“The government and corporate sector preyed on our ignorance. But now we know. People are aware now. People are still powerless to stop it but we are trying. The revelations made the fight more even.”

Edward Snowden has no regrets five years on from leaking the biggest cache of top-secret documents in history. He is wanted by the US. He is in exile in Russia. But he is satisfied with the way his revelations of mass surveillance have rocked governments, intelligence agencies and major internet companies.