Moves by US President Barack Obama to rein in spies at the National Security Agency do not go far enough, a senior figure at Google has told the BBC.
David Drummond, the tech giant's chief legal officer, said the US needed to change its approach to intelligence to restore trust in the internet.
His comments are some of the first by a senior tech figure since a speech by the US president earlier this month.
They come as ex-NSA contractor Edward Snowden gave his first TV interview.
Mr Snowden, who has been in exile in Russia since leaking the information that lifted the lid on the scale of US and UK intelligence programmes, told Germany's public broadcaster ARD that the NSA practised "industrial espionage".