O365/M365/Azure Self-service reset and GAL

Hi,

Been googleing around and can't find an answer to my questions. Maybe you guys can help out.

1. Authentication contact Info (for PW resets etc.) in Azure/O365/M365, are the details held within this section exposed to the GAL?
2. Is there a way to force users to re-enter their Authentication contact Infodetails?

Thanks in advance for any help :-)