ISC CISSP Practice Test 1
Question 1
A security analyst uncovers reliable evidence of a material breach while an executive asks the team to omit it from its internal record. Which recommendation should the security leader make FIRST to address the stated objective?
- Have counsel and accountable response leaders determine required notifications and deadlines.
- Preserve the evidence and escalate the facts through established ethics, legal and incident governance channels.
- Delete the relevant logs and tell the team the matter is resolved.
- A timestamped case trail links preserved evidence, escalation and an authorized response decision.
Explanation
Correct Answer
B:Escalation with evidence preserves accountability and supports responsible response without unilateral or unlawful disclosure. The scenario is: A security analyst uncovers reliable evidence of a material breach while an executive asks the team to omit it from its internal record.
Incorrect Answers
A:This addresses a distinct subsequent requirement: Later, the organization must decide which affected parties to notify under applicable law and contracts. Notification scope is a legal and governance decision, not a replacement for the immediate evidence-preservation duty.
C:Concealment and evidence destruction defeat ethical responsibilities and defensible investigation. The rejected action is: Delete the relevant logs and tell the team the matter is resolved.
D:This is useful evidence after implementation, rather than the FIRST recommended decision for this objective. A timestamped case trail links preserved evidence, escalation and an authorized response decision.
Question 2
A security analyst uncovers reliable evidence of a material breach while an executive asks the team to omit it from its internal record. A colleague instead proposes: "Delete the relevant logs and tell the team the matter is resolved." Which finding BEST explains why the proposal should be rejected?
- No evidence or governance records should be retained when evaluating this 1.1 decision.
- Concealment and evidence destruction defeat ethical responsibilities and defensible investigation.
- Its only deficiency is a missing executive signature, even if the design still fails the stated requirement.
- It is inadequate only because of a different later condition: Later, the organization must decide which affected parties to notify under applicable law and contracts.
Explanation
Correct Answer
B:Concealment and evidence destruction defeat ethical responsibilities and defensible investigation. This directly invalidates the proposed action: Delete the relevant logs and tell the team the matter is resolved.
Incorrect Answers
A:Destroying records would weaken oversight and cannot remedy the immediate technical or governance flaw: Concealment and evidence destruction defeat ethical responsibilities and defensible investigation.
C:Approval alone cannot fix the specific weakness: Concealment and evidence destruction defeat ethical responsibilities and defensible investigation.
D:The subsequent circumstance is separate and does not explain why this proposed action fails the initial case. Notification scope is a legal and governance decision, not a replacement for the immediate evidence-preservation duty.
Question 3
A security analyst uncovers reliable evidence of a material breach while an executive asks the team to omit it from its internal record. After implementing "Preserve the evidence and escalate the facts through established ethics, legal and incident governance channels.", what evidence BEST demonstrates that the intended security outcome is functioning?
- A meeting record that the alternate design "Have counsel and accountable response leaders determine required notifications and deadlines." was discussed but never tested.
- A timestamped case trail links preserved evidence, escalation and an authorized response decision.
- A note proposing to test this exact 1.1 measure in a future quarter.
- A declaration that no incident has been reported, without exercising the relevant control.
Explanation
Correct Answer
B:A timestamped case trail links preserved evidence, escalation and an authorized response decision. This verifies the original requirement because escalation with evidence preserves accountability and supports responsible response without unilateral or unlawful disclosure.
Incorrect Answers
A:Discussion of a different design does not demonstrate the deployed control. Notification scope is a legal and governance decision, not a replacement for the immediate evidence-preservation duty.
C:An unexecuted future plan does not prove current effectiveness for the stated 1.1 objective. The evidence should include: A timestamped case trail links preserved evidence, escalation and an authorized response decision.
D:Absence of reported incidents is not a controlled validation of the requirement. A stronger proof is: A timestamped case trail links preserved evidence, escalation and an authorized response decision.
Question 4
The organization previously faced this problem: A security analyst uncovers reliable evidence of a material breach while an executive asks the team to omit it from its internal record. Its requirement then changes: Later, the organization must decide which affected parties to notify under applicable law and contracts. Which revised action BEST meets the new requirement?
- Keep the original 1.1 policy unchanged, and defer the newly identified requirement without a risk decision.
- Have counsel and accountable response leaders determine required notifications and deadlines.
- Preserve the evidence and escalate the facts through established ethics, legal and incident governance channels.
- Delete the relevant logs and tell the team the matter is resolved.
Explanation
Correct Answer
B:Notification scope is a legal and governance decision, not a replacement for the immediate evidence-preservation duty. The appropriate revised action is: Have counsel and accountable response leaders determine required notifications and deadlines.
Incorrect Answers
A:The new requirement needs an accountable response, not automatic deferral. Notification scope is a legal and governance decision, not a replacement for the immediate evidence-preservation duty.
C:This addresses the original situation: Escalation with evidence preserves accountability and supports responsible response without unilateral or unlawful disclosure. It does not directly meet the changed requirement: Later, the organization must decide which affected parties to notify under applicable law and contracts.
D:The earlier rejected approach remains inappropriate. Concealment and evidence destruction defeat ethical responsibilities and defensible investigation.
Question 5
An assessor learns that a third-party penetration report was edited to hide findings shortly before the board review. What should the security manager recommend as the MOST appropriate response to the current requirement?
- Arrange a documented independent technical review without deleting either version.
- Design availability through redundant failure domains, controlled failover and recovery testing.
- Retain the signed original report, document the discrepancy and notify independent ethics and oversight channels.
- Publish confidential customer details to social media to force management to respond.
Explanation
Correct Answer
C:Integrity of assurance evidence and faithful reporting are essential to professional accountability.
Incorrect Answers
A:This is appropriate for a later condition (The assessment vendor disputes factual details in a preserved finding.), but it does not directly resolve the initial need. Disputed evidence requires a traceable adjudication, not concealment or premature public accusation.
B:This response addresses a different condition: A public emergency dispatch platform becomes unavailable whenever its single regional service instance fails. The present case requires the measure described by Retain the signed original report, document the discrepancy and notify independent ethics and oversight channels.
D:Uncontrolled disclosure can violate confidentiality and duties even when a finding must be escalated.
Question 6
An assessor learns that a third-party penetration report was edited to hide findings shortly before the board review. A designer proposes: Publish confidential customer details to social media to force management to respond. What is the MOST significant security deficiency in this proposal?
- Disputed evidence requires a traceable adjudication, not concealment or premature public accusation.
- Consistent enterprise criteria make security decisions comparable to business tolerance and strategy.
- Uncontrolled disclosure can violate confidentiality and duties even when a finding must be escalated.
- Local managers cannot unilaterally define the organization's overall risk tolerance.
Explanation
Correct Answer
C:Uncontrolled disclosure can violate confidentiality and duties even when a finding must be escalated.
Incorrect Answers
A:This explains a later shift in requirements (The assessment vendor disputes factual details in a preserved finding.), not the failure of the current proposal.
B:This is an advantage of another design (Establish an enterprise-aligned risk governance process with common criteria, clear accountability and board reporting.), not the particular flaw of Publish confidential customer details to social media to force management to respond.
D:This is a limitation elsewhere: The board receives separate technical risk spreadsheets, each using different scoring conventions and with no agreed executive owner. It does not explain the deficiency of the specified proposed approach.
Question 7
An assessor learns that a third-party penetration report was edited to hide findings shortly before the board review. The organization has now implemented this response: Retain the signed original report, document the discrepancy and notify independent ethics and oversight channels. Which observation would MOST directly demonstrate that the security objective was met?
- A defensible collection log records custodians, time range, hashes and disclosure approvals.
- An approved change ticket for Retain the signed original report, document the discrepancy and notify independent ethics and oversight channels. without a completed verification result.
- The audit trail reconciles original signed findings, editor actions and the authorized investigation's disposition.
- Portfolio decisions trace the product's critical dependencies to selected controls, owners and milestones.
Explanation
Correct Answer
C:The audit trail reconciles original signed findings, editor actions and the authorized investigation's disposition. This validates that integrity of assurance evidence and faithful reporting are essential to professional accountability.
Incorrect Answers
A:This other observation is relevant to: A security team receives a civil-litigation discovery request for archived communications tied to a contractual dispute.
B:An approved change without an executed test cannot prove operating effectiveness. The needed evidence is The audit trail reconciles original signed findings, editor actions and the authorized investigation's disposition.
D:This demonstrates controls in another circumstance: A multinational asks its chief security officer to demonstrate how security priorities support a planned digital product launch.
Question 8
A previous security situation was: An assessor learns that a third-party penetration report was edited to hide findings shortly before the board review. Now the requirement changes: The assessment vendor disputes factual details in a preserved finding. Which NEW action BEST answers the changed need?
- Publish confidential customer details to social media to force management to respond.
- The audit trail reconciles original signed findings, editor actions and the authorized investigation's disposition.
- Arrange a documented independent technical review without deleting either version.
- Retain the signed original report, document the discrepancy and notify independent ethics and oversight channels.
Explanation
Correct Answer
C:Disputed evidence requires a traceable adjudication, not concealment or premature public accusation. The revised action is Arrange a documented independent technical review without deleting either version.
Incorrect Answers
A:This remains inappropriate: Uncontrolled disclosure can violate confidentiality and duties even when a finding must be escalated.
B:This is a record of how the initial safeguard would be checked, not an action implementing the newly requested condition: The audit trail reconciles original signed findings, editor actions and the authorized investigation's disposition.
D:This is the appropriate response to the original situation: Integrity of assurance evidence and faithful reporting are essential to professional accountability. It does not directly meet the new condition.
Question 9
A payroll system has encryption enabled but attackers altered salary amounts through an overly privileged service account. What should the security manager recommend as the MOST appropriate response to the current requirement?
- Design availability through redundant failure domains, controlled failover and recovery testing.
- Apply integrity-focused authorization, separation of duties and tamper-evident transaction logging.
- Add more disk encryption and assume modification risk is eliminated.
- Require signed approvals and immutable, attributable change records.
Explanation
Correct Answer
B:Confidentiality encryption does not ensure that only authorized changes affect payroll records.
Incorrect Answers
A:This response addresses a different condition: A public emergency dispatch platform becomes unavailable whenever its single regional service instance fails. The present case requires the measure described by Apply integrity-focused authorization, separation of duties and tamper-evident transaction logging.
C:Encryption at rest does not prevent an authorized-but-compromised identity from changing data. The proposal would not be defensible for this case.
D:This is appropriate for a later condition (The payroll application now must prove who approved each valid salary change.), but it does not directly resolve the initial need. Accountable authorization and nonrepudiable evidence meet a stronger audit objective than integrity enforcement alone.
Question 10
A payroll system has encryption enabled but attackers altered salary amounts through an overly privileged service account. A designer proposes: Add more disk encryption and assume modification risk is eliminated. What is the MOST significant security deficiency in this proposal?
- Availability requires tolerated component failure, not simply data secrecy or message signing.
- Encryption at rest does not prevent an authorized-but-compromised identity from changing data.
- Certificate hygiene cannot prevent loss of the only running processing location.
- Accountable authorization and nonrepudiable evidence meet a stronger audit objective than integrity enforcement alone.
Explanation
Correct Answer
B:Encryption at rest does not prevent an authorized-but-compromised identity from changing data. This is the direct weakness in the proposed action.
Incorrect Answers
A:This is an advantage of another design (Design availability through redundant failure domains, controlled failover and recovery testing.), not the particular flaw of Add more disk encryption and assume modification risk is eliminated.
C:This is a limitation elsewhere: A public emergency dispatch platform becomes unavailable whenever its single regional service instance fails. It does not explain the deficiency of the specified proposed approach.
D:This explains a later shift in requirements (The payroll application now must prove who approved each valid salary change.), not the failure of the current proposal.