About Me

I'm Vasilis (a.k.a. Billy), a cybersecurity professional specializing in offensive security. I have studied Computer Science and Biomedical Informatics and I hold a Master's degree in Information and Communication System Security.

I work as a penetration tester, focusing on identifying and exploiting vulnerabilities in different web applications, mobile apps, networks and infrastructures. My role involves simulating real-world attacks to assess and improve the security of systems before they're targeted by malicious actors.

Outside of work, I actively engage in vulnerability research, having discovered and responsibly disclosed several security issues some of which have been assigned CVEs. I hold several industry certifications and continuously seek to improve my skills and expand my knowledge in the field of offensive security.