Robin Rinaldi, a magazine journalist living in San Francisco by way of Scranton, Pa., initially wasn’t sure she wanted children, but she knew that Scott, her stoic Midwestern husband, did not. Over time, Rinaldi decided a baby would add purpose to their lives, but Scott wouldn’t change his mind. “I wanted a child, but only with him,” she explains. “He didn’t want a child but wanted to keep me.” When Scott opted for a vasectomy, she demanded an open marriage.

Twenty-five years after the World Wide Web was created, the issue of surveillance has become the greatest controversy of its existence. With many concerned that governments and corporations can monitor people's every move, this programme meets hackers and scientists who are using technology to fight back, as well as the law enforcement officers who believe it's leading to opportunities for risk-free crimes.