"All indications are that the attack on the editorial offices of satirical magazine Charlie Hebdo will provide a pretext for the introduction of further limits on our civil liberties - a new order the victims of which are unlikely to be terrorists … Independent analyses confirm that data inflation and the growing use of algorithms in intelligence work do not improve the effectiveness of threat detection.

Glenn Carle (Former Deputy National Intelligence Officerfor Transnational Threats at the CIA), Katarzyna Szymielewicz (President of the Panoptykon Foundation) and Robert Pritchard (Associate Fellow at the Royal United Services Institute and Founder of The Cyber Security Expert) comment on US debates on private and state internet surveillance.

Watch video (Al Jazeera)

Your online profile is not always built on facts. It is shaped by technology companies and advertisers who make key decisions based on their interpretation of seemingly benign data points: what movies you choose watch, the time of day you tweet, or how long you take to click on a cat video.