When reviewing alert evidence, which of the following provides the clearest insight into the root cause of an attack?

Forensic data from affected hosts provides the most direct and comprehensive insight into the root cause of an attack. The Cortex XDR agent collects detailed endpoint activity, including process creations, file modifications, registry changes, and network connections. This rich dataset is processed by the Causality Analysis Engine to construct a visual process tree or "causality chain." This chain explicitly maps the sequence of events, allowing an analyst to trace the attack back to its initial point of entry and understand the exact actions taken by the adversary, thereby revealing the root cause.