Upon inspecting the systems in his network, Robert has detected that many of them are operating unlicensed copies of a CAD software application which the company has not bought. What type of risk should he classify this as?

The most precise term to describe this risk is "software compliance," even though it is an internal risk. The issue is accurately reflected by the term software compliance. Intellectual property (IP) theft risk is relevant when an organization's intellectual property is stolen, and it is not applicable when license violations occur with third parties. The scenario does not pertain to a legacy system or is not presented as such in the question.