How the U.S. Can Play Cyber-Offense

The United States has been the victim of repeated cyberattacks by foreign powers, and it seems to have little power to stop them. During the 2016 U.S. presidential campaign, Russian hackers broke into the Democratic National Committee’s e-mail servers and made more general efforts to influence the election’s outcome, as detailed in Special Counsel Robert Mueller’s indictment of 13 Russians and three Russian entities. In February, U.S. intelligence and law enforcement officials warned that the Russian government would again try to use cyber-operations to interfere with midterm elections in November. That same month, the White House publicly