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Investing.com -- A ransomware attack targeting Collins Aerospace’s Muse check-in and boarding system disrupted operations at several major European airports, including Heathrow, Brussels, Berlin and Dublin.
The attack began Friday and forced airports to rely on manual check-in procedures, leading to long delays and widespread flight cancellations.
Brussels Airport canceled nearly half of its scheduled departures on Monday due to unresolved technical and security issues, according to airport officials.
The European Union Agency for Cybersecurity, ENISA, confirmed that a third-party ransomware attack was responsible for the disruptions. Law enforcement authorities are investigating the incident.
The disruptions had an immediate impact on airline share prices. Shares of Lufthansa, International Consolidated Airlines Group, Air France, EasyJet, Wizz Air, Ryanair and TUI were all trading lower between 0.5% to 1.3% at 04:53 ET (08:53 GMT).
Airports reported that self-service and online check-in options remained operational, but manual check-in led to longer processing times.
Authorities continued to advise passengers to verify flight statuses and use alternative check-in methods where possible.