Dennis Dayman

Chief Information Security Officer at Code42

As Chief Information Security Officer, Dennis Dayman leads global risk and compliance, security operations, incident response, and external and internal threat management and investigations. Dennis boasts over 25 years of expertise in security/privacy, data governance, and regulatory compliance, with notable roles at Maropost, Return Path, and Eloqua, where he ensured compliance and spearheaded privacy initiatives.

Dennis also serves as a member of the U.S. Department of Homeland Security (DHS) Data Privacy and Integrity Advisory Committee – providing policy, operational, and technological advice on issues within DHS that relate to data integrity and data privacy-related matters. Dayman is also a U.S. Delegate for the U.S. Technical Advisory Group (TAG) within the International Organization for Standardization (ISO) and American National Standards Institute (ANSI). Before joining Code42, Dayman served as the Resident CISO for Proofpoint.

An active contributor to industry boards like M3AAWG and IAPP, Dayman shapes digital communication regulations and serves as a mentor and investor in startups. Holding a B.A. in Criminal Justice from Stephen F. Austin State University, his contributions continue to impact internet governance and data protection globally.

Org chart

Timeline

  • Chief Information Security Officer

    Current role

View in org chart