Speaking of MCU only.
Stark put a button on a console and hacked S.H.I.E.L.D.'s entire network. S.H.I.E.L.D. shut down Jarvis and infiltrated Stark's home, which, given that it houses all his research on Iron Man and the new arc reactor, we must believe is at least as heavily guarded as Stark Enterprises. Maybe this is a rumble, but who wins the tech war?