Stanford computer scientists show telephone metadata can reveal surprisingly sensitive personal information

 » Stanford researchers show that telephone metadata – information about calls and text messages, such as time and length – can alone reveal a surprising amount of personal detail. The work could help inform future policies for government surveillance and consumer data privacy. (…)

The researchers set out to fill knowledge gaps within the National Security Agency’s current phone metadata program, which has drawn conflicting assertions about its privacy impacts. The law currently treats call content and metadata separately and makes it easier for government agencies to obtain metadata, in part because it assumes that it shouldn’t be possible to infer specific sensitive details about people based on metadata alone. (…) »