Can privacy be dialled in to the digital world? John Leonard investigates the resurgence of an concept and why it is happening now
Michael Chertoff argues preventing criminals communicating is 'a pipe dream' and backdoors would just make ordinary users less secure
'I want to challenge Prime Minister Cameron to listen to 15 of the world's top cryptographers - what you are asking for is not possible,' says Privacy by Design inventor Ann Cavoukian