You can now publish your OneNote notebooks on Docs.com. Now you can spread lesson plans, classroom projects and other educational resources through OneNote notebooks, and teachers and students all over the world can view, annotate, and reuse your notebook
I don't think Microsoft considers HIPAA and other security concerns when releasing new tools and/or features. Given that, we need to disable our users from being able to connect to our Office 365 tenant with their corporate account. I have the support art
For security purposes, we don't want our corportate network exposed externally. Users can have a personal account - that's not a concern.
The link I shared above has been included in this O365 Message as well:
We recently introduced a new service called Docs.com. Docs.com by Microsoft, is an internet site you can use to publish Office documents that anyone can find, browse or share. We are now adding administrator controls to enable and disable access to Docs.com for your users. [MC83764]