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 (JAL) (9201.T), opens new tab said on Thursday its systems returned to normal, with same-day ticket sales resuming, after a cyberattack delayed some domestic and international flights.

Japan Airlines Co. said it’s experiencing issues with its systems due to a cyberattack that could impact local and international flights.