Russian Spies and Conspirators Hacked Yahoo in 2014, DOJ Charges 

The U.S. Department of Justice said Wednesday that four foreign nationals — including two officers of the Russian Federal Security Service — were indicted for computer hacking, economic espionage and other crimes in connection with a massive attack and theft of data from Yahoo’s network in 2014.

Source: Russian Spies and Conspirators Hacked Yahoo in 2014, DOJ Charges | Variety