Pandemic times and working from home. Companies were already exposed by their employees mobile devices and by people working on public wifi networks, like catching up on email while having coffee at the neighborhood coffee house. Now with employees more-or-less permanently remote, what is the corporate network? Add to that the realization that as organizations adopt more and more SaaS offerings into their operations, the distinction between "corporate network" and "public network" vanishes. The old VPN/firewall/DMZ perimeter model was leaky anyway.
