When he wrote his best-seller @War, 5 years ago, Shane Harris could see the problem coming.  Now, as he reports for the Washington Post, what to do about cyber-warfare mercenaries is a red-hot question…especially when they’re being asked by employers like the UAE to spy on Americans.  One former NSA staffer blew the whistle to the US Government and says she got little response…so she went to Reuters, and now, Harris, says, there’s a big in-house investigation.