A cyberattack that caused port operations to grind to a halt at four container terminals should be subject to a federal probe as a union pushes for DP World to reveal what it knew about the risks. The Dubai-controlled stevedore, which handles 40% of the nation's international freight, closed its Sydney, Melbourne, Brisbane and Fremantle port operations after detecting a breach on November 10. Trucks were left idling at port gates and the transfer of 30,000 containers was delayed, with the back
