Tech Tent 54: Hacking and security special

Hacking is making headlines like never before - whether it's done by activists pushing a cause, criminals stealing money, or governments covertly waging electronic war - the threat is centre-stage. We speak to Dr Gabriella Coleman of McGill University, Montreal, Canada on who the hackers are and how their profile is changing.

Cybersecurity expert Professor Alan Woodward of the UK's Surrey University helps us analyse the threat from criminal and state-sponsored hackers.

Also, does this week's unveiling of Windows 10 and a host of whizzy associated technologies suggest a new, more daring Microsoft than we've seen in recent years?

Presented by Rory Cellan-Jones, with Dave Lee and Mark Ward from the BBC Online tech desk.