The Zero Trust security model is a concept that has been around for several decades but was popularized by John Kindervag’s seminal paper Build Security Into Your Network’s DNA: The Zero Trust Network Architecture published by Forrester in 2010.
Essentially it defines an environment where there are literally no trusted devices, networks, or users. Previous concepts defined a perimeter where devices such as firewalls, IPSs, and the like would protect an enterprise (where everything is trusted) from the Internet or business partners (where no trust could exist).
