The technology company Microsoft is angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet with America's National Security Agency (NSA). Microsoft said the WannaCry ransomware cyber- angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet happened because the NSA keeps lots of cyber-weapons on its angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet . Ransomware is a type of angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet software that blocks access to a computer until the angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet of the computer pays money (a angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet ) to the hackers. The NSA is America's angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet intelligence organization. It helps to keep America's communications and information systems angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet . It is also responsible for stopping cyber-attacks against the USA. However, angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet say the WannaCry ransomware used computer spying tools angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet designed by the NSA. Microsoft president Brad Smith said governments needed to wake up to the angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet of storing cyber-weapons that hackers can steal. He said it was as big a angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet as someone stealing angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet from the USA. When talking about the WannaCry attack, he said: "This attack provides angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet another example of why the stockpiling of [these things] by governments is such a problem." The European angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet agency Europol said WannaCry has affected 200,000 computers in 150 angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet . In the UK, WannaCry caused many problems with the work of Britain's National Health Service. Many angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet were cancelled. Experts warned people to back up their angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet because a angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet wave of angry attack attacks computers countries experts files harmful military missiles operations originally owner police problem ransom safe second yet could come.