How do they do it, asks the technician.
Why would they do it, asks the criminologist.
Considering motives is a great way to analyse potential abuse. What are the assets? What could make an adversary attempt to compromise the system?
If you run a bank, one answer is obvious. But people are not driven merely by financial gain. Revenge, power, politics, publicity, and let's not forget curiosity ("because I can"). The list goes on.
Get those assets and motives straightened out before calling the technician.