Usually I’m a warhawk, but frankly this isn’t cause enough to put an end to the pustule that is North Korea.
We’ve tolerated their kidnapping, murder, counterfeiting and drug dealing for decades, so nuking them for a bit hacking is bit excessive even by my scale of things.
If they caused a major disruption with loss of life, that might be sufficient reason to pave there cities with radioactive glass - but stealing the email of a corporation? Big deal.