'A potential Achilles' heel'

When will the net stop endangering geographical boundaries? This via SQ: 'Former CIA Director George J. Tenet yesterday called for new security measures to guard against attacks on the United States that use the Internet, which he called 'a potential Achilles' heel..."in this age when we still think the Internet is a free and open society with no control or accountability...ultimately the Wild West must give way to governance and control." The director is concerned about more and more organizaitons linking up to the net, making 'the system' vulnerable.