Don't believe it's secure. The nukes have protection and data diodes, but we have some dumbass cyber engineers. I was formerly in the nuke industry where the senior cyber engineer failed to recognize a phishing email sent out by corporate to weed out the people who were warned not to click everything.

I believe he's stating the truth that a nuke will cause an employee blast that will destroy most electronics outside a Faraday cage. The nuke industry is poorly prepared for cyber espionage although the executives say differently.