An .exe file sitting in my hard drive is suspected to be a trojan or some kind of malware . I think it is a trojan or malware of some kind. To be precise, here is what ewido tells me what it is : Backdoor.Agent.agu The question is: If I do not double click it , if I leave it alone , will it pose any threat? Does it make any difference if it is a trojan and not other types of malware? Thank you very much for viewing and answering. As you can tell, I am pretty clueless about computer.