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ISC2 CC Practice Question: A security analyst is reviewing event logs and…

A security analyst is reviewing event logs and notices multiple failed login attempts from a single IP address followed by a successful login. Which TWO actions should the analyst take next?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Escalate to the incident response team.

Options B and C are correct. Investigating the source IP address for malicious activity (C) helps determine if there is a broader threat, and escalating to the incident response team (B) ensures proper handling. The other options—disabling the account, blocking the IP at the firewall, or resetting the password—may be necessary later but should not be performed without further investigation.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Disable the user account immediately.

    Why it's wrong here

    Premature without confirming compromise; could alert an attacker and disrupt legitimate work.

  • Escalate to the incident response team.

    Why this is correct

    Escalation ensures proper handling and coordination, especially if the incident indicates a broader attack.

  • Investigate the source IP address for malicious activity.

    Why this is correct

    Essential to determine if the IP is known for attacks or part of a targeted campaign.

  • Block the IP address at the firewall.

    Why it's wrong here

    Blocking may be appropriate later, but investigation and escalation should come first to gather threat intelligence.

  • Reset the password for the affected account.

    Why it's wrong here

    Should be done after confirming compromise, but immediate password reset may tip off an attacker.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This CC practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CC exam.