The below is the site which i found useful
2)http://www.cs.princeton.edu/sip/pub/oakland-paper-96.pdf
3)http://www.users.zetnet.co.uk/hopwood/papers/compsec97.html
A Comparison between Java and ActiveX Security
4)http://www.cs.princeton.edu/sip/pub/sosp97.pdf
Extensible Security Architectures for Java
5)http://www.swiss.ai.mit.edu/~jbank/javapaper/javapaper.html
6)
http://www-106.ibm.com/developerworks/security/library/jw-0428-security/?dwzone=security hv fun