I'm Cassim, known as Aituglo online. Full-time bug bounty hunter based in Paris, specialized in access control and business logic vulnerabilities. Currently ranked in the top 30 on YesWeHack, with published CVEs on real-world systems.
I started hacking at 14 on platforms like Root-Me and HackTheBox. Before going all-in on security, I spent years as a developer, building web apps, exploring frameworks, shipping projects. That background is what makes me good at breaking things: I know how they're built.
I've always been someone who digs deep. When a subject catches my attention, I go all the way in until I understand how it really works. Security, cryptography, AI, running, nutrition, whatever it is. I get obsessed, I learn, and then I want to share what I found.
Before settling in Paris, I spent a few years as a digital nomad. I've lived and worked from a lot of countries, met people everywhere, and that shaped how I see things. I love discovering new places, new people, new problems to solve.
Today I split my time between hunting vulnerabilities on private and public programs, and building Meetly, a social running app to find running partners and progress together. I'm the first user of my own product. I also run ultra-trails. I finished the Ecotrail de Paris, 80km through the night.
The blog
This blog is my weekly journal. I write about bug bounty, AI, building things solo, and whatever I'm exploring at the moment. If that sounds like your kind of reading, subscribe and I'll send you the next one.