Techniques for using a class loader to protect mobile code against a malicious host. The techniques include using the class loader to extend a class used by the mobile code such that a method is added to the code which authenticates the mobile code. When executed, the method provides a dynamic watermark...http://www.google.com.au/patents/US7877613?utm_source=gb-gplus-sharePatent US7877613 - Protecting mobile code against malicious hosts