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Question regarding guest access security

%3CLINGO-SUB%20id%3D%22lingo-sub-307099%22%20slang%3D%22en-US%22%3EQuestion%20regarding%20guest%20access%20security%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-307099%22%20slang%3D%22en-US%22%3E%3CP%3EI%20recently%20started%20using%20Office%20365%20and%20Teams%2C%20so%20my%20working%20knowledge%20of%20both%20is%20rather%20limited.%20Recently%2C%20I%20set%20up%20an%20outside%20lawyer%20to%20have%20guest%20access%20to%20one%20of%20our%20team%20sites.%20She%20asked%20how%20She%20would%20know%20that%20accepting%20the%20invite%20would%20not%20allow%20us%20to%20have%20access%20to%20her%20general%20Outlook%2C%20etc.%20files%20and%20information.%20I%20have%20not%20been%20able%20to%20find%20any%20information%20that%20addresses%20the%20security%20that%20protects%20the%20outside%20firm%20from%20unauthorized%20access%20by%20us.%20I%20realize%20we%20do%20not%20have%20that%20kind%20of%20access%2C%20but%20I%20need%20something%20other%20than%20my%20word%20to%20give%20her%20and%20her%20firm.%20Does%20anyone%20know%20where%20I%20might%20find%20that%20information%3F%20Thank%20you.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-307099%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EGuest%20Access%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-307103%22%20slang%3D%22en-US%22%3ERe%3A%20Question%20regarding%20guest%20access%20security%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-307103%22%20slang%3D%22en-US%22%3EIt%20says%20in%20the%20pop%20up%20that%20says%20allow%20your%20org%20to%20trust%20their%20org%20credentials%20etc.%20etc.%3CBR%20%2F%3E%3CBR%20%2F%3EYou%20can%20find%20more%20information%20here%20in%20the%20B2B%20Azure%20AD%20section%20as%20this%20is%20the%20technology%20the%20Teams%20guests%20use.%3CBR%20%2F%3E%3CA%20href%3D%22https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fazure%2Factive-directory%2Fb2b%2Fredemption-experience%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fazure%2Factive-directory%2Fb2b%2Fredemption-experience%3C%2FA%3E%3CBR%20%2F%3E%3CBR%20%2F%3EIt%20includes%20a%20link%20so%20you%20can%20also%20include%20your%20own%20personal%20privacy%20terms%20etc.%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-307102%22%20slang%3D%22en-US%22%3ERe%3A%20Question%20regarding%20guest%20access%20security%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-307102%22%20slang%3D%22en-US%22%3EHi!%20As%20you%20wrote%20yourself%2C%20inviting%20someone%20to%20your%20tenant%2C%20does%20NOT%20grant%20you%20any%20access%20to%20anything%20regarding%20the%20invited!%20I%20really%20don%E2%80%99t%20know%20what%20to%20give%20you%20except%20the%20official%20documentation%20from%20Microsoft%20regarding%20the%20guest%20feature%20in%20Teams!%20There%20is%20everything%20going%20on%3A%3CBR%20%2F%3E%3CBR%20%2F%3E%3CA%20href%3D%22https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fmicrosoftteams%2Fguest-access%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fmicrosoftteams%2Fguest-access%3C%2FA%3E%3CBR%20%2F%3E%3CBR%20%2F%3EAdam%3CBR%20%2F%3E%3C%2FLINGO-BODY%3E
MarkS1957
Visitor

I recently started using Office 365 and Teams, so my working knowledge of both is rather limited. Recently, I set up an outside lawyer to have guest access to one of our team sites. She asked how She would know that accepting the invite would not allow us to have access to her general Outlook, etc. files and information. I have not been able to find any information that addresses the security that protects the outside firm from unauthorized access by us. I realize we do not have that kind of access, but I need something other than my word to give her and her firm. Does anyone know where I might find that information? Thank you.

2 Replies
Solution
Hi! As you wrote yourself, inviting someone to your tenant, does NOT grant you any access to anything regarding the invited! I really don’t know what to give you except the official documentation from Microsoft regarding the guest feature in Teams! There is everything going on:

https://docs.microsoft.com/en-us/microsoftteams/guest-access

Adam
It says in the pop up that says allow your org to trust their org credentials etc. etc.

You can find more information here in the B2B Azure AD section as this is the technology the Teams guests use.
https://docs.microsoft.com/en-us/azure/active-directory/b2b/redemption-experience

It includes a link so you can also include your own personal privacy terms etc.
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