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Analysis of Google Logs Retention Policies

June 15, 2011

This paper refers to Google Search and Google Suggest log retention policies and shows that even with the highest degree of anonymization that Google offers, one could separate user queries with a high granularity. Because Google Suggest is queried every time a user types a character in the Google Chrome navigation box, the privacy of Chrome users could be compromised with respect to their browsing histories. Such ambiguities within log retention policies are critical and should be addressed, as anonymized logs could be shared with third parties without user consent.

Source Analysis of Google Logs Retention Policies

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