Ismail Melih Tas

Cybersecurity founder, researcher, and technical leader with deep expertise in offensive security, vulnerability intelligence, and security automation. Founder & CEO of VulnHero — delivering full-stack security posture management solutions that help organizations identify, prioritize, and respond to real-world threats. Founder & Managing Director of Siber Ninja — providing advanced penetration testing, red teaming, secure SDLC & DevSecOps transformation, and a unified security testing platform for global enterprises and public institutions. Recognized speaker at DEF CON, Black Hat, and global security communities. Creator of widely used security tools such as Mr.SIP and Mr.SIP Pro (https://mrsip.pro) for VoIP security testing. Based in London, UK — originally from Turkey — with a PhD in Computer Science and 20+ years of experience spanning financial services, telecommunications, and cybersecurity R&D. Based in London, UK — originally from Turkey — with a PhD background and 20+ years of experience in financial services, telecom, and cybersecurity R&D.