Every action and security breach will be take the following actions and procedures to be documented and communicated to Atlassian.
This is the document to be filled with all the information and send to Atlassian: deiser-atlassian-notification-form.numbers
Communication to Atlassian will be done via an 'Add-on Security Incident' ticket https://ecosystem.atlassian.net/secure/CreateIssue.jspa?pid=17070&issuetype=11400