The rankings of what EU nations are snooped on, and how much, can be seen in a color-coded map of covert National Security Agency surveillance activities, EUObserver.com reported Monday.
Nations subject to the least spying activities are shaded green; those with the most red.
All EU members are various shades of green on the map. Germany is orange.
The map, called Boundless Informant, is among documents released by Edward Snowden, a former CIA employee and NSA contractor who says he is the person who this month leaked information about the U.S. metadata collection program known as PRISM.
About 3 billion pieces of metadata information were collected in a 30-day period, the map shows. That data includes calls made, location of the phone, time of the call and duration.
A handbook for the map says it uses "big data technology" to "produce near real-time business intelligence."
Boundless Informant "allows users to select a country on a map and view the metadata volume and select the details about the collection against that country," the handbook adds.