The document discusses cybersecurity issues related to critical infrastructure sectors. It notes that there are 16 critical infrastructure sectors designated by the US Department of Homeland Security that are vital to national security and safety. These sectors include chemical, communications, dams, emergency services, financial services, government facilities, information technology, transportation, and others. The document expresses concern about the lack of security for industrial control systems and SCADA systems that monitor and control critical infrastructure. It provides examples of past cyber attacks on these systems and notes that the majority of attacks in 2014 targeted advanced persistent threats. The document concludes that as industrial systems increasingly connect to the internet and migrate to web-based interfaces, they represent an growing security risk due to vulnerabilities.