Already this year we have watched a number of high-profile cyber-attacks unfold with disastrous consequences, proving that what the security industry has been doing to date isn't working. So it's no wonder that the cyber security industry has become a hotbed of innovation, churning out creative products designed to outsmart would-be attackers. It's a booming industry with exciting start-ups and innovative technologies emerging left right and centre all claiming to be the next "silver bullet" of cyber defence. We've had a look at these newest players and pulled together our pick of the five hottest technologies in cyber security.