Encryption and non-repudiation to-from any deployed field device back home is analogous to putting a lock and your ID on your front door. It would deter the ave

Encryption and non-repudiation to-from any deployed field device back home is analogous to putting a lock and your ID on your front door. It would deter the average "front door unlocked" criminal of opportunity. When does a device not authenticating itself and all it's comms matter? Mossad was able to (at great cost, and with an inept enemy) hijack a telecom supply chain to embedd explosives in internet radios. Were there any operational oversight to simply have these devices call home with signed key challenge, the literal virus OS/code execution/explosive would have at least been caught. I only bring up THAT example to show that supply chains are as exposed as a bad actor wants them to be.