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

Australia's Qantas Airways said on Wednesday more than a million customers had their phone number, birth date or home address accessed in one of the country's biggest cyber breaches in years.

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.