MOSCOW A cyberattack on Russian state-owned flagship carrier Aeroflot caused a mass outage to the company's computer systems on July 28, Russia ’s prosecutor’s office said, forcing the airline to cancel more than 100 flights and delay others. Ukrainian hacker group Silent Crow and Belarusian hacker activist group the Belarus Cyber-Partisans, which opposes the rule of Belarusian President Alexander Lukashenko, claimed responsibility for the cyberattack. It is one of the most disruptive