What type of analysis provides access to the actual instructions the software will be guessing?

The type of analysis that provides access to the actual instructions the software will be executing is dynamic code analysis. This approach involves running the program during execution, which allows the analysis to observe how the software operates in real-time, including its interactions with the operating system, memory, and other applications. By observing these interactions, dynamic code analysis can help identify vulnerabilities or areas where the software might behave unexpectedly.

Dynamic analysis provides insights into the runtime behavior of applications and includes techniques such as testing inputs and monitoring system calls. Through this process, one can analyze how the software responds to various data inputs, discover potential security flaws, and understand the logic flow during execution. This is critical for uncovering issues that may not be evident in static studies, where code is analyzed without executing it.

In contrast, static code analysis reviews the source code without executing it, focusing on the syntax and predefined patterns, while manual source code review is a more subjective analysis that relies on developer expertise to identify flaws. Fuzz testing generates random or malformed inputs to test software security but primarily aims to expose vulnerabilities rather than provide direct insight into the resultant execution instructions. Thus, dynamic code analysis ultimately provides the most relevant data regarding how software behaves in a live environment.