The Office of the Australian Information Commissioner (OAIC) found that a single data breach affected more than 10 million Australians. In its latest Notifiable Data Breaches Quarterly Statistics Report, the OAIC reveals that it received 215 notifications of data breaches under the Notifiable Data Breach Scheme between 1 January and 31 March 2019. Nearly all of those security incidents (189) affected between one and 1,000 Australians.