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

Responsibility for the cyberattack was claimed by a Ukrainian hacker group called Silent Crow along with a Belarusian hacker activist group known as the Cyber-Partisans.

MOSCOW (Reuters) -Russian airline Aeroflot was forced to cancel more than 50 round-trip flights on Monday, disrupting travel across the world's biggest country, as two pro-Ukraine hacking groups claimed to have inflicted a crippling cyberattack.

A sweeping cyberattack has forced hundreds of pharmacies across Russia—primarily in Moscow—to shut down, per reports. The breach comes just one day after a massive hack crippled Aeroflot, Russia's largest airline,

Russian prosecutor said it opened a criminal investigation into the cyberattack targeting Aeroflot, the largest airline in Russia.

Russia's national airline, Aeroflot, has fallen victim to a cyberattack. Two hacker groups, which had previously exposed the personal information of 101,000 individuals back in January 2025, have stepped forward to take responsibility for the incident.

Russia's national airline, Aeroflot, said it had cancelled dozens of flights after pro-Ukrainian hackers claimed an attack on the carrier's IT systems. A statement from hacking group Silent Crow said it carried out the attack with the help of a Belarusian group Cyberpartisans.

Aeroflot, Russia's national carrier, could face up to a year recovering from a severe cyberattack by hacker groups, affecting over 100 flights and prompting additional resources to stabilize operations.