@Bret Mantey has nailed it.
Zero trust is the absolute necessary mind-shift we need to undergo. We can no longer afford to bank on a 'secure source' or a 'trusted partner', as these may well be already compromised, unknowingly.
Looking from a perspective of trust - "data at rest" is presumably trusted, whereas "data in transit" is of questionable reputation - for the receiving side.
Encryption of the data transfer itself does nothing to upgrade the trustworthiness of the incoming data. This is the…
