Cyberattack Shut Pipeline Data System, Energy Transfer Says

A system that digitally processes customer transactions for a major pipeline network in the U.S. was shut down April 2 after a cyberattack.

An electronic data interchange (EDI) provided by third-party Energy Services Group LLC for Energy Transfer Partners LP’s Panhandle Eastern pipeline system was attacked April 2 and will be unavailable until “further notice,” Energy Transfer said in a notice to shippers.

The shutdown could affect a network of major pipelines owned by subsidiaries, including Panhandle Eastern Pipe Line Company, which owns lines from Michigan to Texas, and Transwestern Pipeline Company LLC. The EDI system, designed to cut costs ...