Question 1160
The recurrence-prevention decision is based on this report: A desktop triggers a false positive on a signed internal updater after a new security policy rollout. What measure strengthens readiness against the observed event?
- Maintain release-aware allowlisting with expiration and review
- Check signer, release manifest, deployment schedule and process actions
- Tune the specific rule and document tested expected execution
- Maintain signed package inventory and change-aware endpoint detections
Explanation
Correct Answer
A:Controlled exception lifecycles reduce recurring alerts; the ongoing control is targeted at whether the alert is a benign software change, rather than a one-time emergency fix.
Incorrect Answers
B:Authenticity and expected behavior can support a false-positive conclusion; the goal is recurrence prevention for whether the alert is a benign software change. An investigation is not recurrence prevention.
C:Recovery restores normal updates without sacrificing coverage; case recovery is not future-risk control in the decision about whether the alert is a benign software change.
D:Context reduces incorrect persistence alerts; that method could help with whether the service change is authorized; the recurrence prevention decision here involves whether the alert is a benign software change.
Question 1161
The coordinator needs corrective action rather than another alert. The event was: An industrial workstation runs unsupported operating-system software that cannot be patched during continuous production. Which follow-through step verifies the weakness was removed?
- Constrain access to approved protocols and maintenance systems
- Use asset inventory, virtual patching and controlled maintenance windows
- Schedule vendor-supported upgrades and validate equipment behavior in staging
- Schedule verified firmware or logic restoration during an authorized safe state
Explanation
Correct Answer
C:Safe recovery plans respect process dependencies; the recovery decision is tied to whether compensating controls can reduce endpoint risk, not merely to reduced alert volume.
Incorrect Answers
A:Segmentation reduces exposure without untested production changes; when judging whether compensating controls can reduce endpoint risk, temporary protection does not complete correction; this is instead initial containment or preservation.
B:Compensating controls reduce risk until supported updates are possible; for whether compensating controls can reduce endpoint risk, future hardening is not current-state recovery; trusted restoration remains necessary.
D:OT recovery should not bypass maintenance interlocks; the other incident centers on whether reboot is operationally safe, not this trusted restoration question about whether compensating controls can reduce endpoint risk.
Question 1162
Post-containment analysis identified this issue for correction: A user's laptop is sending rare-domain DNS queries but endpoint security shows no malware detection. Which targeted analysis or corrective follow-up determines what trusted recovery requires?
- Investigate the responsible process and clean or rebuild as findings require
- Join DNS events with process command line and installed extension activity
- Apply controlled outbound isolation and capture volatile endpoint state
- Enable DNS and endpoint behavioral correlation
- Document the disposition and tune detection to the approved deployment identity
- Rebuild the endpoint, re-enroll EDR and verify kernel-extension controls and telemetry
Explanation
Correct Answer
A:Response follows the observed execution mechanism; response staff can use these findings about whether a negative signature alert rules out compromise to decide what eradication and recovery actually require.
Incorrect Answers
B:Behavioral evidence can reveal threats that static signatures miss; the requirement concerns whether a negative signature alert rules out compromise, so verification is not the corrective step.
C:Caution is warranted when an active channel may exist; the goal is post-containment assessment for whether a negative signature alert rules out compromise. Temporary protection does not complete correction.
D:Layered telemetry covers gaps in signature detections; future hardening is not current-state recovery in the decision about whether a negative signature alert rules out compromise.
E:Accurate closure retains visibility for future malicious variants; it is meant to address whether the service change is authorized, not post-containment assessment for whether a negative signature alert rules out compromise.
F:Restoring agent trust and tested kernel controls validates monitoring after the unauthorized extension is removed; the relevant condition for that step is whether kernel-level changes caused endpoint sensor loss, which is not shown for whether a negative signature alert rules out compromise.
Question 1163
A case advances from immediate protection to root-cause correction after: A managed Android phone is rooted, causing device-attestation checks to fail during corporate access. Which verified recovery step is appropriate after initial containment?
- Reprovision on a verified supported device and review exposed sessions
- Block access from the noncompliant device through conditional policy
- Reset credentials and examine affected SaaS application grants
- Require device integrity attestation for sensitive mobile access
Explanation
Correct Answer
A:Trust restoration requires an approved system state; it is the corrective action needed for whether platform integrity meets access policy after the immediate hazard is controlled.
Incorrect Answers
B:Identity gating reduces risk without treating an attestation result as proof of a specific exploit; the case needs trusted restoration addressing whether platform integrity meets access policy; temporary protection does not complete correction.
C:The risk extends to applications accessible through the stolen session; the activity targets whether mobile-origin credentials were used elsewhere; trusted restoration here concerns whether platform integrity meets access policy.
D:Conditional access limits compromised or unmanaged platforms; for whether platform integrity meets access policy, future hardening is not current-state recovery; trusted restoration remains necessary.
Question 1164
A control owner is preparing preventive actions after observing: A plant engineer proposes rebooting a suspected compromised controller during an active batch process. What tested hardening or process measure follows from the lessons learned?
- Schedule verified firmware or logic restoration during an authorized safe state
- Document essential OT data flows and rehearse containment ACLs
- Build incident runbooks around process hazards and safe shutdown windows
- Consult process state, fail-safe design and vendor maintenance guidance
Explanation
Correct Answer
C:Preparation prevents unsafe response actions; it makes the lesson about whether reboot is operationally safe part of normal operations.
Incorrect Answers
A:OT recovery should not bypass maintenance interlocks; when judging whether reboot is operationally safe, case recovery is not future-risk control; this is instead trusted restoration.
B:Prevalidated rules reduce accidental outages; the other incident centers on whether containment interrupted process monitoring, not this recurrence prevention question about whether reboot is operationally safe.
D:A routine IT reboot can interrupt industrial equipment unpredictably; the goal is recurrence prevention for whether reboot is operationally safe. An investigation is not recurrence prevention.
Question 1165
The coordinator needs corrective action rather than another alert. The event was: An OT network sees new programming commands to a PLC from a workstation that normally only displays status. Which follow-through step verifies the weakness was removed?
- Restrict engineering protocol writes from the suspect station under OT change control
- Compare PLC programming audit, source identity and authorized engineering schedule
- Allowlist engineering workstations and monitor PLC program changes
- Verify PLC logic against approved baseline and validate process behavior
- Validate historian ingestion and independent process alarm visibility
Explanation
Correct Answer
D:Recovery requires safe controller state confirmation; the recovery decision is tied to whether a nonengineering station initiated controller changes, not merely to reduced alert volume.
Incorrect Answers
A:Write-path containment protects controller logic while preserving monitoring; when judging whether a nonengineering station initiated controller changes, temporary protection does not complete correction; this is instead initial containment or preservation.
B:Command type and workstation role help identify unauthorized modification; for whether a nonengineering station initiated controller changes, verification is not the corrective step; trusted restoration remains necessary.
C:Separated roles reduce unauthorized logic updates; the requirement concerns whether a nonengineering station initiated controller changes, so future hardening is not current-state recovery.
E:Recovery should confirm trustworthy monitoring has resumed; it is meant to address whether containment interrupted process monitoring, not trusted restoration for whether a nonengineering station initiated controller changes.
Question 1166
The incident is resolved, but its root weakness still requires policy attention: A mobile app installed from an unofficial store requests accessibility permissions and begins reading banking notifications. What durable process or monitoring change would make a repeat less likely?
- Remove the app through managed procedures and assess exposed accounts
- Inspect app source, granted accessibility permissions and notification access
- Use managed configuration profile controls and certificate governance
- Control app installation sources and monitor high-risk permission grants
Explanation
Correct Answer
D:Permission governance reduces mobile spyware exposure; a periodic review of this safeguard can track the risk described by whether abuse of accessibility services is occurring.
Incorrect Answers
A:Recovery includes the information the app may have observed; case recovery is not future-risk control in the decision about whether abuse of accessibility services is occurring.
B:Excessive privileges can enable sensitive content capture without conventional malware files; the case needs recurrence prevention addressing whether abuse of accessibility services is occurring; an investigation is not recurrence prevention.
C:Approved enrollment prevents silent network trust changes; it is meant to address whether configuration profiles redirect or intercept traffic, not recurrence prevention for whether abuse of accessibility services is occurring.
Question 1167
The initial scene or threat protection decision concerns the following: A remote maintenance vendor connects to an industrial gateway from an unapproved device with a previously issued credential. How should responders limit the damage while retaining the investigation trail?
- Rotate vendor credentials and inspect changes made during the session
- Review vendor session recording, gateway logs and maintenance authorization
- Constrain access to approved protocols and maintenance systems
- Terminate the unauthorized vendor session through site procedure
Explanation
Correct Answer
D:Remote access containment reduces the risk of controller manipulation; the protective decision should be recorded and its effect tested against whether vendor remote access was misused.
Incorrect Answers
A:Recovery includes process configuration and identity review; for whether vendor remote access was misused, corrective follow-through follows initial protection; initial containment or preservation remains necessary.
B:A valid credential does not prove the connection was approved; the requirement concerns whether vendor remote access was misused, so investigation alone does not control current conditions.
C:Segmentation reduces exposure without untested production changes; it is meant to address whether compensating controls can reduce endpoint risk, not initial containment or preservation for whether vendor remote access was misused.
Question 1168
After technical restoration, responders document the weakness exposed by: An IoT sensor remains reachable over a legacy Telnet service used only during installation. Which long-term control would reduce exposure to this specific pattern?
- Enforce unique device credentials and isolated management networks
- Disable or firewall Telnet access through approved device controls
- Require secure-by-default device commissioning checklists
- Move maintenance to a supported secure management interface and audit access
- Inspect listening services, authentication records and asset configuration
Explanation
Correct Answer
C:Hardening at install time prevents dormant weaknesses; the assurance measure is designed around whether an unnecessary remote service exposes device control, rather than hiding the reported activity.
Incorrect Answers
A:IoT devices should not depend on factory defaults; that method could help with whether weak device identity enabled unauthorized access; the recurrence prevention decision here involves whether an unnecessary remote service exposes device control.
B:Service containment limits remote command entry; the requirement concerns whether an unnecessary remote service exposes device control, so one-time protection is not durable prevention.
D:Recovery removes the unsafe legacy path; case recovery is not future-risk control in the decision about whether an unnecessary remote service exposes device control.
E:An unused plaintext management protocol increases attack surface; the case needs recurrence prevention addressing whether an unnecessary remote service exposes device control; an investigation is not recurrence prevention.
Question 1169
The team has retained the initial evidence and is assessing recovery from: An endpoint reports repeated failed logons followed by one successful privileged login from an unfamiliar process. What restoration task closes the identified integrity or control gap?
- Revoke the questionable session and restrict the affected account
- Correlate logon success, process origin and subsequent privileged actions
- Reset compromised credentials and review all privileged changes
- Investigate credential material exposure, rotate accounts and remove tooling
- Detect failed-to-successful login sequences and enforce MFA
Explanation
Correct Answer
C:Restoration requires checking what happened after login; the owner can validate the correction against the evidence bearing on whether password guessing became successful access.
Incorrect Answers
A:Identity containment limits use of the newly gained access; the goal is trusted restoration for whether password guessing became successful access. Temporary protection does not complete correction.
B:A successful authentication after failures can signal an active compromise; verification is not the corrective step in the decision about whether password guessing became successful access.
D:Recovery must consider identity compromise even if the process exits; the other incident centers on whether credential dumping was attempted, not this trusted restoration question about whether password guessing became successful access.
E:Contextual authentication analytics improves detection; for whether password guessing became successful access, future hardening is not current-state recovery; trusted restoration remains necessary.
Question 1170
The first task is to corroborate an alert. The case notes state: An iPhone user accepts an untrusted mobile configuration profile that adds a suspicious VPN and root certificate. What should the investigator examine to distinguish a substantiated finding from an assumption?
- Correlate mobile browser events with identity provider sign-in and token activity
- Use managed configuration profile controls and certificate governance
- Remove the unauthorized profile under managed procedures and revoke exposed sessions
- Inspect installed profiles, certificate trust and VPN routing configuration
Explanation
Correct Answer
D:Unapproved profiles can alter both traffic paths and trusted certificate authorities; this permits a traceable finding about whether configuration profiles redirect or intercept traffic before the team makes a disruptive change.
Incorrect Answers
A:The compromised credential may have been replayed from a different device; the relevant condition for that step is whether mobile-origin credentials were used elsewhere, which is not shown for whether configuration profiles redirect or intercept traffic.
B:Approved enrollment prevents silent network trust changes; the goal is evidence validation for whether configuration profiles redirect or intercept traffic. Prevention is not incident verification.
C:Containment stops routing through the suspect configuration; immediate protection does not substantiate findings in the decision about whether configuration profiles redirect or intercept traffic.