There are many in our community of extraordinary souls who do amazing things at the hardest of times. This is one of those stories. Thank you!
And because he tells the story so much better than I ever could, please read his blog post as linked here. You can copy and paste the URL provided in your browser to be extra safe.
https://www.malwaretech.com/2017/05/how-to-accidentally-stop-a-global-cyber-attacks.html