ISC CISSP Practice Test 87
Question 860
A development manager claims software security improved because static scans now report fewer findings after many rules were disabled. A designer proposes: Treat any reduction in scan alerts as definitive evidence of safer software. What is the MOST significant security deficiency in this proposal?
- A marketing claim lacks sufficient test scope and defensible evidence.
- Assessment capability must follow changes in implementation technology.
- No tool or test can guarantee absence of all vulnerabilities; assurance depends on credible coverage.
- Changing detector sensitivity can mask real vulnerabilities.
Explanation
Correct Answer
D:Changing detector sensitivity can mask real vulnerabilities. This is the direct weakness in the proposed action.
Incorrect Answers
A:This is a limitation elsewhere: A vendor claims zero vulnerabilities in software, but the client needs credible evidence for purchasing decisions. It does not explain the deficiency of the specified proposed approach.
B:This explains a later shift in requirements (A new release adds an unfamiliar programming language with weak scanner support.), not the failure of the current proposal.
C:This is an advantage of another design (Request scoped assessment methods, limits, independent evidence and remediation history.), not the particular flaw of Treat any reduction in scan alerts as definitive evidence of safer software.
Question 861
A development manager claims software security improved because static scans now report fewer findings after many rules were disabled. The organization has now implemented this response: Measure meaningful defect discovery, coverage, escaped vulnerabilities and rule configuration changes. Which observation would MOST directly demonstrate that the security objective was met?
- A device-level test confirms cache removal and logout clearing across app versions.
- Evidence review documents sample coverage, outstanding risk and contractual obligations.
- An approved change ticket for Measure meaningful defect discovery, coverage, escaped vulnerabilities and rule configuration changes. without a completed verification result.
- A coverage-controlled comparison shows critical defect trends and independent test results.
Explanation
Correct Answer
D:A coverage-controlled comparison shows critical defect trends and independent test results. This validates that finding counts may fall because coverage weakened rather than risk declined.
Incorrect Answers
A:This demonstrates controls in another circumstance: A mobile application passes security unit tests but a live update introduces unsafe data caching on shared devices.
B:This other observation is relevant to: A vendor claims zero vulnerabilities in software, but the client needs credible evidence for purchasing decisions.
C:An approved change without an executed test cannot prove operating effectiveness. The needed evidence is A coverage-controlled comparison shows critical defect trends and independent test results.
Question 862
A previous security situation was: A development manager claims software security improved because static scans now report fewer findings after many rules were disabled. Now the requirement changes: A new release adds an unfamiliar programming language with weak scanner support. Which NEW action BEST answers the changed need?
- Measure meaningful defect discovery, coverage, escaped vulnerabilities and rule configuration changes.
- Treat any reduction in scan alerts as definitive evidence of safer software.
- A coverage-controlled comparison shows critical defect trends and independent test results.
- Extend testing methods and evaluate coverage gaps before accepting risk metrics.
Explanation
Correct Answer
D:Assessment capability must follow changes in implementation technology. The revised action is Extend testing methods and evaluate coverage gaps before accepting risk metrics.
Incorrect Answers
A:This is the appropriate response to the original situation: Finding counts may fall because coverage weakened rather than risk declined. It does not directly meet the new condition.
B:This remains inappropriate: Changing detector sensitivity can mask real vulnerabilities.
C:This is a record of how the initial safeguard would be checked, not an action implementing the newly requested condition: A coverage-controlled comparison shows critical defect trends and independent test results.
Question 863
A mobile application passes security unit tests but a live update introduces unsafe data caching on shared devices. What should the security manager recommend as the MOST appropriate response to the current requirement?
- Define risk-based encrypted offline storage and expiration rules.
- Request scoped assessment methods, limits, independent evidence and remediation history.
- Perform runtime regression testing of sensitive storage and session handling after change.
- Approve deployment based solely on old source-level test results.
Explanation
Correct Answer
C:Source unit tests may miss platform-specific storage behavior. This directly addresses the stated situation.
Incorrect Answers
A:This is appropriate for a later condition (The business later enables offline mode for certain data.), but it does not directly resolve the initial need. Legitimate offline use changes secure caching requirements instead of eliminating them.
B:This response addresses a different condition: A vendor claims zero vulnerabilities in software, but the client needs credible evidence for purchasing decisions. The present case requires the measure described by Perform runtime regression testing of sensitive storage and session handling after change.
D:Historical unit checks do not prove new runtime data handling is secure. The proposal would not be defensible for this case.
Question 864
A mobile application passes security unit tests but a live update introduces unsafe data caching on shared devices. A designer proposes: Approve deployment based solely on old source-level test results. What is the MOST significant security deficiency in this proposal?
- Legitimate offline use changes secure caching requirements instead of eliminating them.
- Finding counts may fall because coverage weakened rather than risk declined.
- Historical unit checks do not prove new runtime data handling is secure.
- Changing detector sensitivity can mask real vulnerabilities.
Explanation
Correct Answer
C:Historical unit checks do not prove new runtime data handling is secure. This is the direct weakness in the proposed action.
Incorrect Answers
A:This explains a later shift in requirements (The business later enables offline mode for certain data.), not the failure of the current proposal.
B:This is an advantage of another design (Measure meaningful defect discovery, coverage, escaped vulnerabilities and rule configuration changes.), not the particular flaw of Approve deployment based solely on old source-level test results.
D:This is a limitation elsewhere: A development manager claims software security improved because static scans now report fewer findings after many rules were disabled. It does not explain the deficiency of the specified proposed approach.
Question 865
A mobile application passes security unit tests but a live update introduces unsafe data caching on shared devices. The organization has now implemented this response: Perform runtime regression testing of sensitive storage and session handling after change. Which observation would MOST directly demonstrate that the security objective was met?
- A coverage-controlled comparison shows critical defect trends and independent test results.
- An approved change ticket for Perform runtime regression testing of sensitive storage and session handling after change. without a completed verification result.
- A device-level test confirms cache removal and logout clearing across app versions.
- Evidence review documents sample coverage, outstanding risk and contractual obligations.
Explanation
Correct Answer
C:A device-level test confirms cache removal and logout clearing across app versions. This validates that source unit tests may miss platform-specific storage behavior.
Incorrect Answers
A:This other observation is relevant to: A development manager claims software security improved because static scans now report fewer findings after many rules were disabled.
B:An approved change without an executed test cannot prove operating effectiveness. The needed evidence is A device-level test confirms cache removal and logout clearing across app versions.
D:This demonstrates controls in another circumstance: A vendor claims zero vulnerabilities in software, but the client needs credible evidence for purchasing decisions.
Question 866
A previous security situation was: A mobile application passes security unit tests but a live update introduces unsafe data caching on shared devices. Now the requirement changes: The business later enables offline mode for certain data. Which NEW action BEST answers the changed need?
- Approve deployment based solely on old source-level test results.
- A device-level test confirms cache removal and logout clearing across app versions.
- Define risk-based encrypted offline storage and expiration rules.
- Perform runtime regression testing of sensitive storage and session handling after change.
Explanation
Correct Answer
C:Legitimate offline use changes secure caching requirements instead of eliminating them. The revised action is Define risk-based encrypted offline storage and expiration rules.
Incorrect Answers
A:This remains inappropriate: Historical unit checks do not prove new runtime data handling is secure.
B:This is a record of how the initial safeguard would be checked, not an action implementing the newly requested condition: A device-level test confirms cache removal and logout clearing across app versions.
D:This is the appropriate response to the original situation: Source unit tests may miss platform-specific storage behavior. It does not directly meet the new condition.
Question 867
A vendor claims zero vulnerabilities in software, but the client needs credible evidence for purchasing decisions. What should the security manager recommend as the MOST appropriate response to the current requirement?
- Measure meaningful defect discovery, coverage, escaped vulnerabilities and rule configuration changes.
- Request scoped assessment methods, limits, independent evidence and remediation history.
- Accept a single marketing score as conclusive proof of security effectiveness.
- Require remediation deadlines and track residual exposure under supplier management.
Explanation
Correct Answer
B:No tool or test can guarantee absence of all vulnerabilities; assurance depends on credible coverage.
Incorrect Answers
A:This response addresses a different condition: A development manager claims software security improved because static scans now report fewer findings after many rules were disabled. The present case requires the measure described by Request scoped assessment methods, limits, independent evidence and remediation history.
C:A marketing claim lacks sufficient test scope and defensible evidence. The proposal would not be defensible for this case.
D:This is appropriate for a later condition (A critical flaw is subsequently disclosed in a purchased component.), but it does not directly resolve the initial need. Discovery after purchase shifts from assurance selection to active vulnerability response.
Question 868
A vendor claims zero vulnerabilities in software, but the client needs credible evidence for purchasing decisions. A designer proposes: Accept a single marketing score as conclusive proof of security effectiveness. What is the MOST significant security deficiency in this proposal?
- Source unit tests may miss platform-specific storage behavior.
- A marketing claim lacks sufficient test scope and defensible evidence.
- Historical unit checks do not prove new runtime data handling is secure.
- Discovery after purchase shifts from assurance selection to active vulnerability response.
Explanation
Correct Answer
B:A marketing claim lacks sufficient test scope and defensible evidence. This is the direct weakness in the proposed action.
Incorrect Answers
A:This is an advantage of another design (Perform runtime regression testing of sensitive storage and session handling after change.), not the particular flaw of Accept a single marketing score as conclusive proof of security effectiveness.
C:This is a limitation elsewhere: A mobile application passes security unit tests but a live update introduces unsafe data caching on shared devices. It does not explain the deficiency of the specified proposed approach.
D:This explains a later shift in requirements (A critical flaw is subsequently disclosed in a purchased component.), not the failure of the current proposal.
Question 869
A vendor claims zero vulnerabilities in software, but the client needs credible evidence for purchasing decisions. The organization has now implemented this response: Request scoped assessment methods, limits, independent evidence and remediation history. Which observation would MOST directly demonstrate that the security objective was met?
- An approved change ticket for Request scoped assessment methods, limits, independent evidence and remediation history. without a completed verification result.
- Evidence review documents sample coverage, outstanding risk and contractual obligations.
- A coverage-controlled comparison shows critical defect trends and independent test results.
- A device-level test confirms cache removal and logout clearing across app versions.
Explanation
Correct Answer
B:Evidence review documents sample coverage, outstanding risk and contractual obligations. This validates that no tool or test can guarantee absence of all vulnerabilities; assurance depends on credible coverage.
Incorrect Answers
A:An approved change without an executed test cannot prove operating effectiveness. The needed evidence is Evidence review documents sample coverage, outstanding risk and contractual obligations.
C:This demonstrates controls in another circumstance: A development manager claims software security improved because static scans now report fewer findings after many rules were disabled.
D:This other observation is relevant to: A mobile application passes security unit tests but a live update introduces unsafe data caching on shared devices.
Question 870
A previous security situation was: A vendor claims zero vulnerabilities in software, but the client needs credible evidence for purchasing decisions. Now the requirement changes: A critical flaw is subsequently disclosed in a purchased component. Which NEW action BEST answers the changed need?
- Evidence review documents sample coverage, outstanding risk and contractual obligations.
- Require remediation deadlines and track residual exposure under supplier management.
- Request scoped assessment methods, limits, independent evidence and remediation history.
- Accept a single marketing score as conclusive proof of security effectiveness.
Explanation
Correct Answer
B:Discovery after purchase shifts from assurance selection to active vulnerability response. The revised action is Require remediation deadlines and track residual exposure under supplier management.
Incorrect Answers
A:This is a record of how the initial safeguard would be checked, not an action implementing the newly requested condition: Evidence review documents sample coverage, outstanding risk and contractual obligations.
C:This is the appropriate response to the original situation: No tool or test can guarantee absence of all vulnerabilities; assurance depends on credible coverage. It does not directly meet the new condition.
D:This remains inappropriate: A marketing claim lacks sufficient test scope and defensible evidence.