The Defense Department's network defenses remain vulnerable to advanced attacks in cyberspace that could jeopardize military missions, according to a new assessment from the Pentagon's operational testing chief. Despite White House and DOD efforts to address national security challenges in cyberspace, the department has "not yet developed sufficiently advanced cyberdefense tactics to counter advanced adversary tactics and to consistently operate in degraded cyber environments," states the latest annual report to Congress from J. Michael Gilmore, the Pentagon's director of operational...