Lucas123 writes "Two of the contractors involved in developing online health insurance exchanges under the Affordable Care Act, which have been plagued by technical problems since launching this month, have had serious data security issues in the past. Quality Software Services developed the software for the Affordable Care Act's data services hub and oversaw development of tools to connect the hub to the databases of other federal agencies. Last June, an audit report by the Health and Human Services Inspector General found QSS failed to adhere to federal security standards (PDF) in delivering IT testing services for the Centers for Medicare & Medicaid Services. Additionally, services firm Serco suffered a major security breach in 2012. Serco won a five-year $1.3 billion contract to process and verify paper applications for health insurance via the online exchanges. Serco's breach exposed sensitive data of more than 123,000 members of the Thrift Savings Plan, a $313 billion retirement plan run by the U.S. Federal Retirement Thrift Investment Board. The exposed data included full names, addresses, Social Security Numbers, financial account information, and bank routing information."