Two pro-Ukraine hacking groups claimed to have carried out a year-long operation to penetrate Aeroflot's network

A cyberattack on Russian airline Aeroflot has caused a major outage, leading to over 100 flight cancellations and delays.

By Alexander Marrow and Gleb Stolyarov (Reuters) -Russian airline Aeroflot cancelled dozens more flights on Tuesday but said it had now stabilised its schedule after a major cyberattack a day earlier,