This paper introduces a complementary extension to XML data binding enabling the (selective) protection of structured objects and members. By this contribution, an object can be transformed into a secured object which contains encrypted and/or signed parts according to an assigned security policy. The serialization of secured objects results in XML data which is protected by standard XML security means. Thus, this approach introduces a data-oriented security mechanism which seamlessly integrates into XML data binding and therefore enables cross-platform (de)serialization of secured objects without the need of programming against a specific XML security API. Distinct entities in a distributed processing environment then operate transparently either on plain or secured instances of a class.