When running the screenshot.js on https://try-puppeteer.appspot.com/, a web based Puppeteer.js I the image produced was of a gaming/gambling website, not my website at all!
My site was https://puppet.azurewebsites.net/custEvntSingle.html now https://puppet.azurewebsites.net/puppeteer/soEvntSingle.html and is just a couple lines of html for testing js with puppeteer.
This possible breach looks sort of like the shared hosting 'container' breeches of bygone years. But is it really one? I guess the try-puppeteer server could also be to blame? Wondering whether this is an indication of security problem that may have a serious impact? What's the best way to figure out where the breech occured?