The largest fuel pipeline system in the United States was forced to shut down its entire network after a cyber attack, the company said in a statement. The Colonial Pipeline ships gasoline and jet fuel from the Gulf Coast of Texas to the populous East Coast through 5,500 miles of pipeline, serving 50 million consumers. In a statement the company said that on Friday it was the “victim of a cybersecurity attack” and that in response it took its systems offline. This “temporarily halted all pipeline operations, and affected some of our IT systems,” the company said. It gave no details of what the attack entailed, but it is not thought to have caused any immediate disruptions. Colonial, based in the southern state of Georgia, is the largest pipeline operator in the United States by volume, transporting 2.5 million barrels of gasoline, diesel fuel, jet fuel and other refined petroleum products per day.