A cyber criminal has made contact with Australia's Qantas following a data breach last week that exposed personal information of six million customers, a company spokesperson told Reuters on Tuesday.

Australian airline Qantas on Wednesday confirmed that personal data of 5.7 million customers was compromised in a cyberattack involving one of its call

Australian airline Qantas said that a hacker made off with a trove of customers’ personal data including passenger names, emails, phone numbers, birth dates and frequent flyer numbers.