@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…

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