It was the day his life changed forever. When Edward Snowden blew the whistle on mass surveillance by the US government, he traded a comfortable existence in Hawaii, the paradise of the Pacific, for indefinite exile in Russia, now a pariah in much of the world.
But 10 years after Snowden was identified as the source of the biggest National Security Agency (NSA) leak in history, it is less clear whether America underwent a similarly profound transformation in its attitude to safeguarding individual privacy. Was his act of self-sacrifice worth it – did he make a difference?
