Old tech microwave if installed properly is almost hack proof and not subjected to Internet outages caused by carless construction workers cutting buried cables, failure from the Internet provider's failed updates, and nefarious folks messing with the Internet. The US government has already told members of Congress not to have encrypted conversation on their cell phones. They say Chinese hackers have infiltrated the phone network and apparently they can't figure have to get them out.
Personal opinion: I am afraid for this country if there is a real confrontation with China. We have allowed ourselves to become dependent on "connection less" communications that isn't secure and potentially exposed to anyone with a laptop. Back in the "old days" someone had to physically wire tap to steal your info.
