'Smart Grid' raises security concerns

Electric utilities vying for $3.9 billion in new federal "smart grid" grants will need to prove that they are taking steps to prevent cyberattacks as they move to link nearly all elements of the U.S. power grid to the public Internet. The requirements from the Energy Department come amid mounting concern from security experts that many existing smart-grid efforts do not have sufficient built-in protections against computer hacking.

Read More