I have a security problem. There's no sane way to fit it into one question. So I might be providing too little information or too much: Vista32(sp2) - Spyware Doctor, Norton, Malwarebytes - was not using a router (I am now) - early port scans were clean - later scans showed open port tcp 9000. Do you know of any current malware that has an affinity for tcp 9000? What current applications use this port legitimately? Last week, tcp 9000 was very active. I was able to get some screen shots. Since adding the router, 9000 is unusually quiet. I am a home user and do not have formal IT education. I appreciate your help.