If you search on google on DummyResourceAdapter, you'll find (at least currently) a lot of open administration consoles of JBoss, the JMX-console. These consoles should not be available to the open internet, but I guess someone forgot the close them.

Take for example the console of the website called www.ccidgroup.net: what would happen when you hit destroy button on the MBean Inspector of the ROOT.war ?

JMX MBean View

MBean Name:	Domain Name:	jboss.management.local
	name:	ROOT.war
	J2EEServer:	Local
	J2EEApplication:	jbossweb-tomcat55.sar
	j2eeType:	WebModule
MBean Java Class:	org.jboss.management.j2ee.WebModule

...

destroy

I haven't tried and I've sent a mail to webmaster@domain - but I'm slightly curious.