For up to eight hours on Wednesday, some 500 million people in China could not get web pages to load. It was an outage of epic proportions, which immediately spawned chatter and headlines wondering what exactly happened. The working theory right now? Rather than blocking websites, as intended, Chinese Internet restrictions actually redirected users to those same sites. For more information on the outage, Melissa Block talks to New York Times cybersecurity reporter Nicole Perlroth.