Mark Castagneri

vCISO, Security Engineering, Risk Management Consultant

Mark Castagneri is a seasoned cybersecurity executive and program manager with 18 years of experience designing, implementing, and governing security, risk, and data‑protection initiatives. He holds CISSP and AWS Certified Cloud Practitioner credentials and a strong technical foundation (B.S. in Physics, M.S. in Environmental Engineering). His expertise covers threat modeling, NIST, ISO 27001, FedRAMP, NERC‑CIP, HIPAA/HITRUST, PCI‑DSS, and emerging AI security frameworks.

Throughout his career, Mark has consistently delivered measurable risk reductions, established robust governance structures, and mentored cross‑functional teams. He also contributes to industry groups (e.g., Cloud Security Alliance Trusted AI Safety Knowledge) and holds six patents related to nuclear waste handling.

Overall, Mark presents a blend of strategic vision, hands‑on technical acumen, and proven program‑management skills, positioning him as a valuable leader for organizations seeking to elevate their cybersecurity posture and compliance maturity.