The CISO Myth: Perimeter Guard in a Clinical World
Why “lock it down” thinking fails where care must flow
The modern CISO was not born in a hospital.
The role emerged in the mid-1990s, after Citibank responded to a $10 million cyber theft by Vladimir Levin, through the international funds transfer system. Steve Katz became the world’s first Chief Information Security Officer, hired with two directives: “Build the best cybersecurity department in the world” and “go out and spend time with our top international banking customers to limit the damage.”
The CISO role was forged in banks, payment networks, and financial services firms where the primary asset was transactional data, the primary threat was theft, and the primary strategy was containment. Build a perimeter. Harden it. Monitor ingress and egress. Assume that anything inside the walls is trusted and anything outside is hostile.
This model worked well enough when the worst-case failure mode was fraud.
It collapses completely when the w…
