Instead of missile launch codes, how about "knowledge of how to built a nuclear weapon"? That was a pretty big deal in WWII/Cold War. Sure it's probably not u

Instead of missile launch codes, how about "knowledge of how to built a nuclear weapon"? That was a pretty big deal in WWII/Cold War. Sure it's probably not useful to any particular individual, but it was certainly useful to the Soviet Union. State secrets aren't just being kept from individual actors.