Is There a Privacy Risk in Google Flu Trends?

When Google released its Flu Trends service earlier this week, the Drudge Report flashed a headline that read: “SICK SURVEILLANCE: GOOGLE REPORTS FLU SEARCHES, LOCATIONS TO FEDS.”

Google sought to avoid this kind of reaction by talking about how Google Flu Trends protects the privacy of its users. The service relies “on anonymized, aggregated counts of how often certain search queries occur each week,” Google said.

Still, the worries persist. On Wednesday, two advocacy groups, the Electronic Privacy Information Center and Patient Privacy Rights, sent a letter to Eric Schmidt, Google’s chief executive, raising privacy concerns: “The question is how to ensure that Google Flu Trends and similar techniques will only produce aggregate data and will not open the door to user-specific investigations, which could be compelled, even over Google’s objection, by court order or Presidential authority.”

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