I wonder if most of the targets are still running Windows 7 and older? I know Win 10 isn’t totally immune, but if you enable all the security options it’s harder to penetrate. Am I wrong?
That was back in the summer of 2014 – googling it now, I see that XP's official death date was April 8, 2014, and that Windows 7's death date was extended from Jan. 2015 to Jan. 14, 2020. [0]
My mom still keeps a Windows XP laptop around (and I've done my best to make sure she never actually uses it, including getting her a Macbook) because she never figured out Win10. And she was a com sci major and worked on mainframes, so I'm biased to think most tech-focused businesses who moved to Win7 have not jumped to Win10 sooner than they absolutely need to.
[0] https://support.microsoft.com/en-us/help/13853/windows-lifec...