The encryption for Chatter pilot continues to protect sensitive
information in your Chatter feed. We added link URLs and poll choices to the body of encrypted
content. Encryption for Chatter isn’t ready for production, but you can safely try it out in a
dedicated sandbox environment.
This feature is available in Lightning Experience,
Lightning communities, Salesforce Classic, and all versions of the Salesforce1 mobile
In addition to the new fields, encryption for Chatter encrypts feed posts, questions and
answers, link names, comments, and poll questions. Encryption for Chatter is an all-or-nothing
encryption in that you can’t choose to encrypt some fields but not others.
To encrypt the new fields, from Setup, enter Platform Encryption in
the Quick Find box. Then deselect and reselect Encrypt