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Clarify the meaning of "public rooms" for presence (#2108)

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Johannes Marbach 2025-05-13 16:11:50 +02:00 committed by GitHub
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changelogs/client_server/newsfragments/2108.clarification Normal file
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"Public" rooms with respect to presence are defined through their join rule.

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content/client-server-api/modules/presence.md
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@ -68,5 +68,7 @@ will cause the server to automatically set their presence to `online`.
#### Security considerations
Presence information is shared with all users who share a room with the
target user. In large public rooms this could be undesirable.
Presence information is published to all users who share a room with the
target user. If the target user is a member of a room with a `public`
[join rule](#mroomjoin_rules), any other user in the federation is
able to gain access to the target user's presence. This could be undesirable.