Office 365's tenant IDs

[Petri X]

Hi,

Just a newbie question.

Is there any risks to share the tenant and organization IDs to others? I'm just asking this because companies are using Teams more and more to meetings and on there both information are shared. So there is no big problem to start building a map between companies and what IDs they are using.

[#2]

Not that big of a risk, as anyone that knows your domain can get this information readily from various endpoints.

[#3]

That is actually a very true @Vasil Michev. I found actually this also: How do you find the tenant ID?

Organization ID is not videly visible, but perhaps there is no worries for that.