The annotation org.jboss.security.annotation.SecurityDomain is present in the legacy security packages and documented in 7.1 Javadoc:

Annotation for specifying the JBoss security domain for EJBs.

Nevertheless this annotation doesn't work and the one from another package has to be used instead - org.jboss.ejb3.annotation.SecurityDomain.
Server doesn't log an error or warning when the legacy one is used.

Suggested fix:
Add a deployment processor which will log error when the legacy annotation is used in the deployment.

Another possibility how to fix this would be to add support for the legacy annotation too.

I'll create a separate JIRA for JavaDoc update in the legacy annotation class.