what was the virus name exactly? It could have been a false positive or a spoof email that didn't come from the forum at all. When someone uses this forum's email function there is no option to upload a file that a virus could be wrapped in. Howerver there is spyware and malware that can record things you see or simply make up official looking emails that contain malicious programs. Is this even a user you recognize? Have you done a search to see if its even a real user? Don't jump to conclusions just yet