In a new series of interviews with cybersecurity leaders, we meet Jack Mersey, CISO at Westbury Street Holdings.

In an in-depth interview, he discusses threats -- from nation states to business email compromise -- security awareness and culture, and the challenges of ensuring security to a highly distributed business with 26,000 people and over 1000 sites that operates around the clock.

How does a CISO gain the confidence, and support, of colleagues from baristas and chefs to general managers and finance teams?

How can a security team operate internationally and keep headcounts low?

And how can cybersecurity leaders ensure security does not become a blocker?

Interview by Stephen Pritchard