they have "personal" and "public" modes.

"personal mode" is (extremely briefly) described:

"Information requested and retrieved in a Personal tab is not shared with anyone else. No record of your activity is recorded on BitTorrent. Use Personal tabs for logging into social media and other accounts. Also use them if you do not want to be associated on BitTorrent with any of your browsing activity in Ceno."

i wish the faq had even the tiniest bit of information on how this works, but it does not. they probably use their "injectors" to proxy the data or something. i am guessing it is discussed in more detail somewhere in the whitepaper (https://gitlab.com/equalitie/ouinet/-/blob/main/doc/ouinet-n...) but i dont have the time at the moment to read through it.