A cyber attack on an external service provider of check-in and boarding systems has completely disrupted air traffic at Brussels Airport on Saturday morning. Because everything has to be done with pen and paper, there are long queues with nervous travelers in the departure hall and there is a lot of police and security present. The chaos in the airport can be clearly felt. Ten flights have been canceled for the time being, four of them have been diverted and all flights have a delay of an average of an hour.

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