As per my findings, the security:require attribute in the configuration indicates if security is enforced when accessing items. It typically specifies that certain security conditions must be met for the associated functionality to be accessible or executed. This ensure that only users with the appropriate permissions can execute this pipeline or processor.
Here are some examples.
<securityEnabled security:require="Sitecore">true</securityEnabled><securityEnabled security:require="None">false</securityEnabled>Hope this helps.
