Chinese state-sponsored attackers breached 13 US oil and natural gas pipeline companies between December 2011 to 2013 following a spear-phishing campaign targeting their employees. The end goal of the attacks was to help China develop cyberattack capabilities that would allow future intrusions to physically damage targeted pipelines or disrupt US pipeline operations. The tactics, techniques, and procedures (TTPs) shared in the joint advisory are still relevant and can help US critical infrastructure organizations protect their network from similar attacks. The joint advisory follows the DarkSide ransomware attack against the networks of Colonial Pipeline, a company managing the most extensive US pipeline system.
Source: https://www.bleepingcomputer.com/news/security/chinese-state-hackers-breached-over-a-dozen-us-pipeline-operators/