Hi team, Instructables.com Product Manager here. We have a few embedded Arduino Create modules in our free Arduino Class (lessons 2 and 3).
Recently while testing an unrelated site issue, we discovered Arduino Cloud making requests to find an open port on 127.0.0.1. It looks malicious to us, sending over 9000 requests and significantly slowing down the page.
See the attached images showing the requests on pages with and without the embedded Arduino Create module.
The class was published over a year ago, so I can't say for certain how long this has been going on. Thanks for looking into it!