With Army Gen. Keith Alexander at the helm, Cyber Command is now on its mission--unifying and protecting Defense Department's computer networks against cyberattack.
Deputy defense secretary tries to downplay concerns that the Defense Department and the National Security Agency's cyberspace plans are overly aggressive and may not protect civil liberties.
Keith Alexander says to protect military networks government must focus on several key areas, including hunting for malware and working with stakeholders.
Separating the two positions could help keep abuses of power in check, as the NSA works to win back the public's trust.
Security expert Gary McGraw says the U.S. obsession with cyberwar and its military approach to Internet security is dangerous.
Gen. Keith Alexander, who also runs the U.S. Cyber Command, says it's time to "refine the roles of government and the private sector in securing this nation's critical networks."
Deputy Secretary William Lynn proposes at the RSA Conference that the military should "extend" its so-called active defenses to critical private sector networks, but doesn't offer details.