Cybersecurity stocks boom after ransomware attack

Companies see share prices rise sharply amid expected increase in spending on IT security after WannaCry hack

The ransomware attack that disrupted the NHS and businesses around the world has led to a boom in share prices of cybersecurity companies - including the firm used by the health service to protect it against hackers.

With governments and companies expected to increase spending on IT security after being caught out by the attack, cybersecurity firms have seen their stock market values climb sharply over the past two days.