Cyber attack cripples Europe
There are fears more Australian businesses may have fallen victim to a global cyber attack which hit more than 75,000 computers in Europe and crippled Britain's health system.
The attack impacted 99 countries in the early hours of Saturday morning, Australian time.
Ross and John spoke with Alastair MacGibbon, who is special adviser to the Prime Minister on cyber security.
He said many people may turn on their computer at work on Monday to find out they've fallen victim.
The malware locks all files on a computer, demanding you pay a ransom to get them unlocked.
He said there was one way to ensure you don't fall victim.
"Update your windows operating system and you'll be immune," Mr MacGibbon explained on 3AW Breakfast.