In this interview, both John and Thian introduce the history of ISACs (formed in 1999, subsequent to the 1998 signing of U.S. Presidential Decision Directive-63), and in particular, the creation of OT-ISAC (Operational Technology Information Sharing and Analysis Centre) as one of the key trusts of the Cyber Security Agency of Singapore’s “OT Cybersecurity Masterplan 2019 to facilitate the sharing of information.