Aidan Simister (Chief Executive Officer)

Aidan Simister is CEO of Lepide, where he leads the company’s strategy around helping organisations understand and reduce risks to their most sensitive data. With more than 20 years of experience in the IT and cybersecurity industry, Aidan has worked extensively with organisations tackling challenges around data security, identity and access, regulatory compliance and insider risk.

His current focus is on how AI is changing the enterprise security landscape, particularly the risks created when tools such as Microsoft Copilot and AI agents interact with excessive permissions, overexposed data and poorly governed identities.

Aidan writes about data security strategy, AI security, identity and access risk, compliance, and the evolving priorities facing CISOs and security leaders.

Primary areas of expertise: Data security strategy, AI security, identity and access risk, compliance, insider risk, cybersecurity leadership.