What is one thing a tester can do to ensure that the software is trusted and is not changing or tampering with critical data on the back end of a system it is loaded on?

What is one thing a tester can do to ensure that the software is trusted and is not changing or
tampering with critical data on the back end of a system it is loaded on?

A.
Proper testing

B.
Secure coding principles

C.
Systems security and architecture review

D.
Analysis of interrupts within the software