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A Guardian guide to your metadata

In the wake of the Snowden revelations on mass surveillance by the NSA, the Guardian published a guide to help you understand metadata.

The Obama administration's initial reaction following the leaks about NSA surveillance was to assert that the US government was only storing metadata. But this term was often left undefined, preventing the many citizens unfamiliar with the term from making informed decisions.

With this interactive guide, The Guardian explains what metadata is, and how much it reveals about you. Choose the services you use each day (email, phone, camera, Facebook, Twitter, Google Search, web browser) and find out what the US government can learn about you based on metadata alone.

The guide also contains a section on what metadata looks like, and a case study on how the FBI used Petraeus's metadata to expose his infidelity.