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The emergence of online social networks, and the new technologies which support them, carries with it new challenges and threats to consumer privacy and data security. In addition to our families, friends, acquaintances, and colleagues, as well as businesses and marketers, numerous other parties are interested in the information we share within social networks. Identity thieves, scammers, and fraudsters are also seeking to exploit social networks to acquire data about consumers. The social networks themselves are feverishly collecting an ever-growing number of data points about users (including their age, gender, hobbies, interests, spending patterns, location, and so forth) not only to improve and personalize the user experience, but also....