Social media, tracking software, online surveillance... it's a Brave New World of online data. Learn how to keep your information under your own control. Siobhan MacDermot speaks at Book Passage in Corte Madera Saturday, Jan. 12 at 4:00 p.m. Wide Open Privacy: Strategies For The Digital Life is for sale on Amazon.com. But first she caught up with KRCB's Danielle Venton, to share some of today's most important privacy secrets. (Images courtesy of AVG technologies, J.R. Smith and Siobhan MacDermott.) 

One of the most interesting things she learned while writing the book, MacDermott says, is that people display a variety of "paradoxes" in their online life. They might think their online commentary is private, for example, when it's not really.