Simplifying Cybersecurity

Guilherme Alves

Behind Security Maintainer, Pentester & Developer

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I'm a cybersecurity enthusiast, professional Python developer and certified pentester.

I have years of experience in cybersecurity, specifically in red teaming and ethical hacking. A follower of the “tryharder” mentality, I am always seeking knowledge and personal and professional development.

Whether you’re looking for a professional Python developer to build your next project or a pentester to secure your systems, I have the skills and experience to deliver the results you expect. My services are designed to help you achieve your goals while keeping your systems safe and secure.

Please feel free to get in touch. I’m always happy to discuss your needs and provide customized solutions that are right for you.

What I do

Software Development

With my Python experience, I can build data-driven solutions and automate business processes using scripts. My development services are tailored to meet the unique needs of each client, and I work closely with them to ensure that their requirements are met.

Penetration Tests

In addition to development, I also offer penetration testing services to help businesses identify vulnerabilities and prepare against cyber attacks. I use the latest tools and techniques to identify potential threats, and provide detailed reports on how to mitigate such threats.


My life is a perfect balance between building and breaking things in the software development world. While I indulge in projects that make me sweat, I also have a serious love affair with mind-blowing challenges, known as CTFs. Whether it's building lines of code or breaking systems to understand their vulnerabilities, I'm always alternating between being the development hero and the CTF villain. Because, after all, nothing beats the thrill of building something amazing and then trying to break it just to see if I can!


I'm an active enthusiast in cybersecurity competitions (CTFs). I often find myself spending hours on end in these challenging experiences, seeking to enhance my skills. Through this habit, I stay updated on the latest CVEs and learn new techniques, demonstrating my constant commitment to excellence in the field. It's an exciting journey, and I'm always ready for the next challenges. If you share this enthusiasm for the audacious side of technology, I invite you to join me on this journey.


Computer Networking
Teamwork & Communication





I've reached the highest level on the renowned international platform TryHackMe, and I'm currently in the top 20 in Brazil.



eJPT Certification

I obtained a 95% pass rate in the eJPT exam, an international certification that covers methodologies for analyzing and auditing hosts, networks, and pentesting web applications.


EDB-ID 50963

Exploit Author

I am the author of the code published and verified by several sources, used to exploit a critical vulnerability in the phpIPAM software (version 1.4.5).



CTF Evo 2021 Winner

I was one of the winners of the 2021 edition of the CTF Evo event run by HackerSec, a leading cybersecurity company in Brazil.

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