Hi there. Hopefully you will get a more detailed response soon, but here is the docs page on Logging for administrators in the meantime, if that helps.
Mary Cooch (personal account)
Mensagens colocadas por Mary Cooch (personal account)
How about Site administration>Security>Site policies>Force users to log in for profiles?
Do you have it enabled in Site administration>Advanced features and also do you have it enabled in the course settings?
Are you using groups? Perhaps you could post a screenshot of your settings in one of these forums?
I agree that currently it is not possible to hide something again once it has been revealed.