The United States and Britain issued a first-of-its-kind joint warning Monday about the risks of Russian cyberattacks. The statement warned of attacks against both government institutions and private companies. Meanwhile, in Russia, an investigative journalist who had been reporting on secret Russian paramilitary groups fighting in Syria has died, after having fallen from the balcony of his fifth-floor apartment. Maxim Borodin was 32 years old. Authorities say there is nothing suspicious about his death. Yet critics say only one day before his fatal fall he called a friend to say there was a gunman on his balcony and other masked men lurking in the stairwell near his apartment.