You actually believe that an intruder gained access to their KB/Tickets and didn't manage to get valuable information? That's not what Jira is for. If you know

You actually believe that an intruder gained access to their KB/Tickets and didn't manage to get valuable information? That's not what Jira is for. If you know what Jira is for, and you're willing to run it on-prem, then you know the purpose of doing all that work is because you have something valuable to store in there. I don't believe they didn't lose anything. That's not how this works, and most Jira/Confluence I've seen is loaded with secrets.