Which report detail would help identify spawning shells?

Identifying spawning shells is crucial for understanding potential security incidents, as these shells can indicate unauthorized command execution or exploitation attempts. Among the options given, the detail that best aids in identifying spawning shells is related to kernel modules.

Modules loaded at the kernel level can directly influence the behavior of the operating system, including how processes are spawned and managed. Monitoring kernel module loads helps identify any unusual or malicious activity; for example, if a malicious kernel module is loaded, it could be a precursor to spawning shells or establishing rootkits.

While the other options—such as hosting kernel version information, security breaches, and threat analysis—may provide context or useful information in a broader investigative scenario, they do not directly address the mechanics of process and shell spawning. The operation and integrity of kernel-level components are pivotal for understanding the system's security state, thus focusing on kernel module loads is essential for effectively identifying potentially harmful activities related to spawning shells.