The latest report by the Australian Signals Directorate warns cyber security is the fastest-growing threat to the country. | Sky News Australia

Last month, we ran our largest cyber security drill ever. Our aim was to test Australia's national response to a major cyber security incident. Exercise Cyber Arrow brought together over 175 organisations across government, industry and key critical infrastructure sectors to prepare and respond to a major cyber security incident. Exercises like this are critically important for Australia to build the relationships and muscle memory required to respond to significant national cyber security incid