Are the cyber-crooks several steps ahead of the cyber-cops? Hardtalk's Stephen Sackur speaks to Rob Wainwright, head of the European police agency Europol. In every aspect of our public and private lives we have become increasingly dependent on the power of the internet and computing. That makes us vulnerable to those who would do us harm. One such example is the worldwide spread of the ransomware known as WannaCry which has shut down vital computer systems in businesses, and public institutions around the world.

(Photo: Rob Wainwright at a hearing for the March 22 Brussels terror attacks, 2016. Credit: Aurore Belot/AFP/Getty Images)