[barsonme]

(I guess to add on to yours and the previous posters' comments...)

Even if it wasn't North Korea, the U.S. still gains nothing from this except for maybe making NK look even worse.

And the U.S. might make some stupid political decisions, but there's a difference "ill advised" decision and a flat-out stupid decision. Going to war with NK would mean South Korea getting attacked by NK. Would the U.S. risk that?

I honestly do not think so, because it'd signal the end of the U.S.' diminishing credibility in the global sphere. Nobody wants to be friends with a country who'd willingly throw a friend under the bus simply because another country (which has very few friends) hacked into one of millions of corporations in said country.

If the U.S. and USSR could go years without nuking each other, I believe the U.S. has enough restraint to not launch (enough of) an attack on NK that would provoke a NK response towards their southern neighbors.