The country’s largest energy retailer Origin, health service network Partnered Health Group, popular telehealth provider Updoc and apartment hotel chain Quest are among the high-profile targets of online criminals since June.

Names, addresses, banking details, birthdays, contact information, Medicare numbers and private health insurance are among the trove of data confirmed or feared to have been leaked during the disturbing digital attacks.

But a data breach “doesn’t need to hand criminals a complete identity in one file”, AI cybersecurity platform SentinelOne Australia and New Zealand division vice-president Jason Duerden said.