The Californian telecoms company behind a stunning legal victory that has blown a hole in the FBI's highly secretive system for collecting US citizens' private data has come out of the shadows for the first time and revealed its identity.

Credo, based in San Francisco, said it was speaking out for the first time after a federal judge ordered the US government to stop issuing what are called "national security letters" – demands for data that contain in-built gagging clauses that prevent the recipients disclosing even the existence of the orders or their own identity.

Read the whole story at The Guardian