Facebook could become a threat to democracy without tougher regulation, the former head of intelligence agency GCHQ has said.
Robert Hannigan told the BBC the social media giant was more interested in profiting from user data than “protecting your privacy”.
It comes after MPs this week accused Facebook of striking secret deals over user data.
The firm has also been criticised for its handling of fake news.
In an interview with BBC Radio 4’s Today programme, Mr Hannigan said: “This isn’t a kind of fluffy charity providing free services. It’s is a very hard-headed international business and these big tech companies are essentially the world’s biggest global advertisers, that’s where they make their billions.
“So in return for the service that you find useful they take your data… and squeeze every drop of profit out of it,” he said.
Asked if Facebook was a threat to democracy, Mr Hannigan said: “Potentially yes. I think it is if it isn’t controlled and regulated.
“But these big companies, particularly where there are monopolies, can’t frankly reform themselves. It will have to come from outside.”