Microsoft said the WannaCry ransomware happened America's National Security (NSA) stores cyber-. Ransomware is that blocks until the pays money to . The NSA helps to stop cyber-attacks. Microsoft said the WannaCry hackers used spying from the .
Microsoft said must wake up to the of keeping cyber-weapons. They are as as . Europe's said WannaCry hit 200,000 computers in 150 . It made many problems for in Britain. Microsoft told to back up their . It said attacks could come.