A cyberattack targeting check-in and boarding software is causing delays and cancellations at Europe’s busiest airports.

Passengers are facing another day of disruption at London Heathrow after an alleged cyber attack targeted a service provider for check-in and boarding systems.Heathrow, Brussels and Berlin airports all experienced delays and disruption on Saturday following the “technical issue” affecting Collins Aerospace,

Passengers are facing another day of disruption at several airports, including London Heathrow, after a cyber attack crippled operations yesterday.

Heathrow was among several European airports hit by delays on Saturday after a cyber-attack affecting an electronic check-in and baggage system. The airport said a number of flights were delayed as a "technical issue" impacted software provided to several airlines.

Heathrow cyberattack sparks Europe-wide airport chaos, grounding flights and exposing critical flaws in shared check-in systems.