What is the term for changing existing input values in programming?

The term that refers to changing existing input values in programming is known as Mutation. In the context of software development and testing, mutation involves altering certain aspects of a program's input to evaluate how these changes affect the program's behavior, often used in testing strategies to ensure that the software can handle various forms of input and to identify potential weaknesses or vulnerabilities.

Mutational testing typically helps in assessing the quality of test cases by determining whether they can detect changes in the code. If the test cases do not fail in response to mutated inputs, it suggests that the tests may not be comprehensive enough.

This approach is different from the other terms provided. Generation-Based refers to the creation of new input values based on some existing criteria rather than altering them. Dynamic Analysis involves examining a program's behavior during execution without necessarily changing inputs, while Static Application Security Testing focuses on analyzing code without executing it, highlighting potential vulnerabilities by reviewing the source code rather than manipulating inputs.