I found out today that a person named Neha Ghuraiya has Admin rights on one of my Confluence Space.
Find attached a screenshot of the space permissions.

I do not know this person. After a quick search, it seems to be an Atlassian engineer (her LinkedIn profil here).
I am seriously worried that anyone from Atlassian could get into my Confluence content, showing at serious lake of respect of privacy.
It is not the first time I see this. Few weeks ago I saw the same thing in another of my Confluence Space. At that time I just fixed the permissions, and took no screenshot neither did I report it. But I think this was the same person.
I did not yet go through all my Confluence Spaces to see if other Spaces are "infected". I only checked few.
This bring me to a serious question: how private is the content of Confluence?...