Europe Air Travel Snarls Continue After Cyberattack

Passengers wait in a terminal at Berlin's airport. 

Photographer: Carsten Koall/picture alliance/Getty Images

Airports in Berlin, London and Brussels faced continued delays on Sunday after a cyberattack on a key airline check-in system forced staff to process passengers manually.

The outage stems from a cyber incident at Collins Aerospace that knocked out its MUSE software late Friday. The platform underpins check-in, boarding and baggage systems for airlines worldwide. With kiosks and bag-drop machines offline, airports have been forced to rely on manual processing, slowing passenger flows.