But when pressed on why systems had not been protected with encryption prior to the recent discovery of an intrusion that gave attackers access to sensitive data on millions of government employees and government contractors, she said, “It is not feasible to implement on networks that are too old.” She added that the agency is now working to encrypt data within its networks.

Source: Encryption “would not have helped” at OPM, says DHS official | Ars Technica

A consultant who did some work with a company contracted by OPM to manage personnel records for a number of agencies told Ars that he found the Unix systems administrator for the project “was in Argentina and his co-worker was physically located in the [People’s Republic of China]. Both had direct access to every row of data in every database: they were root.