Gen. Keith Alexander , head of the Defense Department's Cyber Command, told Congress that he would give the military a grade of "C" in its ability to protect Pentagon networks, but said things are much better than they were a few years ago and continue to improve.
"We are finding that we do not have the capacity to do everything we need to accomplish. To put it bluntly, we are very thin, and a crisis would quickly stress our cyber forces," Alexander said. "We cannot afford to allow cyberspace to be a sanctuary where real and potential adversaries can marshal forces and capabilities to use against us and our allies. This is not a hypothetical danger."
The U.S. government has said its networks are probed and attacked millions of times a day, and that cyber criminals, terrorists and other nations are getting more adept at penetrating government and private networks to spy, steal critical data or affect critical infrastructure such as the electrical grid.
