It’s been 40 years since Lisa Donnan has queued for gas. But last month the cybersecurity expert found herself joining the long lines of cars across the east coast of the US looking for fuel after the latest in a series of cyber-attacks had shut down the pipeline that provides fuel to 45% of the region. “The last time I did that was in the Iran crisis,” she said. “My dad had to wait with me.” The hack of the Colonial Pipeline was just one of a...