WannaCry

The article says America's NSA is angry with Microsoft.

America's National Security Agency has cyberweapons on its computers

Ransomware means people must pay hackers to access their files.

The WannaCry hackers used spying tools first created by the NSA.

Microsoft's president said governments needed to wake up.

Brad Smith said governments storing cyberweapons isn't dangerous.

The WannaCry ransomware affected over 250,000 computers

Experts said the wave of attacks was now over.