The Pentagon must shift its cybersecurity focus from defensively protecting its networks to deterring hackers' attacks, Vice Chairman of the Joint Chiefs of Staff Gen. James Cartwright said today. During a breakfast with reporters, Cartwright said the Defense Department's approach to cybersecurity consists of "90 percent of thinking about how to build the next best firewall and 10 percent thinking about what we might do to keep them from attacking us." DOD, he said, must reverse those percentages. The Pentagon...