Nearly one million Australian members of Sony's PlayStation Network may have had personal information compromised--including credit and debit card numbers--in what might be one of the world's largest privacy breaches, reports The Age. Between 17 and 19 April, an "illegal and unauthorised person" accessed information belonging to 77 million users worldwide. "While there is no evidence...that credit card data was taken, we cannot rule it out at this time," said a Sony representative. Sony's notice comes days after the network suspended services. Former Privacy Commissioner Malcolm Crompton, CIPP, called for mandatory breach notification laws, adding, "Anybody who has given their details to PlayStation should be in touch with their bank." Australia's privacy commissioner will begin a formal investigation, while New Zealand's privacy commissioner urges PlayStation users to be vigilant.