Update 25 August 2023

After further discussion here on JSWCLOUD-18778 – Comment restriction for team-managed (formerly next-gen) projects we've determined that these issues were not duplicates and this one does not refer to team-managed projects. Apologies for the confusion caused.

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Comments can be restricted in company-managed Jira Software and Jira Work Management projects.

Would the watchers of this issue be ok with me changing its title to "Ability to hide comment visibility on team-managed projects"? That way I could recommend that the existing watchers of JSWCLOUD-18778 – Comment restriction for team-managed (formerly next-gen) projects come and watch this instead. 

This is a serious security concern for us at John Deere as we have external partners using our Jira platform. If we cannot hide certain comments in certain projects for them, we really would have to re-consider our use of Jira

If you need any further information, please get in touch with me

We are moving to the Jira Cloud. We need this feature turned ON. On Jira Server platform, we use the "Default Comment Security" to hide some Issue comments from our external partners. Unfortunately, this plugin is not available on the Jira Cloud platform.

Agree - this seems an obvious option to be able to have. Please consider adding it.

This is greatly needed

At least there is an add-on for JIRA Server that would help,  there is no solution for setting a default visibility on JIRA Cloud.  We really need this.

All I need is another function here in the "Comments Permissions" section, titled "View Comments":

Then, I would limit this down so that my client cannot see the developers' comments on a ticket. Pretty please?

This feature is very useful when using JIRA Service Desk dedicated to customers. JIRA Service Desk is too restrictive (no way to show some of the comments), unless I am mistaken.

I have a question:
Using JS will only help to set a comment's security level when manually adding a comment on the ticket. What about comments which are automatically added, e.g. by mail handlers?

The old hacks don't work in JIRA 5 because it introduces the "quick edit" popup screens and uses new div names.

After way more fscking about than I should have to do, I've figured out how to do this for JIRA 5.1.4.

Add this to your announcement banner:

<script> (function($){ JIRA.bind(JIRA.Events.NEW_CONTENT_ADDED, function (e, context)

); })(AJS.$); </script>

And then add this if you don't have an announcement (ie. hide the banner itself):

<style> .alertHeader

</style>

Apologies for the single-line density but the comment field wouldn't let me use a nicer format.

Hope this helps someone else.