A massive virus hit Europe and the United States which
hijacked computers and demanded bitcoin payment as ransom to free your
files. The tool used to hijack a
computer in such a fashion was created by the US government – the NSA. Somehow,
this tool was released/stolen by computer hackers.
The tool exploits known security vulnerabilities in the
Windows operating system. These
vulnerabilities were intentionally created by Microsoft to allow the government
spy agencies to gain access to computers around the world.
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