Technology correspondent Tony Grasso joins Kathryn to look at how the FluBot malware is spreading by text, rather than email. A software error that causes Tesla's autopilot to slam on the brakes raises questions about the balance between safety and business. And a 22-year-old Ukrainian hacker who was extradited from Poland has now been charged for his part in the REvil ransomware gang, thought to have netted more than US$200m and encrypted at least 175,000 computers.