The National Cybersecurity and Communications Integration Center (NCCIC) released the document in September. The document is not classified, but it is intended for official use only. It describes an interest within Anonymous to target industrial control systems, but does not demonstrate capabilities. The NCCIC said in its report that the group has an increased interest in control systems. The report is intended to be published by the National Cyber Security and Communication Integration Center of the U.S. Department of Homeland Security.
Source: https://thehackernews.com/2011/10/national-cyber-security-bulletin-on.html