Rob Wainwright, Director of Europol

Stephen Sackur speaks to Rob Wainwright, head of the European police agency Europol. With people and businesses increasingly dependent on the internet and computing, they are more vulnerable than ever to cybercrime. 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. Are the cyber-crooks several steps ahead of the cyber-cops?