AP Photo

If you work in Washington — on the Hill or on K Street, at a law firm or at a think tank — you’ve probably been hacked. If you work at a major American company, you’ve probably been hacked, too. The penetration of U.S. computer networks by Chinese hackers has been going on for more than three decades. It’s good that it is finally getting attention, but with that spotlight have come exaggeration and myths that need to be discarded.