What is WannaCry and how does ransomware work?
A global cyber attack has been underway since Friday, affecting more than 200,000 organisations in 150 countries. In the UK, the major assault hit 47 NHS trusts, leading to operations being cancelled and patients turned away from A&E. The "WannaCry" ransomware appears to have used a flaw in Microsoft's software, discovered by the National Security Agency and leaked by hackers, to spread rapidly across networks locking away files. A security expert managed to stop the attack by triggering a "kill switch" on Saturday but it has continued to wreak havoc. Ransomware, which demands payment after launching a cyber attack, has become a rising trend among hackers looking for a quick payout. View image on Twitter What is ransomware? R ansomware is a kind of cyber attack that involves hackers taking control of a computer system and blocking access to it until a ransom is paid. F or cyber criminals to gain access to the system...