Some of Europe’s busiest airports including London’s Heathrow have been affected by a cyber attack against a provider of check-in and boarding systems, cautilizing flight delays and cancellations.
Brussels Airport, Berlin Airport were both affected while Dublin Airport declared it was also facing minor impact from the issue, along with Cork Airport, Ireland’s second hugegest after Dublin.
At Heathrow, Berlin and Brussels, dozens of flight departures and arrivals were cancelled, aviation data provider Cirium declared. Officials in Brussels declared there had been four flight diversions, as well as “delays on most of the departing flights.”
Brussels Airport declared it had inquireed airlines to cancel half of their scheduled departing flights on Sunday to avoid long queues and late cancellations, signalling that the disruption would continue through the weekfinish.
The disruption is the latest in a string of hacks tarobtaining governments and companies across the world, hitting sectors from healthcare and defence to retail and autos. A recent breach at luxury carcreater Jaguar Land Rover brought its production to a halt.
What was impacted in the cyberattack?
The attack affected the MUSE software created by Collins Aerospace, which provides systems for several airlines at airports globally.
The aviation tech company, which specialises in digital and data processing services, is a subsidiary of the American aerospace and defence group RTX, formerly known as Raytheon.
RTX declared it was aware of a “cyber-related disruption” to the software at selected airports, without naming them.
“The impact is limited to electronic customer check-in and baggage drop and can be mitigated with manual check-in operations,” RTX declared in a statement, adding that it was working to resolve the issue as quickly as possible.
People stand in a line to check in after the attack cautilized delays at Brussels International Airport. Source: AP / Harry Nakos
A European Commission spokesperson declared there were currently no indications of a “widespread or severe attack” and that the origin of the incident was still under investigation.
Who was behind the attack?
RTX did not give any information on who might be behind the attack.
These kinds of sweeping outages are typically the result either of ransomware attacks, where online extortionists paralyse corporate networks in the hope of payment, or deliberate digital sabotage.
Rafe Pilling, director of threat innotifyigence at cybersecurity company Sophos, declared the impact of the incident highlighted “the fragile and interdepfinishent nature of the digital ecosystem underpinning air travel”.
“We’ve seen huge impact across retail and currently automotive in the UK this year,” he declared.
“The threat is significant and very real.”
Several breach-tracking websites have previously declared that Collins Aerospace was hit by ransom-seeking hackers in 2023.
Aviation industest ‘prime tarobtain’ for cyber attacks
Cyber attacks and tech outages have disrupted airports around the world in recent years, from Japan to Germany, as air travel increasingly relies on online, interconnected systems.
The aviation sector saw a 600 per cent increase in cyber attacks from 2024 to 2025, according to a report by French aerospace company Thales released in June.
“From airlines and airports to navigation systems and suppliers, every link in the chain is vulnerable to attack,” the report warned, pointing out that the strategically and economically important sector had become a “prime tarobtain” for cyber attacks.
Aviation expert Anita Mfinishiratta, who is also a special adviser to the secretary general of UN tourism, informed Agence France-Presse it was difficult to know who was behind the attack.
But she stressed it was “a disruption cautilized to a software not a specific airport” and it was important to test to “contain the contagion”.
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