Chat history is retained after participants close the chat window and until participants sign out. If you do not want to retain chat history after participants close the chat window, set the Disable_IM_History parameter to true. This parameter is available to all clients except IM-only users.
For on-premises deployment of Cisco Jabber for Mac, if you select the Save chat archives to: option in the Chat Preferences window of Cisco Jabber for Mac, chat history is stored locally in the Mac file system and can be searched using Spotlight.
Cisco Jabber does not encrypt archived instant messages when local chat history is enabled.
For mobile clients, you can disable local chat history if you do not want unencrypted instant messages to be stored locally.
For desktop clients, you can restrict access to chat history by savings archives to the following directories:
Windows, %USERPROFILE%\AppData\Local\Cisco\Unified Communications\Jabber\CSF\History\uri.db
Mac: ~/Library/Application Support/Cisco/Unified Communications/Jabber/CSF/History/uri.db.