In 1997 with Wagner and Brewer, and again in 2002, we looked at the then-current state of privacy-enhancing technologies (PETs) for the Internet. [27, 26] Now, in 2007, we take a third look. Technologies to help users maintain their privacy online are as important today as ever before—if not more so. Identity theft is the fastest-growing crime in the US today  and it is all too easy for would-be identity thieves to harvest personal information from the online trails Internet users leave every day. Losses of large databases of personal information are an almost daily occurrence ; for example, retailers'servers are penetrated , databases are traded between government and private companies  and laptops containing social security numbers are stolen .