More U.S. companies have been added to the list of telecommunications firms hacked in a wave of breaches by a Chinese state-backed threat group tracked as Salt Typhoon.

A Chinese hack compromised even more U.S. telecoms than previously known, including Charter Communications, Consolidated Communications and Windstream, the Wall Street Journal reported late on Saturday,

Salt Typhoon’s latest victims include Charter, Consolidated, and Windstream, underscoring the widening scope of China's cyberespionage campaign against critical US infrastructure.