Jonathan spends his time breaking the systems enterprises trust most but understand least. Specializing in IBM z/OS and IBM i security, he researches privilege escalation, authorization flaws, and attack paths on platforms the industry forgot to threat-model. He runs a home lab with two AS/400s and enterprise gear to test these ideas in practice. His work applies modern offensive security methods to legacy platforms, showing how the path from a compromised account to mainframe domination may be far shorter than most defenders want to believe.
Email: jonathan.prince@nviso.eu