Since stepping into the CEO role at Mimecast in January 2024, Marc van Zadelhoff has wasted no time making his mark. A seasoned leader with a proven track record in cybersecurity, Marc has been instrumental in driving innovation, strengthening leadership teams, and refining Mimecast’s security vision. Known for his strategic mindset and hands-on leadership, Marc has gained the trust and admiration of both his executive peers and security professionals. Under his guidance, Mimecast has sharpened its focus on threat detection, email security, and business continuity solutions, ensuring organizations worldwide stay ahead of emerging cyber threats. Beyond the boardroom, Marc is a respected voice in the cybersecurity community, advocating for greater collaboration, resilience, and proactive defense strategies. His ability to align technology, business, and security priorities has made him a driving force in cybersecurity leadership — and a well-deserved finalist for Security Executive of the Year.