What type of evidence should be collected during an incident investigation?

The correct answer emphasizes the importance of gathering both physical and digital evidence during an incident investigation. In the context of security incident response, a comprehensive understanding of what occurred and how systems were compromised often requires examining multiple types of evidence.

Digital evidence, such as logs and file systems, can reveal activities leading up to an incident, help to trace unauthorized access, and identify the method of attack. This information is crucial for understanding the nature of the incident, its impact, and the tactics used by attackers.

On the other hand, physical evidence can provide context that digital evidence alone cannot. This may include hardware devices, like computers or servers, that were compromised, as well as any physical access points which may have facilitated the intrusion. Collecting physical evidence could also uncover potential security vulnerabilities that were exploited or even point toward insider threats.

Combining insights from both these types of evidence leads to a more thorough investigation, enabling organizations to improve their overall security posture and develop stronger mitigation strategies for the future. By focusing solely on one type of evidence, as suggested in the other choices, one risks missing critical information that could inform the investigation and response.