An anonymous reader sends this excerpt from Nextgov:
"Hackers, possibly from abroad, executed an attack on a Northwest rail company's computers that disrupted railway signals for two days in December, according to a government memo recapping outreach with the transportation sector during the emergency. ... While government and critical industry sectors have made strides in sharing threat intelligence, less attention has been paid to translating those analyses into usable information for the people in the trenches, who are running the subways, highways and other transit systems, some former federal officials say. The recent TSA outreach was unique in that officials told operators how the breach interrupted the railway's normal activities, said Steve Carver, a retired Federal Aviation Administration information security manager, now an aviation industry consultant, who reviewed the memo."