China hacked the OPM

http://www.washingtonpost.com/news/morning-mix/wp/2014/07/09/report-chinese-hacked-into-the-federal-governments-personnel-office

http://computer.financialexpress.com/news/opm-hack-about-22-million-or-7-of-us-population-data-stolen/12802/

http://money.cnn.com/2015/07/10/technology/opm-hack-fingerprints/index.html