The application-extortionist WannaCry infected hundreds of thousands of computers around the world on the Windows operating system. After that, numerous experts began to investigate the question of how this could happen and how to avoid a repetition in the future.

Finnish company F-Secure claims that Russia and China suffered more than others from the extortionist. The reason for this is the popularity in these countries of pirated versions of Windows. Microsoft has closed the vulnerability used by WannaCry in the March Tuesday patches, so the updated systems Windows 7, Windows 8. 1 and Windows 10 from WannaCry did not suffer.

Because of the large number of old operating systems affected by the extortionist, Microsoft decided to release an update for unsupported versions of Windows XP and Windows Server 2003 that users are encouraged to install as soon as possible so as not to become new victims of WannaCry. But there is a problem: some users of pirated versions of Windows can not install updates even if they want to. Although there are ways to update pirated Windows, Microsoft periodically imposes various restrictions, so owners of some versions of the update are not available.

In addition to pirated versions, the unsupported versions of Windows were affected and those whose users had not installed the update for two months.