US agency says it was alerted to breach by contractor CGI Federal

The US Government Accountability Office (GAO) said Monday that CGI Federal, an IT contractor and unit of CGI Inc, notified the agency of a data breach last month affecting about 6,000 current and former GAO employees.

The GAO, a research arm of Congress, said in a statement the data involved personally identifiable information on employees including some people who worked there from 2007 to 2017.