Okay folks, we had a reader report in that they have found over 3000+ exposed OctoPrint (thanks Kalaiarasu!) [1]. This web server, by default, binds to port 5000 and the access controls [2] do not seem to have much in the way of restricting access, except by user. If you have one of these running, do yourself a favor and check for internet facing exposure.
Article Link: https://isc.sans.edu/diary/rss/24038