This CS0-003 practice question tests your understanding of security operations. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A deception credential placed in a file share is used to authenticate to a server. No legitimate user should know the credential. What does this most likely indicate? In the alert triage phase, Which action gives the analyst the clearest next triage step?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Credential access or lateral movement activity that warrants high-priority investigation
A deception credential that no legitimate user should know being used to authenticate to a server is a classic indicator of credential theft and lateral movement. In the alert triage phase, this finding warrants high-priority investigation because it suggests an attacker has successfully extracted the credential from the file share and is using it to move laterally within the network, which is a critical security incident.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The SIEM parser is always broken
Why it's wrong here
Parser issues are possible but should not be assumed for a high-fidelity canary hit.
✗
A scheduled password rotation completed successfully
Why it's wrong here
Rotation would not normally use a deception credential.
✓
Credential access or lateral movement activity that warrants high-priority investigation
Why this is correct
Use of a honey credential is a high-fidelity signal because legitimate workflows should not touch it.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The file share requires more storage capacity
Why it's wrong here
Storage capacity is unrelated to credential use.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the concept that deception credentials are specifically designed to detect credential theft and lateral movement, and candidates may mistakenly think this indicates a benign process like password rotation or a SIEM misconfiguration.
Detailed technical explanation
How to think about this question
Deception credentials (honeytokens) are planted in file shares, databases, or configuration files to detect unauthorized access. When an attacker uses tools like Mimikatz, BloodHound, or manual lateral movement techniques (e.g., PsExec, WinRM) to authenticate with these credentials, the authentication attempt is logged by the domain controller (Event ID 4624) and correlated by the SIEM. The key behavior is that the credential is never used in normal operations, so any authentication event is a high-fidelity indicator of compromise (IoC).
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A SOC analyst notices unusual lateral movement in the network at 2 AM. The IR playbook dictates: identify and contain (isolate the affected machine), then eradicate (remove the malware), then recover (restore from backup), then document. Skipping containment before eradication risks the attacker regaining access. Questions like this test the sequence and rationale of incident response phases.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CS0-003 question in full detail.
Security Operations — This question tests Security Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Credential access or lateral movement activity that warrants high-priority investigation — A deception credential that no legitimate user should know being used to authenticate to a server is a classic indicator of credential theft and lateral movement. In the alert triage phase, this finding warrants high-priority investigation because it suggests an attacker has successfully extracted the credential from the file share and is using it to move laterally within the network, which is a critical security incident.
What should I do if I get this CS0-003 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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