I never added a workgroup and my admin account is password protected. When I start my iMac, the spotlight says indexing WEND. I figured out that WEND is the workgroup pointing to some IP in China (218.93.250.18). I am afraid if someone is stealing my files or something. I tried to remove the workgroup but after deleting and saving changes, it reverts back to the same setting again. How do I know how this has happened in the first place and how do I remove the workgroup. Please advise.