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“Princeton’s Paul Ohm writes about Netflix’s insane new plan to release millions of customers’ personal information — ZIP code, gender, year of birth — as a sequel to its Netflix Challenge. Latanya Sweeney’s famous study on de-anonymizing data has shown that date (not just year) of birth, gender and ZIP are sufficient to personally identify 87% of Americans. In other words, Netflix is about to put the behavioral data about viewing choices for millions of Americans into the public domain, despite its legal duty to keep this information private.”