He said the AFP believed it knew which particular group was behind the hack, but would “not be naming them” for now.He said it was an unacceptable attack and deserved an appropriate response, and that the AFP has a track record of “bringing back overseas offenders back to Australia to face the justice system.” In issuing the warning, Kershaw said the AFP has made direct contact with Russian authorities about the cyber attack.Medibank says hacker’s data dump could happen daily: More personal details of customers of Australia’s biggest health insurer Medibank Private, hit by a massive cyberattack, were released on Friday, with the company expecting this to happen daily after it declined to pay ransom to the hacker.And we are working hard to bring them to justice.” Data breaches surge as minister warns against paying ransoms Andrew Tillett, Ronald Mizen More than 13.5 million account holders have potentially had their personal information breached in a spate of cyberattacks since September, as Home Affairs Minister Clare O’Neil warned businesses paying ransoms may be “re-victimised”.A lot of these big criminal enterprises have cyber hacking on the one hand, human trafficking on the other and they are really bad human beings.” Asked why the federal government opted to reveal the national origin of the cyber criminals behind the hack, Plibersek said it was something for the AFP to explain."