Windows or Linux?

Be sure that you consistently maintain and update source network inventory for all the applications on every system in your network, regardless of the OS you use. There seems to be a pervasive belief today that Windows is full of security holes whereas Linux is secure, but this belief primarily stems from the lack of mobile and desktop Linux configurations (and hence a much lower incidence of Linux-based security problems on those systems). Given Linux's open source code, virus writers could have a field day if they wanted.