After almost 2 years, Putty got update and security vulnerabilities have been patched in the new version. You are using Secure Shell to be sure about security, so update your SSH client to the new version.
Windows 2008 was born on February 2018 and Microsoft released Windows 2008 R2 on October 2009. I think, Windows 2008 R2 was one of most popular Windows servers in history.
Now, Windows 7, Windows 2008 and Windows 2008 R2 are old men. We have to say goodbye to these guys in this year and next year.
Microsoft has published updates for supported versions of Windows. Windows 10 and Windows Server 2019 have update but there is no new feature. Windows Server 2016, 2012 R2, 2012 and 2008 also have same situation. Let’s review that what is fixed in the new updates at January 8, 2019.