Teams message encryption

Brass Contributor

Are my conversations and chats encrypted in any way?

7 Replies
Hi @Thomas_Steibl

See article

All data in Teams in encrypted in transit and at rest

Best, Chris

@Christopher Hoardthanks. I know this document but there is nowhere stated how the actual messages are encrypted. If they are end to end encrypted and using which protocol...

No worries. I get what you mean it is a bit vague. I have raised this with the product team and will get back to you as soon as I hear from them with an authoritative response.

Best, Chris

Any updates regarding this matter @Christopher Hoard ?

None currently. It's a bit of a mad time given MVP Summit and the growth in usage of Teams causing some scalability related issues. It may take some time for them to get back to me.

Best, Chris

@Christopher Hoard 


Is the video chat encrypted?



Teams chat is not encrypted at rest by default. It is encrypted in transit (TLS)



To have encrypted chat you need Customer Key



Even when using Teams Premium's end-to-end encryption the chat in the meeting is not encrypted