Which two items should be included in an incident report to be discussed during a post-incident debrief? (Select two.)

A post-incident debrief aims to review the handling of a security incident to identify lessons learned and improve future responses. The incident report is the primary document for this discussion. A detailed incident timeline (D) is essential to understand the sequence of events, evaluate the speed and effectiveness of the response at each stage, and identify delays. Identifying all devices and systems involved (E) is crucial for understanding the full scope and impact of the incident, ensuring complete remediation, and determining how the breach occurred and spread.

A. A software inventory is a general asset management document, not a specific component of an incident report unless directly relevant to the compromised assets.

B. Including speculation about adversary attribution in a debrief report is unprofessional; reports should focus on factual evidence and observed indicators of compromise.

C. Product manuals are reference materials used during an investigation; they are not part of the final incident report for a debrief.

1. Cichonski, P., Millar, T., Grance, T., & Scarfone, K. (2012). Computer Security Incident Handling Guide (NIST Special Publication 800-61 Rev. 2). National Institute of Standards and Technology. Section 3.4.5, "Lessons Learned," emphasizes reviewing the incident timeline and the scope of the incident (which includes involved systems) as core activities.

2. Proofpoint, Inc. (2021). Anatomy of a Sophisticated Email Attack. This whitepaper outlines the investigative process, which inherently involves creating a timeline of the attack and identifying all affected systems and users to understand the scope, reinforcing the importance of these elements in any post-incident analysis. (Section: "The Investigation").