Security considerations when recording meetings

[Jakob Rohde]

Our Board of Directors have started using Teams for Board meetings, and they have requested information about how recordings are being managed and stored. They need to 100% sure that only meeting participants have access to the recordings and that, when the recoding is deleted, it is in fact completely deleted - in an unrecoverable fashion. So I am looking for detailed documentation and any information you guys can provide.

Thanks. 

[#2]

@Jakob Rohde Hello Jakob, I believe this will answer a lot of your questions https://docs.microsoft.com/en-us/microsoftteams/cloud-recording

[#3]

Thanks @ChristianBergstrom. I have seen that article and I was hoping for more details. One question I don't feel is properly answered is, whether it is possible to ensure that not even Global Admins can access the recording, e.g. via eDiscovery. Also, it says in the article "If the recording doesn't get uploaded to Stream, it's stored in Teams cloud storage, where it's available for download for 20 days". What does that mean? Where is "Teams cloud storage" exactly? And why wouldn't it get uploaded to Stream?  

[#4]

@Jakob Rohde I believe you can always expect that global admins have access or can give themselves access to everything in the tenant. That is one of the reasons why you should not have global admins permissions on normal user accounts but instead on specific service accounts.

[#5]

@Jakob Rohde Hello, Teams data is stored in Azure. In addition to the previous link, these will answer your supplementary questions (?)

Location of data in Microsoft Teams

https://docs.microsoft.com/en-us/microsoftteams/location-of-data-in-teams

Permissions and privacy in Microsoft Stream

https://docs.microsoft.com/sv-se/stream/portal-permissions