Technology correspondent Tony Grasso joins Kathryn to talk about the cyber attack that knocked Nine Entertainment, owner of the Sydney Morning Herald, off air and offline.
Meanwhile the details of half a billion Facebook users have been exposed, North Korea is using cyber attacks as a way to get around sanctions and finance its weapons programs.
But there's some good news over a water treatment plant that was hacked and put at risk...
Tony Grasso is Principal Consultant at cybersecurity firm TitaniumDefence. He worked at GCHQ in the UK and is a former Intelligence Officer in New Zealand.