This week Brainwaves looks into cyber security and privacy and finds out about a new breed of spy that has emerged in today's connected world. Presenter Pennie Latin talks to one woman who was targeted by a hacker who broke into various online accounts, gaining access to her friends and family. We'll also hear from the new centre for cyber security at the University of Edinburgh where researchers are trying to find better ways to protect our data. Are we likely to be using passwords in the future, or will there be far more sophisticated ways of keeping our digital life safe? And just how careful is Pennie with her own data? An ethical hacker delves into her digital footprint.