Canada's electronic spy agency has been intercepting data on up to 15 million file downloads a day as part of a global surveillance program, according to a report published on Wednesday. The program, nicknamed Levitation, has included allied countries and trading partners such as the United States, Britain, Brazil, Germany, Spain and Portugal, the report by CBC News said.

The spying initiative was revealed in 2012 documents obtained by U.S. whistleblower Edward Snowden.

CBC said the Communications Security Establishment (CSE) surveillance program has netted the agency 350 "interesting download events" each month.

The Snowden documents show the agency has sifted through 10 million to 15 million uploads a day of videos, music documents and other files hosted by 102 file-sharing websites.