"U.S. EPA had an unwanted visitor almost five years ago.
On Nov. 1, 2011, investigators began looking into someone gaining access to the local area network — the physical, interconnected system of computers, servers and other devices — in EPA's Washington, D.C., headquarters on Pennsylvania Avenue. The trespasser had gained access with a personal computer to the agency's network at least six times, specifically the east and north buildings of the complex.
How serious was the breach?
'The impact of this incident represents a compromise of the command and control of EPA systems and the EPA network,' the agency's inspector general said in an investigative report."
Kevin Bogardus reports for Greenwire August 29, 2016.
"EPA: Cyberattack Threatened Agency's 'Command And Control'"
Source: Greenwire, 08/30/2016