We are currently implementing "tenant restrictions" to limit the external Office 365 tenants accessible from a corporate worksations.
However, we don't know how to monitor the flows towards whitelisted tenants (to avoid unwanted data leakage):
- The proxy is not able to differentiate our tenant from other tenants (except for SharePoint with url tenant.sharepoint.com) for Exchange and Teams services
- I don't think that Office DLP for Endpoint is able to differentiate our tenant from other tenants
- Maybe Risk Insider Management ? (but what are the prerequesites in addition to the E5 licenses?)
- Maybe an other option ?
Thanks in advance