You can't. The fields are text, if someone puts something sensitive in them, that's up to the user.
The only thing you might be able to do is write or find a validator which can scan the text and return a failure message if they enter something you don't wnt them to. Of course, what they might enter is so variable, I don't think you really can do this, but that is your only real option.
One other option is to use our recently released PII Protector for JIRA add-on. It monitors sensitive PII like credit card numbers, social security numbers, addresses, etc. stored in Atlassian JIRA, reports it, provides admins with a convenient UI to manage it, to audit access to it, and optionally to hide or to erase it.
Hey Atlassian community, I help lead engineering at Sentry, an open-source error-tracking and monitoring tool that integrates with Jira. We started using Jira Software Cloud internally last year, a...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs