Customers wtth no access to confluence gain systematic access

Question

Hello,
I created an organization, I added a customer to it.
He has no access to confluence and so not part of defalt confluence users group.

Once the customer connected to Jira SM , and switching to Confluence he gain access to the  product and becomes part of the defalt confluence users group. 
in the admin users management section I can see the confluence product tagged and group added without my permission.

So strange behaviour, I didnt face with free version (pilot phase)

How did customers gain systematically access to Confluence with Add/delete rights ?
Aren't they supposed to just view contect only as anonymous users in this case ?

Regards,

Houcem

Tessa Tuteleers · Accepted Answer

Good afternoon @Houcem Eddine Ben Kraiem ,

you should check your product access settings (to which groups and products new users get access by default) using this documentation. 
I guess you have added the confluence-users group as a default group, which gives access to Confluence.

Let me know if this is not the case!

- Tessa