Jira does not come with any predefined issue security schemes, so you will have to create your own from scratch. Perform the following steps to create a new issue security scheme:

1. Browse to the Issue Security Schemes page
2. Click on the Add Issue Security Scheme button
3. Enter a name and description for the new scheme
4. Click on the Add button to create the new issue security scheme

Since an issue security scheme does not define a set of security levels like a permission scheme, you will need to create your own set of security levels right after you create your scheme.