About me

Hi, I'm Roberto, or 0xr3iko online. I'm an Offensive Security Engineer working out of the Dominican Republic.

My job is to break into corporate Windows networks before someone else does. I spend most of my time inside Active Directory, mapping how an attacker would actually get from a single foothold to full control of a domain, and then writing it all down so it can be fixed. When the tool I need doesn't exist, I write it in Python.

I've been doing this professionally for a couple of years now.

Certifications

• CRTE Certified Red Team Expert Altered Security
• CRTP Certified Red Team Professional Altered Security
• PNPT Practical Network Penetration Tester TCM Security
• CPTS Certified Penetration Testing Specialist Hack The Box
• CRTM Certified Red Team Master In progress

Why this blog

This is where I write down what I learn: notes, research, tutorials and practical guides that come out of real work rather than theory. It's aimed at anyone into offensive security, whether you're just getting started, still studying, or already doing this for a living.

I post in English and Spanish. The button in the navigation bar switches between them.