Gas pipelines in urgent review of defences after Colonial hack May 14, 2021 – 2.41pm Share Gas pipeline owners in Australia are intently scrutinising the devastating ransomware attack that brought the United States’ biggest pipelines for petrol and diesel to a near-week-long standstill, with the intention of beefing up their already extensive cyber-security precautions and improving “plan B”-type fall-back measures. Pipeline industry sources say operators already have extensive back-up measures and redundancies in place to try to ensure supply is maintained in the event of a cyber-attack, given the risk to critical infrastructure from malicious actors has been evident for many years.