The dark web is an unseen iceberg composing more than 95% of the real activity of the web, where databases, password-protected websites, official records from federal, state and local governments, various intranets, messageboards, website archives, forums and vast catalogues of data all reside.

White and black hat hackers, law enforcement agencies and criminal networks all operate there in the shadows.

And now, DARPA, the Pentagon's secretive Defense Advanced Research Projects Agency, has developed a surveillance tool known as "Memex" that can be used to reveal what is hidden on the dark web, and pursue criminal groups of interest – and perhaps control or even kill the dark web for good.

CBS 60 Minutes reported on DARPA's Memex, interviewing the project's director and some of the principles involved. Ostensibly, the effort is focused on tracking and stopping sex trafficking… but obviously so much more is part of this secret military surveillance project. Watch the video report here.