Brazil
Born and raised in Caxias do Sul, Rio Grande do Sul.
My name is Arthur Johann Wilmsen Witt. I am a 17-year-old student, developer and cybersecurity enthusiast from Caxias do Sul, Rio Grande do Sul, Brazil.
My Story
I was born and raised in Caxias do Sul, RS, where I live, study and work today.
Technology has been part of my life for as long as I can remember. My parents tell me that when I was still a baby, I already understood how to use the touchpad of a laptop and that moving my finger would move the cursor on the screen.
As I grew up, that curiosity only became stronger. One of the biggest turning points for me was receiving my first video game console, an Xbox One. That was when I realized what computing could create: complete worlds, characters, stories and experiences, all generated through electricity, logic and code. To me, that felt incredible.
Game Development
When I was around 12 years old, I watched a trailer for a game that fascinated me. I remember thinking that I wanted to create something like that myself.
Using my father's computer, I asked him to install software for game creation. At first, I chose Blender, but I soon felt that I was not progressing the way I wanted. I wanted something more focused on game development.
Some time later, I found an advertisement for a Java game development course and decided to try it. Java was difficult for a 12 or 13-year-old beginner, but it gave me my first real contact with programming logic.
Around the age of 13, I discovered Unity and started building my first real games. Even though I knew they were just simple hobby projects, I had a lot of fun creating them. That period helped me understand how much I enjoyed building things with technology.
Web Development
As I matured, I started thinking more seriously about my future. I wondered whether I should continue with game development or explore other areas of technology.
At around 14, I began studying HTML, CSS, JavaScript and SQL. Because I already had some experience with C# and Java, learning web development felt more natural.
During that time, I also talked with a friend who had been working with programming for several years. He explained different areas I could study, including cybersecurity. At first, cybersecurity did not immediately catch my attention, but that changed soon after.
Cybersecurity
During a school break, I found two online intensive courses: one about frontend development and another about offensive security. Since they happened in different weeks, I decided to attend both.
The frontend course did not excite me as much as I expected. But when I started the offensive security course, everything felt different. I saw terminals, exploits, technical terms I did not understand yet, and a completely new way of thinking about systems.
Instead of feeling discouraged, I became even more curious. I wanted to understand what was happening behind every command, every request, every vulnerability and every defense mechanism.
That curiosity led me into penetration testing, bug bounty, vulnerability research and web application security. It is still one of the areas I study the most today.
Artificial Intelligence
In 2024, I discovered another field that changed the way I looked at technology: artificial intelligence.
I became especially interested in how AI could be combined with cybersecurity. Instead of treating them as separate areas, I started thinking about how machine learning could help analyze information, classify risks, reduce false positives and support security decisions.
This interest became stronger when some friends and I decided to participate in a science fair in 2025. During my school break, I studied embeddings, BERT, machine learning and natural language processing so we could build a serious project.
FNDetector
In 2025, we developed FNDetector, a fake news detection system using BERT and our own research-based model.
The project gained national recognition and achieved third place in Computer Science at MostraTEC, one of the largest science and technology fairs in Latin America.
That experience showed me that technology could go beyond personal interest. It could become research, education and social impact.
Current Work
After FNDetector, I decided to continue building projects that combine cybersecurity, artificial intelligence and real-world impact.
One of my current projects is GUARDIAN AI, a system designed to help people identify and avoid digital scams. The idea is to use what I learned from previous AI projects and apply it to a problem that affects many people every day.
I am also developing Synex, an offensive security platform focused on reconnaissance, vulnerability validation and security automation, and VERA, a research project focused on reducing false positives in vulnerability detection.
Quick Facts
Born and raised in Caxias do Sul, Rio Grande do Sul.
My main language for cybersecurity tools, automation and AI.
Focused on offensive security, bug bounty and vulnerability research.
Interested in applying AI to security, research and social impact.
Focus Areas
I believe technology should not only solve technical problems, but also help people, improve security and create positive impact.
Whether I am building tools, studying cybersecurity or researching artificial intelligence, my goal is to keep learning, keep creating and contribute to safer digital environments.
Explore My Projects