Achilleas Konstantzos is the CTO of CYGNUS Technologies, where he leads the company’s Cyber Operations and R&D departments, spanning SOC operations, red teaming, adversary emulation and security research. A lifelong technology enthusiast, he studied at the University of Piraeus and later specialized in Information Systems Security at the Athens University of Economics and Business. For more than a decade, he has worked on securing complex operational environments and critical infrastructure for leading Greek and multinational organizations across sectors such as commerce, logistics and shipping, with particular depth in maritime cybersecurity. He speaks regularly at international conferences and has contributed to the NATO Maritime Interdiction Operational Training Centre (NMIOTC). He has also co-authored parts of BIMCO’s Guidelines on Cyber Security Onboard Ships, a widely adopted industry reference.