"There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know."

You remember in "Jaws" where a girl is swimming in the ocean and the music starts playing ("dun-dun, dun-dun, dun-dun ...")? You know what's going to happen ... at the last moment she sees the shark's dorsal fin slicing through the water and, "eeeekkkkkkkkk!" ... too late! CHOMP!

Even without cookies, popular browsers such as Internet Explorer and Firefox give Web sites enough information to get a unique picture of their visitors about 94 percent of the time, according to research compiled over the past few months by the Electronic Frontier Foundation.

The U.S. Patent and Trademark Office has agreed to review a controversial patent issued in 2001 that is claimed to cover much of the technology underlying VoIP.

The Electronic Frontier Foundation has created an on-line tool that details the wealth of information a Web browser reveals, which can pose privacy concerns when used to profile users.

The Electronic Frontier Foundation (EFF) and the University of California, Berkeley's Samuelson Clinic have filed a lawsuit (PDF document) against six government agencies, seeking information on their use of social networking sites for data collection and surveillance.

An Illinois judge this week dismissed a lawsuit filed by the Cook County Sheriff's Office charging Craigslist with facilitating prostitution.

More than two dozen authors and publishers have filed an objection to a proposed settlement that would allow Google to digitize and sell millions of books, saying that the agreement ignores important privacy rights of readers and writers.