John Cusimano

Cyber & Strategic Risk | Cyber IoT

Managing Director | Deloitte Risk & Financial Advisory

John Cusimano

1700 Market Street

Suite 2700



United States


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John is an electrical & computer engineer and business leader with more than 25 years of experience in process control, functional safety, operational technology (OT) and industrial cybersecurity. He has performed countless industrial control system (ICS) cybersecurity vulnerability and risk assessments. He is a voting member of the ISA 99 cybersecurity standards committee. As part of that committee, he chaired the subcommittee that authored the ISA/IEC 62443-3-2:2020 standard, "IACS Security Risk Assessment & Design." He is the developer and primary instructor of the multiple courses on OT cybersecurity. John is a Certified Functional Safety Expert (CFSE), a Certified Information Systems Security Professional (CISSP), Global Industrial Cyber Security Professional (GICSP), and ISA 62443 Expert.

John Cusimano