There are two presentations at the next JBoss World in Las Vegas http://www.jbossworld.com that are related to Security.
One is on JBoss Security and the other is on JBoss SSO.
Please have a look at the agenda for Wednesday and Thursday of JBW.
http://www.jbossworld.com/agenda_events.htm#wed
There is still time to register, to participate in this conference.