Russian airline Aeroflot says it has stabilised its schedule after a major cyberattack on Monday.
Two pro-Ukraine hacking groups claimed to have carried out a year-long operation to penetrate Aeroflot's network that crippled 7,000 servers, extracted data on passengers and employees and gained control over the personal computers of staff, including senior managers.
The Interfax news agency said Aeroflot had cancelled 59 round-trip flights from Moscow on Monday out of a planned 260. A further 22 flights out of Moscow and 31 into the capital were cancelled on Tuesday.
Aeroflot's online timetable showed that all but one of the 22 cancelled flights out of Moscow on Tuesday had been due to leave before 10am Moscow time (0700 GMT), but the schedule for the rest of the day appeared largely unaffected.
"As of today, 93 per cent of flights from Moscow and back are planned to be operated according to the original schedule (216 return flights out of 233)," the company said.
"Until 10:00, the company carried out selective flight cancellations, after which Aeroflot's own flight program stabilised."
Apart from the many cancellations, Monday's attack caused heavy delays to air travel across the world's biggest country and drew anger from affected passengers.
Responsibility was claimed by the Belarusian Cyber Partisans, a long-established group that opposes President Alexander Lukashenko, and by a more shadowy and recent hacking outfit that calls itself Silent Crow.
“We declare the successful completion of a prolonged and large-scale operation, as a result of which the internal IT infrastructure of Aeroflot was completely compromised and destroyed,” Silent Crow wrote on Telegram. “Glory to Ukraine” Long live Belarus!”
The scale of the attack has led to questions about who the hackers actually are, and how much threat they might pose to Russia.
The Kremlin described the latest cyber attack against Aeroflot as “worrying”, while Russia’s prosecutor's office launched a criminal investigation.
Russian lawmakers said the cyberattack was a wake-up call and that investigators should focus not only on the perpetrators but on those who had allowed it to happen.
“We must not forget that the war against our country is being waged on all fronts, including the digital one,” senior Russian lawmaker Anton Gorelkin said in a statement.
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