A sign on a door shows prohibited articles at the Industrial Control Systems Cyber Emergency Response Team Watch and Warning Center during the first tour of the government’s secretive cyber defense lab at the Idaho National Laboratory on Sept. 29, 2011, in Idaho Falls, Idaho.
A sign on a door shows prohibited articles at the Industrial Control Systems Cyber Emergency Response Team Watch and Warning Center during the first tour of the government’s secretive cyber defense lab at the Idaho National Laboratory on Sept. 29, 2011, in Idaho Falls, Idaho. Mark J. Terrill AP
A sign on a door shows prohibited articles at the Industrial Control Systems Cyber Emergency Response Team Watch and Warning Center during the first tour of the government’s secretive cyber defense lab at the Idaho National Laboratory on Sept. 29, 2011, in Idaho Falls, Idaho. Mark J. Terrill AP

Experts: U.S. must do more to protect energy grid from cyberattacks

October 21, 2015 5:24 PM