It is time to use the most secure operating system.


OpenBSD is a Unix-like operating system created by Theo de Raadt in 1995 as a fork of NetBSD. It runs on various platforms and focuses on reliability, security, correctness, and freedom. This is considered by many as the most secure OS out there, it had only two remote attack vulnerabilities…

Linux kernel development is done by mailing lists. You have just improved a piece of code or documentation. What now? In this post, I will show you how to submit a patch to the Linux kernel, as well as some tips I learned.


There are many ways one can contribute…

In this post, I will provide details about my first CVE. The vulnerability was discovered when I was on vacation and needed to update a piece of personal information in SUAP (Sistema Unificado de Administração Pública), a system used by several federal public institutions in Brazil.

Vulnerability: Stored XSS


Hello, everybody. I am Cristian. After a long time searching for the best blogging platform, I decided to start writing on Medium. This is my first post where I am going to introduce myself and present to you what this blog will be about.

Well, I am currently a Computer…

Cristian Henrique

Student at IFRN and information security researcher.

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