tober 7, 2016. Courtney Weaver, Sam Fleming and Kathrin Hille, “US Expels Russian Spies over Election Hacking,” Financial Times, December 29, 2016. Vindu Koel and Nicole Perlroth, “Yahoo Says 1 Billion User Accounts Were Hacked,” New York Times, December 14, 2016. Laura Sanders, “IRS Says Cyberattacks on T