Microsoft is  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    with America's National Security Agency (NSA). Microsoft said the WannaCry  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    cyber-attack was because the NSA keeps cyber-weapons on its  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools   . Ransomware is a  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    software that blocks access to computers until the  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    pays money (a ransom) to the hackers. The NSA is a  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    intelligence organization. It helps America's  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    and information  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    to stay safe. It also stops cyber-attacks against the USA. However,  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    say the WannaCry ransomware used spying  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    that were designed by the NSA.  Microsoft said  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    must wake up to the problem of storing cyber-weapons. It said  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    can steal them and it was as dangerous as stealing  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools   . Microsoft's president said: "This attack provides yet another  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    of why [governments keeping these  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools   ]…is such a problem." Europe's police agency said WannaCry has affected 200,000 computers in 150  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools   . It made many problems for Britain's National Health Service. Many  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    were cancelled. Experts warned  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    to back up their  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    because more  angry attacks communications computers countries example experts files governments hackers harmful military missiles operations owner people ransomware systems things tools    could come.