OneDrive for Business customers -- including mine -- have spoken and Microsoft has listened. New features recently rolled out include the ability to limit ODFB file synchronization to computers joined to your domain(s). The new cmdlet,

Set-SPOTenantSyncClientRestriction

ensures that ODFB files aren't left behind inadvertently on machines you can't manage. This new restriction also could be part of your strategy for preventing intentional data leakage. Full syntax is on TechNet.

Additionally, Microsoft announced new auditing features, and the elimination of the bothersome, default "Shared with Everyone" folder. Also check out this TechNet article on reigning in some of the sharing defaults for ODFB and SharePoint Online sites.