Metcalfe's law is effectively at work when it comes to Cyber Security. By working together across industries we can emulate this law, just like the cyber bad guys do and have the law work in our favour, as it certainly is working against us through the combined forces of cyber criminals, nation estates and hacktivists. Aernout Reymer, Head of Security at BT Global Services discusses the latest trends and the future in cyber, and comes with ideas to collaborate, join forces and reduce costs and time in dealing with vulnerabilities.