Weekly CISSP Practice
Exam Questions
Week 30 - Question 2
Which of the following is NOT a typical objective of Incident Response?
A. Eradication of Threats
B. Root Cause Analysis
C. Financial Forecasting
D. Containment of the Incident
Answer: C
Explanation:
A. Eradication of Threats
Eradication is the phase where the actual "clean-up" happens after the threat has been stopped.
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The Goal: To remove the components of the incident from the environment.
This includes deleting malware, disabling compromised user accounts, and identifying all affected hosts. -
The Distinction: While Containment stops the bleeding, Eradication removes the cause of the wound.
B. Root Cause Analysis (RCA)
RCA is a critical component of the Post-Incident Activity (Lessons Learned) phase.
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The Goal: To move beyond the symptoms and find the underlying vulnerability.
If a server was infected with ransomware, the RCA determines how—was it an unpatched vulnerability, a phishing email, or a misconfigured firewall? -
The Benefit: Without RCA, the organization is doomed to repeat the same incident because the "hole" in the defense remains open.
C. Financial Forecasting
Financial forecasting is a Business/Strategic Management function.
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Why it's the Answer: While an incident certainly has financial implications (fines, recovery costs, lost revenue), the Incident Response Team (IRT) is not responsible for predicting the company's future quarterly earnings or market trends.
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The Nuance: The IR team will track the costs of the incident (total hours spent, hardware replaced), but "forecasting" is an executive-level activity unrelated to the tactical management of a security breach.
D. Containment of the Incident
Containment is often the most time-sensitive phase of IR.
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The Goal: To limit the "blast radius" or scope of an incident.
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The Strategy: * Short-term: Isolating a network segment or blocking a malicious IP.
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Long-term: Patching systems or implementing new filters while the investigation continues.
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The Benefit: It prevents an incident on one workstation from becoming a company-wide disaster.
Key Takeaway for the CISSP Exam
The NIST SP 800-61 standard is the primary reference for IR on the exam. Remember the logical flow:
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Preparation: Training, tools, and policy (happens before the incident).
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Detection & Analysis: Identifying that a "bad thing" is happening.
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Containment, Eradication, & Recovery: Stopping the threat, removing it, and getting back to normal business.
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Post-Incident Activity: Lessons learned and Root Cause Analysis.
Podcasts
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