Threat Modeling Testing

Write a 500-word essay explaining a situation at your workplace that would have required a good tester when threat modeling. 

In your essay, please answer the following in your own words:

1. Define testing
2. Describe your work-related problem which required testing
3. What processes were used to perform test?
4. Explain construction of software model and uses.
5. Explain why a clear statement of validation was useful when testing threat model in your work-related environment?

1. Be sure to cite your sources using APA.