A massive cyberattack that hit over 74 countries across Europe and Asia and led to major breakdowns in England's NHS hospitals Friday involved a type of malware that is used by the National Security Agency, called ransomware, according to The New York Times.
The ransomware was leaked by a hacker crew called Shadow Brokers, which has been leaking NSA hacking tools for the past year. Microsoft has since developed a better protection system to strengthen the NSA tool, but the hackers discovered that certain places, like NHS hospitals, hadn't updated their software yet.
The targets, which were all hit with the same type of ransomware, were reported in over 12 countries — including the U.K., Spain, Portugal, Russia, Turkey, Vietnam, the Philippines, and Japan. Hospitals and telecommunications companies were among the most common institutions affected.