David McNamara Bio & About

David mcnamara founder low res

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David’s Biography

David McNamara is the Founder and CEO of CommSec, an indigenous IT security company based in Dublin. With over 20 years of experience in cyber security, David has built CommSec into a leading provider of tailored managed security solutions, helping businesses of all sizes strengthen their cyber resilience.

David’s career began in the Irish Defence Forces, where he developed a strong foundation in security and technology. He then held senior roles at Eir, Siemens, Fujitsu, and IBM, gaining extensive leadership experience in enterprise technology. In 2013, he founded CommSec with a mission to provide pragmatic, robust security solutions that empower SMEs and enterprises alike.

Beyond his role at CommSec, David is a key figure in the Irish cyber security community. He serves as Chair of the Business Growth Committee and an Advisory Board Member at Cyber Ireland, where he helps drive national initiatives to elevate cyber security awareness and foster industry collaboration. He also advises TU Dublin’s Audit and Risk Committee on cyber security governance.

David has board-level experience, having previously served as Chairman of OpenApp, bringing leadership, governance, and strategic oversight to the organisation. His expertise in cyber security risk, governance, and business growth makes him a sought-after advisor for companies navigating today’s evolving threat landscape.

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Book David as a Speaker

David is also an accomplished speaker on cyber security for business, governance, risk and compliance (GRC), data protection, and EU cyber security law. He regularly speaks at live events, contributes to video content, and appears on podcasts. David is available for public speaking engagements— for details, please email [email protected]

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