Foreign hackers have reportedly managed to break into the computer network controlling the nation's power grid. The discovery has raised alarm about how such unauthorized access could be used to harm the U.S., though the discovery may motivate actions to strengthen the security systems surrounding the nation's infrastructure. A Wall Street Journal report that foreign hackers have repeatedly penetrated the U.S. power grid computer network has delivered a loud wake-up call. Cyber-spies from countries including China and Russia have breached the electrical infrastructure's computer network and left software tools behind that would have allowed them to control or destroy infrastructure...