I have been playing around Alfresco 1.0 about 3 weeks, it's pretty cool design! I am little bit concern about the code level security, and it’s crucial for application integration. The code level security can only apply to the proxyed services, and there is no way to prevent third parties which deployed in the same JVM from messing up by accessing or instantiation the target service, or bypass all the security check which applied by Spring Framework.