There do exist assets in the virtual worlds of online games which have to be protected. Our basis is the analysis of the participants, their assets and a threat analysis which is done for online games in general. This paper presents an adoption of this analysis to a real online roleplaying game called Second Life. After a general introduction we present our objectives of our research project about the security in Online Games. The Security Analysis Strategy we have evolved is introduced to the reader. In chapter 2 we specify our Research Interest. Then, in chapter 3 we give an introducing overview to the Massivly Multiplayer Online Roleplaying Game Second Life. Chaper 4 comprises the proof-of-concept of a general security analysis done by a case study of Second Life. Chapter 5 gives a conclusion and a future prospects.