I think Russia, China, Iran, North Korea, etc. already knew or suspected the capabilities that Snowden has exposed. In fact, I'm sure they also have or are working on those very same capabilities. The only difference is that the public (i.e. the ones being tracked) now know as well.
And exposing those capabilities is not why Putin is going into Crimea. Putin is going in to Crimea to prevent what he sees as a shift in the Ukraine away from Russia and towards Europe putting Russia at a perceived disadvantage politically, militarily and more imporatntly economically. Well, that and he's batsh*t crazy.