A cyber attack was the furtherest thing from Vanessa Hudson’s mind, as she enjoyed her annual leave far away from the New South Wales’ “bomb cyclone” for the heatwave of Europe.

The hack of the Australian carrier follows recent incidents at Hawaiian Airlines and Canada’s WestJet. Here’s what you need to know. Qantas said on Wednesday it is contacting customers after a cyberattack targeted a third-party customer service platform that stored the personal data of 6 million customers.

Australian airline Qantas says a data hack on Monday exposed the personal information of six million customers and it expects the amount stolen to be “significant.”