From the hacking of the US and French elections, to the WannaCry ransomware attack - we assess cyber threats.



Garry Kasparov, the former chess world champion turned Russian opposition political activist, explains the Kremlin's motivation in interfering in other countries' democracies, and what he thinks the West should do about it.



Meanwhile cyber-security entrepreneurs James Chappell of Digital Shadows and Poppy Gustafsson of Darktrace explain why they are offering businesses entirely new lines of defence against online infiltration by criminals. And hacking expert Professor Alan Woodward of Surrey University explains what lessons should be drawn from the recent WannaCry attack.



(Picture: The screen of a computer infected by ransomware ; Credit: Damian Meyer/AFP/Getty Images)