US homeland chief: cyber 9/11 could happen "imminently"

Homeland Security Secretary Janet Napolitano warned that a major cyberattack is a looming threat and could have the same sort of impact as last year's Superstorm Sandy, which knocked out electricity in a large swathe of the Northeast.

Sec Napolitano said a "cyber 9/11" could happen "imminently" and that critical infrastructure - including water, electricity and gas - was very vulnerable to such a strike. "We shouldn't wait until there is a 9/11 in the cyber world. There are things we can and should be doing right now that, if not prevent, would mitigate the extent of damage," said Napolitano, speaking at the Wilson Center think tank in Washington and referring to the September 11, 2001 attacks. She urged Congress to pass legislation governing cyber security so the government could share information with the private sector to prevent an attack on infrastructure, much of which is privately owned.