USA Today reports on the rise in online tracking for behavioral advertising and the subsequent challenges tracking poses to personal privacy. Privacy advocates are concerned that digital shadowing will erode "traditional notions of privacy," while new research suggests that as more companies exercise online tracking, opportunities for the loss of privacy increase, the report states. Ernst & Young's Sagi Leizerov, CIPP, says, "It is a mistake to consider tracking benign...It's both an opportunity for amazing connections of data as well as a time bomb of revealing personal information you assume will be kept private."   
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