The White House Council of Economic Advisers published a report on cyberattacks cost the US economy. The report analyzed the impact of malicious cyber activities on public and private entities, including DoS attacks, sabotage, business disruption, and theft of proprietary data, intellectual property, and sensitive financial and strategic information. The document warns of nation-state actors such as Russia, China, Iran, and North Korea, that are well funded and often conduct sophisticated targeted attacks for both sabotage and cyber espionage. It also warns of devastating cyberattacks that would target sectors that are internally interconnected and interdependent with other sectors.”]
Source: http://securityaffairs.co/wordpress/69298/security/cyberattacks-cost-us.html