Jared Serbu: How to build an effective early warning system for attacks in cyberspace

The commander of US Cyber Command says he wants to create an effective early warning system for cyberspace – potentially ringing alarm bells when foreign adversaries are preparing attacks on government, or even private networks. But to do it, he says he needs more voluntary sharing of cyber threat information between the federal government and commercial companies. More from Federal News Radio’s DoD reporter Jared Serbu.