Ransomware cyberattack shuts down major US pipeline, company says Efforts continue to restore pipeline amid cyber attack Replay Video UP NEXT A cyberattack has forced the shutdown of a major gas pipeline in the U.S. that supplies 45% of all fuel consumed on the East Coast. The cyberattack against Colonial Pipeline, which runs from Houston to Linden, New Jersey, began 7 p.m. on Friday night, according to a Federal Emergency Management Agency report reviewed by ABC News. "We proactively took certain systems offline to contain the threat, which has temporarily halted all pipeline operations, and affected some of our IT systems," the company said in a statement.