Russian data collection plans 'dangerous'

Snowden: Russian data collection plans 'dangerous'

He wrote on Twitter that the "Big Brother law" was an "unworkable, unjustifiable violation of rights that should never be signed".

Among the new rules are tough punishments for failing to report crime, or inciting terrorism online.

It must still be signed into law by Russian president Vladimir Putin.

Mr Snowden, a former contractor for the CIA, fled to Russia in 2013 after leaking details of extensive internet and phone surveillance by the US National Security Agency.