Colonial Pipeline ransomware attack (2021)
Attackers encrypted Colonial Pipeline's business systems on May 7, 2021. The company shut down the pipeline that supplies fuel to the U.S. East Coast, and drivers in several states queued for gasoline. The intrusion hit corporate IT, not the pipeline controls, but the operator could not bill customers and stopped the flow.
Colonial paid a ransom and restored service within days. The Justice Department later recovered part of the payment.
Federal regulators issued new cybersecurity requirements for pipeline operators, moving OT network visibility from an option to a compliance item.
It is the failure mode federal agencies buy OT monitoring for: an intrusion on business systems forcing a shutdown of physical operations.
