern Linux kernel exploitation, where you can learn some advanced techniques used in real-world kernel exploits. Enjoy! r1ru.github.io/categories/lin…

those that dual boot have commitment issues

An introduction to Software Defined Radios. A thread for beginners on: 1. What a SDR is 2. What you can do with SDRs 3. How it plays a role in the security/hacking world 4. How it’s used in ham radio. 5. How to choose/buy one 6. Link to more reading material 0/21

me 🤜🤛 b0n0b0

Codean Labs' b0n0b0 and Doyensec's Aleandro discovered CVE-2025-32464, a heap-buffer overflow in HAProxy. Read our write-up here: codeanlabs.com/blog/research/…

At Codean Labs, our mission is to make the world more secure — and what better way than to secure fundamental open source projects? We identified CVE-2025-47934, a critical vulnerability in OpenPGP.js to spoof signatures, see github.com/openpgpjs/open… github.com/openpgpjs/open…