In order to run online on-demand courses for non-students, we have to enable open registration. This makes us vulnerable to spam users and, since March, we have been attacked repeatedly with spam user accounts. They don't do anything in Canvas, just create accounts.
When we reached out to Canvas, besides disabling open registration (which isn't an option for us), they provided no other solutions. There was a similar spam issue with Catalog and a CAPTCHA has now been implemented there. It's possible that a CAPTCHA could be added to the log in page as well, but it is not definite and there is no project completion date for it.
I was wondering if anyone else has been this issue with spam users recently. If so, has anyone come up with a workaround to prevent more spam users? I know it might be a no go but figured I'd throw it out there to folks that might be better coders than I am!