Computer error possibly grounded LOT planes

Polish prosecutors are examining whether Sunday's outage which grounded LOT airplanes at Warsaw's Chopin Airport was caused by a computer error, a spokesman for the Warsaw prosecutor's office said. LOT said on Wednesday that the malfunction was caused by a cyber attack. When asked about the scenario outlined by the prosecutor's office, a spokesman for LOT replied that "the current state of our knowledge indicates that outside interference must have taken place." Poland's Warsaw airport experienced an outage that grounded 1,400 passengers on Sunday afternoon. The incident crashed LOT airline’s passenger registration system and led to the cancellation of 10 domestic and international flights.