Cybercriminals hit Qantas in a major data breach that exposed information from up to six million customers. Airline data breaches are on the rise, putting millions of travelers at risk. The Qantas incident underscores how vulnerable personal information can be.

The cyber incident was discovered on June 30, and is believed to have compromised the data of up to 6 million customers.

Qantas Airways confirmed that personal data of 5.7 million customers was compromised in a recent cyberattack. Here's what the aviation major said about what was accessed, and what customers can do for support.