Further, 1.8 million others, mostly spouses or cohabitants of applicants for government jobs were affected.
Some 1.1 million fingerprints were also stolen.
However, the intruders were likely present on the web connection from May 2014.
The WSJ says these background forms are often held in unencrypted form on the OPMs computer networks.
Since the breaches were revealed in June, an inter-agency task force has been carrying out a forensic inquiry.
At several congressional hearings, Archuleta faced unfriendly questions from lawmakers.
The White House said the incident emphasizes the need for new cyber-security legislation.
source: www.techworm.net