I was using Ubuntu 14.04 and also 14.04.03. I ran Malwarebytes on it and was surprised to see several Trojans and backdoors on the PC. First, I thought that it was something that happened because of me. But getting suspicious, I checked my Zorin 9 installation, and to my surprise, it had several Trojans and backdoors as well. I used Malwarebytes to find these as well. The last system was hardly used. This makes me think that the image was infected when I got it. Could it be that the distros are distributed with malware, or are those just false positives?