Tim Cook


As a partner at Acertitude, Tim leads executive search assignments across multiple sectors and in many parts of the world. He is highly specialized in IT and cyber security leadership, having recently completed CIO, CTO, CISO, and CSO searches as well as cyber assessments in different geographies and jurisdictions including the U.S. and Europe.

Tim invented a maturity model for cyber security leadership called the CIRO Maturity Model™ to help organizations and individuals understand what good looks like in IT and cyber leadership that has been widely used internationally in search and assessment assignments. Tim combines this with psychometric data to help clients, and individuals, benchmark their cyber teams for succession planning and development purposes.

Tim has 20 years of executive search and assessment experience, covering both Egon Zehnder and Russell Reynolds Associates, where he co-led the Global Cyber and CIO Practices. Tim has also worked in the defense sector with Fujitsu Services, been a CEO of a scientific software company, and served in the Armed Forces. Tim has a degree in English Literature, an MBA from London Business School, and an MSc from UCL.