What should the military services and DoD do about hacking official networks?

Something. Anything. Too often now we're guilty of just excusing foreign countries' actions because we're afraid to offend them. We have almost zero respect from the rest of the world because they know we won't really do anything. We're an embarrassment. I'm stationed in Italy. I've been to a few other countries. We really don't have a good reputation with much of anyone. Mostly because they don't respect us. We don't stand up for ourselves anymore. Do something.