According to the reports of New York Times, An important component of the malware to disrupt U.S cities, paralyzing local governments and residents was developed by the National Security Agency (NSA).
Reportedly, NSA lost the control of the tool in 2017, it was called Eternal Blue.
Eternal Blue has been used around the world including countries like Russia,China,North Korea and it has affected huge numbers of ATMs, hospitals, Airports, shipping operators around the globe.
Recently there was high-profile ransomware attack on Baltimore in which computers were hacked and health alerts, water bills, real estate sales and other public services are disrupted.
On May 7th, city’s workers computers screens were locked and were displayed a message of ransom demanding $100,000 to free city’s files.
In the similar manner various U.S cities have been attacked.
The NSA and FBI declined to comment to the Times, but according to the reports the theft of the EternalBlue was carried out by group, which calls itself the Shadow Brokers.
The group is either made up of disgruntled federal employees or foreign spies.