Question 770
The incident is resolved, but its root weakness still requires policy attention: A shopping-cart request changes the quantity after price calculation and the server trusts the client-supplied total. What durable process or monitoring change would make a repeat less likely?
- Recalculate price and discount server-side and reconcile impacted orders
- Test reverse-proxy trust boundaries in configuration reviews
- Compare backend order totals with server-side catalog price computations
- Test business workflows for parameter tampering, not only injection
Explanation
Correct Answer
D:Logic abuse often survives syntactic input validation; its effectiveness can be exercised against the warning conditions associated with whether business logic trusts client-calculated pricing.
Incorrect Answers
A:Authoritative server checks repair transactional integrity; case recovery is not future-risk control in the decision about whether business logic trusts client-calculated pricing.
B:Header provenance matters to access-control decisions; it is meant to address whether client IP spoofing defeats application access control, not recurrence prevention for whether business logic trusts client-calculated pricing.
C:Manipulated client fields can bypass intended purchase validation; when judging whether business logic trusts client-calculated pricing, an investigation is not recurrence prevention; this is instead evidence validation.
Question 771
The immediate risk must be managed. The response record describes: After a patch, an API endpoint returns correct data but its authorization tests now allow cross-tenant requests. Which intervention is most effective before full eradication or restoration?
- Keep the modified endpoint unavailable to unauthorized tenants until retested
- Run negative authorization tests with independent tenant identities
- Restrict order processing until affected price fields are reconciled
- Fix object authorization and restore service only after negative tests pass
Explanation
Correct Answer
A:Preventing further disclosure takes priority over broad availability; the protective decision should be recorded and its effect tested against whether regression testing covers security boundaries.
Incorrect Answers
B:Functional success does not prove cross-tenant isolation remains intact; when judging whether regression testing covers security boundaries, investigation alone does not control current conditions; this is instead evidence validation.
C:Business containment prevents corrupted pricing from driving transactions; that method could help with whether restored data has business integrity; the initial containment or preservation decision here involves whether regression testing covers security boundaries.
D:Correct recovery validates security requirements as well as function; the requirement concerns whether regression testing covers security boundaries, so corrective follow-through follows initial protection.
Question 772
Active first response is underway for the following condition: A deployment pipeline publishes a backdoored static JavaScript bundle to all customers. What is the most appropriate short-term restriction or first-response decision?
- Withdraw the affected bundle and stop pipeline promotions
- Revoke unnecessary grants and rotate the exposed application secret
- Add tested canonicalization and emergency endpoint controls
- Compare artifact hashes, build provenance and release promotion records
- Sign release artifacts and enforce pipeline approvals and integrity checks
- Rebuild from trusted source with reviewed dependencies and rotate exposed keys
Explanation
Correct Answer
A:Distribution containment limits additional exposure; it protects the affected workflow while investigators continue resolving whether a build artifact was compromised.
Incorrect Answers
B:Least-privilege containment limits additional queries; this serves whether excessive backend privilege expands attack impact, whereas the requested result is initial containment or preservation involving whether a build artifact was compromised.
C:Mitigation must match how the application decodes input; the activity targets whether signature matching misses equivalent payloads; initial containment or preservation here concerns whether a build artifact was compromised.
D:A tampered bundle can execute in customer browsers across many sessions; the case needs initial containment or preservation addressing whether a build artifact was compromised; investigation alone does not control current conditions.
E:Software supply-chain controls reduce unauthorized publication; when judging whether a build artifact was compromised, prevention cannot replace immediate action; this is instead recurrence prevention.
F:A known-good release must not reuse tainted artifacts; for whether a build artifact was compromised, corrective follow-through follows initial protection; initial containment or preservation remains necessary.
Question 773
The coordinator needs corrective action rather than another alert. The event was: Session identifiers remain valid after logout and can be replayed from a second browser. Which follow-through step verifies the weakness was removed?
- Use secure session lifecycle tests in release pipelines
- Revoke exposed tokens and reduce session lifetimes while investigating
- Fix server-side session revocation and invalidate affected active sessions
- Review successful logins and reset compromised passwords if identified
Explanation
Correct Answer
C:The application should reject tokens marked expired or revoked; the recovery decision is tied to whether session invalidation is ineffective, not merely to reduced alert volume.
Incorrect Answers
A:Session management should not rely only on browser cookie deletion; when judging whether session invalidation is ineffective, future hardening is not current-state recovery; this is instead recurrence prevention.
B:Invalidating active credentials limits session hijacking; for whether session invalidation is ineffective, temporary protection does not complete correction; trusted restoration remains necessary.
D:Prevention of future attempts does not undo a successful takeover; that method could help with whether online credential guessing is constrained; the trusted restoration decision here involves whether session invalidation is ineffective.
Question 774
The incident is resolved, but its root weakness still requires policy attention: A production application has no access-log retention beyond an hour, yet its incident playbook expects a week of request history. What durable process or monitoring change would make a repeat less likely?
- Increase scoped retention and exercise event retrieval for test incidents
- Include telemetry retention in application release and response readiness checks
- Review gateway, application and database audit retention against expected investigation windows
- Design reversible migrations and validate backups before high-risk deployments
Explanation
Correct Answer
B:New services should not ship with invisible attack paths; a periodic review of this safeguard can track the risk described by whether web incident readiness includes sufficient evidence.
Incorrect Answers
A:Readiness requires that investigators can actually obtain necessary logs; case recovery is not future-risk control in the decision about whether web incident readiness includes sufficient evidence.
C:Short histories can erase intrusion traces before discovery; when judging whether web incident readiness includes sufficient evidence, an investigation is not recurrence prevention; this is instead evidence validation.
D:Release engineering improves incident recovery options; the other incident centers on whether recovery procedures cover schema changes, not this recurrence prevention question about whether web incident readiness includes sufficient evidence.
Question 775
The incident owner requests a defensible factual determination after hearing: A web server exposes backup archive files under a publicly reachable static-assets directory. What fact-checking activity tests the observed failure most directly?
- Remove external access to backups and preserve access logs for scope analysis
- Exclude backups from web roots and scan builds for secret-bearing artifacts
- Inspect log fields, dashboard access lists and token validity
- Request known test paths and compare server mapping with deployment manifests
Explanation
Correct Answer
D:Public file serving may disclose backups and embedded secrets; it makes the determination of whether sensitive files are retrievable without authentication defensible and reviewable by the incident owner.
Incorrect Answers
A:Immediate blocking stops further unauthenticated download; immediate protection does not substantiate findings in the decision about whether sensitive files are retrievable without authentication.
B:Deployment checks prevent accidental publication; the case needs evidence validation addressing whether sensitive files are retrievable without authentication; prevention is not incident verification.
C:Sensitive headers can become available to users beyond the token owner; this serves whether telemetry itself leaks credentials, whereas the requested result is evidence validation involving whether sensitive files are retrievable without authentication.
Question 776
A control owner is preparing preventive actions after observing: A support portal lets users modify the role field in their own profile update request and become administrators. What tested hardening or process measure follows from the lessons learned?
- Test model binding and privilege changes in API reviews
- Use an allowlist of editable fields and restore legitimate roles
- Test business workflows for parameter tampering, not only injection
- Compare accepted request fields with server-side authorization and model binding
Explanation
Correct Answer
A:Mass-assignment checks catch hidden role manipulation; it makes the lesson about whether mass assignment permits privilege escalation part of normal operations.
Incorrect Answers
B:Server-owned privilege attributes need independent authorization; for whether mass assignment permits privilege escalation, case recovery is not future-risk control; recurrence prevention remains necessary.
C:Logic abuse often survives syntactic input validation; the other incident centers on whether business logic trusts client-calculated pricing, not this recurrence prevention question about whether mass assignment permits privilege escalation.
D:Client-controlled fields must not be allowed to write protected roles; the goal is recurrence prevention for whether mass assignment permits privilege escalation. An investigation is not recurrence prevention.
Question 777
Before destructive cleanup is authorized, the team faces this situation: A web shell is found in an upload directory and appears to have been used to execute system commands. Which protective response should the coordinator authorize now?
- Disable execution in upload storage and monitor new executable files
- Rebuild the application host and remediate the upload weakness
- Inspect web access logs, shell file timestamps and process ancestry
- Block the shell URL and isolate the compromised application instance
- Withdraw the affected bundle and stop pipeline promotions
Explanation
Correct Answer
D:Removing the remote execution path limits follow-on commands; the scope of this restriction follows whether uploaded code provided persistent remote access rather than indiscriminately changing unrelated assets.
Incorrect Answers
A:Architecture should separate untrusted files from executable code; for whether uploaded code provided persistent remote access, prevention cannot replace immediate action; initial containment or preservation remains necessary.
B:Deleting only the shell may leave other attacker changes; the requirement concerns whether uploaded code provided persistent remote access, so corrective follow-through follows initial protection.
C:Web requests connected to spawned commands support active shell usage; the goal is initial containment or preservation for whether uploaded code provided persistent remote access. Investigation alone does not control current conditions.
E:Distribution containment limits additional exposure; the activity targets whether a build artifact was compromised; initial containment or preservation here concerns whether uploaded code provided persistent remote access.
Question 778
Service owners need a bounded short-term safeguard after observing: An API logs full authorization tokens to a shared monitoring dashboard during troubleshooting. What immediate action addresses the active exposure and leaves evidence available?
- Remove external access to backups and preserve access logs for scope analysis
- Inspect log fields, dashboard access lists and token validity
- Purge or protect historical token logs and revoke affected credentials
- Stop logging secrets and restrict existing log access
Explanation
Correct Answer
D:Limiting further collection and viewing reduces exposure; it restricts the path implicated in whether telemetry itself leaks credentials; later eradication and restoration remain separate decisions.
Incorrect Answers
A:Immediate blocking stops further unauthenticated download; the activity targets whether sensitive files are retrievable without authentication; initial containment or preservation here concerns whether telemetry itself leaks credentials.
B:Sensitive headers can become available to users beyond the token owner; for whether telemetry itself leaks credentials, investigation alone does not control current conditions; initial containment or preservation remains necessary.
C:Previous records may still contain usable authorization material; the requirement concerns whether telemetry itself leaks credentials, so corrective follow-through follows initial protection.
Question 779
Before granting routine access again, the team reviews this case: The team restores a web application from backup but leaves a stolen API token active in its environment. What must the response owner validate as part of safe recovery?
- Validate token updates across dependent services and regression-test business functions
- Revoke and replace exposed API tokens before reopening access
- Restore verified pricing and obtain merchant-owner validation
- Use scoped short-lived credentials and secret-rotation procedures
Explanation
Correct Answer
A:Recovery should eliminate secret reuse without breaking integrations; the affected workflow should not be considered trusted until the issue of whether restored service credentials remain compromised is resolved.
Incorrect Answers
B:Identity containment closes the attacker's independent access path; for whether restored service credentials remain compromised, temporary protection does not complete correction; trusted restoration remains necessary.
C:Recovery must correct attacker modifications, not just restore uptime; the activity targets whether restored data has business integrity; trusted restoration here concerns whether restored service credentials remain compromised.
D:Controlled secrets reduce lasting impact from web compromises; the goal is trusted restoration for whether restored service credentials remain compromised. Future hardening is not current-state recovery.
Question 780
An improvement plan must address recurrence after this case: A retail application is back online but attackers altered product prices during the intrusion. What should the owner add to the normal control review to reduce recurrence?
- Compare affected catalog records with approved price histories and audit logs
- Restore verified pricing and obtain merchant-owner validation
- Monitor high-risk administrative data changes with approval workflows
- Automate security regression suites for high-risk access paths
Explanation
Correct Answer
C:Business integrity auditing catches malicious edits; the ongoing control is targeted at whether restored data has business integrity, rather than a one-time emergency fix.
Incorrect Answers
A:Availability does not show whether price data is trustworthy; an investigation is not recurrence prevention in the decision about whether restored data has business integrity.
B:Recovery must correct attacker modifications, not just restore uptime; the case needs recurrence prevention addressing whether restored data has business integrity; case recovery is not future-risk control.
D:Continuous tests reduce security regressions during emergency patches; this serves whether regression testing covers security boundaries, whereas the requested result is recurrence prevention involving whether restored data has business integrity.