It is a story that is becoming all-too-familiar: the US government had to admit on Thursday that one of its key personnel databases, containing the records of up to 4 million staff, had been compromised in a large-scale hacking attack. Officials speaking off the record laid the blame at China’s door, though did not immediately provide any evidence for this claim.The full scale of the information the attackers accessed remains unknown but could include highly sensitive data such as medical records, employment files and financial details, as well as information on security clearances and more.
http://www.theguardian.com/technology/2015/jun/05/cyberwar-hacking-attacks-nations-defence