Which is the common name for a program that has no useful purpose, but attempts to spread itself to other systems and often damages resources on the systems where it is found?

You are working with a professional edition organization. they wish to install the expense tracker which requires the use of 4 custom tabs, 3 custom objects, and one custom app. if the company is already using 4 applications, 36 custom objects, and 7 custom tabs, what will happen when they try to install expense tracker?