After the aviation system was attacked by a cyber attack, travel chaos in European airlines continues.

A certain key airline's check-in system was attacked by a cyber attack, forcing staff to manually process procedures for passengers. On Sunday, airports in Berlin, London, and Brussels are still facing delays. The system interruption originated from a cybersecurity event at Collins Aerospace on Friday night, which led to the paralysis of its MUSE software. This software platform provides technical support for check-in, boarding, and baggage handling systems for multiple airlines worldwide. Due to the inability to use self-service check-in kiosks and baggage drop-off machines, airports had to rely on manual processes, resulting in slower passenger processing. Berlin Brandenburg Airport reported that delays are still ongoing; Heathrow Airport, on the other hand, stated that "the vast majority of flights" are still operating normally but advised passengers to check their flight status before heading to the airport. They also advised long-haul passengers not to arrive more than 3 hours early and short-haul passengers not to arrive more than 2 hours early. Since the beginning of this year, cyber threats targeting infrastructure and the aviation sector have significantly increased. A report released by the French defense company Thales Group in June revealed that ransomware attacks in the aviation sector have increased by 600% compared to last year, with dozens of incidents affecting airlines, airports, navigation systems, and related services.