Japan Airlines said it was hit by a cyberattack on Boxing Day, causing flight delays and disruption—here’s what we know so far.

Japan Airlines announced it faced a cyberattack on Thursday that disrupted more than 20 domestic flights. The airline said it managed to halt the attack and restore its systems within hours, emphasizing that flight safety was not compromised.

Japan Airlines said on Thursday (December 26) its systems had returned to normal and that no customer data was leaked, after a cyberattack in the morning delayed some domestic and international flights.