<P> WannaCry propagates using EternalBlue , an exploit of Windows ' Server Message Block ( SMB ) protocol . Much of the attention and comment around the event was occasioned by the fact that the U.S. National Security Agency ( NSA ) had already discovered the vulnerability , but used it to create an exploit for its own offensive work , rather than report it to Microsoft . Microsoft eventually discovered the vulnerability , and on Tuesday , March 14 , 2017 , they issued security bulletin MS17 - 010 , which detailed the flaw and announced that patches had been released for all Windows versions that were currently supported at that time , these being Windows 7 , Windows 8.1 , Windows 10 , Windows Server 2008 , Windows Server 2012 , and Windows Server 2016 , in addition to Windows Vista ( which had recently ended support ) . However , many Windows users had not installed the patches when , two months later on May 12 , 2017 , WannaCry used the EternalBlue vulnerability to spread itself . The next day , Microsoft released emergency security patches for Windows 7 and Windows 8 . </P>
<P> WannaCry propagates using EternalBlue , an exploit of Windows ' Server Message Block ( SMB ) protocol . Much of the attention and comment around the event was occasioned by the fact that the U.S. National Security Agency ( NSA ) had already discovered the vulnerability , but used it to create an exploit for its own offensive work , rather than report it to Microsoft . Microsoft eventually discovered the vulnerability , and on Tuesday , March 14 , 2017 , they issued security bulletin MS17 - 010 , which detailed the flaw and announced that patches had been released for all Windows versions that were currently supported at that time , these being Windows 7 , Windows 8.1 , Windows 10 , Windows Server 2008 , Windows Server 2012 , and Windows Server 2016 , in addition to Windows Vista ( which had recently ended support ) . However , many Windows users had not installed the patches when , two months later on May 12 , 2017 , WannaCry used the EternalBlue vulnerability to spread itself . The next day , Microsoft released emergency security patches for Windows 7 and Windows 8 . </P>
which major u.s. company was attacked by the wannacry randsomware
which major u.s. company was attacked by the wannacry randsomware
Microsoft
Microsoft