restrict certain strings from comments in Jira Service desk

[Yessica Lizbeth Izquierdo Llanos]

Hello, we have a customer that due to compliance requirements needs to restrict certain strings (credit card numbers) to be entered into Jira Service Desk.
We have been able to use validators to restrict this on input fields. But we have not been able to find a way to implement this for comments.
We tried listeners but since the data is already saved, even if update by the listener, original data is still viewable on the "Activity tab" of the issue.
Is there a way to extend Jira Service Desk to intercept this stings and either replace or delete it before they are saved.

[Aaron Williams]

Any action is saved as you described in the Activity tab, and you should bear in mind there would be Audit logs in the system as well.

One idea is: you could implement Security Levels and restrict the view functionality to a select few when the listener recognises a string, sending out an alert for manual intervention (Issue Security Level)

Another idea is: you could work around the activity log on the issue by cloning the issue and deleting the original one; the activity log won't transfer and the data is no longer appearing.

Besides this I believe there is no out of box functionality to handle this, and I'm not aware of any add-ons that could work in this way.