Crossbench senators have voiced their concerns about proposed cyber security laws that would compel phone companies and social media services to embed spyware in their customer's phones and accounts on behalf of intelligence and law enforcement agencies.

"The bill is a draconian measure to grant law enforcement authorities unacceptable surveillance powers that invade Australians’ civil rights," said Liberal Democrats Senator David Leyonhjelm.

Liberal Democratic senator David Leyonhjelm. Credit:Andrew Meares

"It appears that people who are not even suspected of committing a crime can face a fine of up to $50,000 and up to five years’ imprisonment for declining to provide a password to their smart phone, computer or other electronic devices."

Senator Rex Patrick of the Centre Alliance Party, criticised the lack of oversight and controls that go with the powerful new surveillance tools being handed to these authorities.