Despite warnings, @NSAGov built dangerous attack tools that could target Western software. Today we see the cost:
Hackers Hit Dozens of Countries Exploiting Stolen N.S.A. Tool
https://www.nytimes.com/2017/05/12/w...berattack.html

Ambulance staff at a National Health Service hospital in London on Friday. Several hospitals across Britain were hit by a large-scale cyberattack, causing failures to computer systems.