When were online, most of us choose to give up our privacy for the sake of convenience. With all our personal data potentially flying around on the internet, how do most of us stay as safe as we do? Sociologist Angus Bancroft reckons that we owe it to the criminal underbelly of the internet " the darknet. This subculture of anonymous geeks and drug dealers takes great pains to remain hidden using encryption technology. Their innovations help us all stay anonymous and safer, reducing drug-related crime and fraud. Will Angus make you think differently about cybercrime?