Some investigators suspect the attacks were part of a sweeping campaign to create a database on Americans that could be used to obtain commercial and government secrets.

It's a seller's market for the cyber war's special forces.

The hackers who infiltrated Anthem made off with one of the most prized possessions in computer crime: the Social Security numbers of as many as 80 million customers of the nations second-biggest health insurer.

Investigators of Anthem Inc.s data breach are pursuing evidence that points to Chinese state-sponsored hackers who are stealing personal information from health-care companies for purposes other than pure profit.

Sony was warned a year ago that hackers had infiltrated its network and were stealing gigabytes of data several times a week.

As cyber expands, so do the breaches.

The U.S. Department of Homeland Security said malware called BlackEnergy was used to access digital systems that control water treatment facilities and parts of the electrical grid.