i am pleased to introduce jonathan mayer. jonathan as a graduate student in computer science and law at stanford university, and a student fellow at the center for internet and society at stanford law school. he and his fellow researchers at stanford security lab have been looking at what really happens with the data when people go online, and how that reality compares to what people might reasonably expect, or what people are told. in a series of groundbreaking reports, jonathan and his colleagues have shown how the privacy assurances made by some self regulatory programs are belied by practices such as browser history, raise questions about the adequacy of the ad choices icon program for behavioral advertising, and shown that clearing cookies doesn't necessarily mean that they're gone for good. is interests lies, as he puts it, wherever information technology, public policy, and law intersect. with debates about the privacy of consumers data currently raging, i suggest that that's a very interesting place to be right now. in