Security of assessments/exams

Hello! We're looking into mitigating risk of cheating in our exams. We're approaching it from multiple angles, including test design (e.g. question pools, randomization, application-based questions, etc.), users "sharing" answers, etc. 

My question for this group is more about how to mitigate exam cheating with the software and LMS connections. Say, for instance, if someone were to open up a debug window during an exam and search for the answers in the code. Or if someone with more extensive computer skills was able to manipulate the information that is sent back from the exam built in Storyline 3 or 360 to our LMS. (Both of which some of our testers claim they have been able to do.) Are there ways to reduce or eliminate the possibility of these types of things? Are there publish settings that work better than others for reducing risk this way? 

Thanks!