Have you run a virus scan lately? Nope? Don't need to, you say. That's because you run a Linux OS. Think again. To quote the title line of Bob Dylan's third studio album, "the times they are a-changin.'" Yes they are. And part of that change is the greater risk of malware attacks to the Linux operating system. It used to be that Linux was so iron-clad safe security-wise that virus intrusions did not exist. Used-to-be has now given way to possibly maybe. The rallying cry among security experts in the past was simply that using a Linux OS gave your built-in security by obscurity.