William Rimington is a managing director in Kroll’s Cyber Risk practice, based in the firm’s London office. Over the course of a prominent 20-year career in technology, risk, and cyber security, William has significantly advanced the science and art of technical security testing and the critical role it plays in developing, implementing, and validating security defenses that can stand up to ever-evolving cyber attacks.

William joined Kroll in 2018 from the London office of a Big Four accounting firm, where he had most recently led the firm’s Global Centre of Excellence for Ethical Hacking. In this role, he led the UK technical security testing practice and coordinated the efforts, strategy, training, and R&D of the global networks’ penetration testing capability. During this time, William was instrumental in the firm’s becoming a global member of CREST, the preeminent accreditation and certification body for providers of penetration testing, cyber incident response, and threat intelligence services. Consequently, William’s firm became a UK-approved provider of services for CBEST, an initiative between CREST and the UK Financial Authorities that was launched to help UK financial services organizations, and other critical infrastructure organizations, protect their core systems against cyber attacks.

In addition to his expertise in technical security testing, William has led security reviews within organizations across diverse industries and geographies that covered all facets of the people and process agendas as well as the underlying technology. He is especially adept at communicating current cyber security issues and themes with client executive boards, audit committees, and at external speaking events. His achievements during his time with the firm include the creation and development of a data analytics practice in the London office and the automation of several manual playbooks into a highly efficient digital solution used in testing security operation centers. William started his career in 1999 with LogicaCMG (now CGI), where he worked in software development and systems implementation.

William is active in supporting the discipline of penetration testing in the wider community in the UK, Europe, and Asia, including events such as the UK Cyber Security Challenge, where he drew upon the expertise of contributors from across the UK, France, and Asia-Pacific.

Professional Experience
  • M.Sc., Information Systems, Portsmouth University
  • B.A. (hons.), Archaeology, Durham University
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