ECCouncil 212-89 (EC-Council Certified Incident Handler) Practice Test 119

Question 1180

Before granting routine access again, the team reviews this case: A remote maintenance vendor connects to an industrial gateway from an unapproved device with a previously issued credential. What must the response owner validate as part of safe recovery?

  1. Use supervised time-bound vendor access with device trust checks
  2. Rotate vendor credentials and inspect changes made during the session
  3. Schedule vendor-supported upgrades and validate equipment behavior in staging
  4. Terminate the unauthorized vendor session through site procedure

Explanation

Correct Answer

B:

Recovery includes process configuration and identity review; technical closure should demonstrate that the control gap behind whether vendor remote access was misused is actually corrected.

Incorrect Answers

A:

Controlled maintenance reduces latent remote entry points; when judging whether vendor remote access was misused, future hardening is not current-state recovery; this is instead recurrence prevention.

C:

Safe recovery plans respect process dependencies; the activity targets whether compensating controls can reduce endpoint risk; trusted restoration here concerns whether vendor remote access was misused.

D:

Remote access containment reduces the risk of controller manipulation; the goal is trusted restoration for whether vendor remote access was misused. Temporary protection does not complete correction.

Question 1181

A containment decision is required for this incident: A privileged user installs an unsigned kernel extension and endpoint monitoring stops reporting immediately afterward. What action constrains the incident at the affected point of control?

  1. Rebuild the endpoint, re-enroll EDR and verify kernel-extension controls and telemetry
  2. Apply independent network quarantine if host-based controls are unreliable
  3. Compare driver load, security-agent crash and administrative action timestamps
  4. Suspend the responsible process and isolate the laptop from file shares

Explanation

Correct Answer

B:

An untrusted endpoint agent may be unable to enforce isolation; the immediate response addresses whether kernel-level changes caused endpoint sensor loss while the team preserves relevant case records.

Incorrect Answers

A:

Restoring agent trust and tested kernel controls validates monitoring after the unauthorized extension is removed; corrective follow-through follows initial protection in the decision about whether kernel-level changes caused endpoint sensor loss.

C:

The close sequence may indicate an intentional driver-based evasion attempt; when judging whether kernel-level changes caused endpoint sensor loss, investigation alone does not control current conditions; this is instead evidence validation.

D:

Stopping writes limits immediate file damage and propagation; this serves whether ransomware encryption has begun, whereas the requested result is initial containment or preservation involving whether kernel-level changes caused endpoint sensor loss.

Question 1182

Before destructive cleanup is authorized, the team faces this situation: A network camera still uses a default administrator password and exposes its control interface to the internet. Which protective response should the coordinator authorize now?

  1. Upgrade supported firmware and validate camera configuration after compromise review
  2. Block external management access and change the compromised password
  3. Disable or firewall Telnet access through approved device controls
  4. Review camera authentication logs, firmware and management interface exposure

Explanation

Correct Answer

B:

Immediate restrictions limit remote control; the protective decision should be recorded and its effect tested against whether weak device identity enabled unauthorized access.

Incorrect Answers

A:

Recovery must address both access and possible persistent settings; for whether weak device identity enabled unauthorized access, corrective follow-through follows initial protection; initial containment or preservation remains necessary.

C:

Service containment limits remote command entry; the activity targets whether an unnecessary remote service exposes device control; initial containment or preservation here concerns whether weak device identity enabled unauthorized access.

D:

Default credentials plus public reachability create a straightforward entry path; investigation alone does not control current conditions in the decision about whether weak device identity enabled unauthorized access.

Question 1183

The team needs temporary protection and must retain evidence. The observed event is: A tablet fleet has no procedure to issue supervised remote locks after devices are reported stolen. What narrowly scoped action would best control the immediate risk?

  1. Use passive telemetry and coordinate containment with OT engineers
  2. Issue an authorized lock and revoke exposed account sessions
  3. Review MDM enrollment, last check-in and available lock commands
  4. Record device loss, assess local encryption and rotate relevant credentials

Explanation

Correct Answer

B:

Identity revocation is important even if the offline device cannot receive a command; this is a first-response safeguard for whether mobile device management can contain loss, not a substitute for full root-cause analysis.

Incorrect Answers

A:

Safety and operational continuity govern intervention choices; that method could help with whether the equipment vendor approves the proposed scanner for this controller; the initial containment or preservation decision here involves whether mobile device management can contain loss.

C:

Device management capabilities depend on enrollment and connectivity; when judging whether mobile device management can contain loss, investigation alone does not control current conditions; this is instead evidence validation.

D:

Recovery addresses information risk beyond physical hardware; for whether mobile device management can contain loss, corrective follow-through follows initial protection; initial containment or preservation remains necessary.

Question 1184

Before granting routine access again, the team reviews this case: A field workstation is disconnected from the corporate network for weeks, so its EDR agent receives no policies or updates. What must the response owner validate as part of safe recovery?

  1. Use offline-capable controls and reconnect compliance checks
  2. Limit access to high-value services until the device synchronizes and is assessed
  3. Update security policy, replay local telemetry and validate endpoint health
  4. Revalidate device trust and account sessions before restoring application access

Explanation

Correct Answer

C:

Recovery confirms the returning device has a trusted security state; technical closure should demonstrate that the control gap behind whether intermittent devices retain protective coverage is actually corrected.

Incorrect Answers

A:

Remote endpoints need protection between central connections; when judging whether intermittent devices retain protective coverage, future hardening is not current-state recovery; this is instead recurrence prevention.

B:

A trust gate prevents stale endpoints from rejoining blindly; for whether intermittent devices retain protective coverage, temporary protection does not complete correction; trusted restoration remains necessary.

D:

Recovery must include client integrity and identity state; this serves whether endpoints can bypass server-centric protection, whereas the requested result is trusted restoration involving whether intermittent devices retain protective coverage.

Question 1185

An improvement plan must address recurrence after this case: An OT network sees new programming commands to a PLC from a workstation that normally only displays status. What should the owner add to the normal control review to reduce recurrence?

  1. Verify PLC logic against approved baseline and validate process behavior
  2. Use change approval, role segregation and process anomaly detection
  3. Allowlist engineering workstations and monitor PLC program changes
  4. Compare PLC programming audit, source identity and authorized engineering schedule

Explanation

Correct Answer

C:

Separated roles reduce unauthorized logic updates; a periodic review of this safeguard can track the risk described by whether a nonengineering station initiated controller changes.

Incorrect Answers

A:

Recovery requires safe controller state confirmation; case recovery is not future-risk control in the decision about whether a nonengineering station initiated controller changes.

B:

Safety-aware controls detect unauthorized setpoint modifications; the other incident centers on whether physical process safety is at risk, not this recurrence prevention question about whether a nonengineering station initiated controller changes.

D:

Command type and workstation role help identify unauthorized modification; for whether a nonengineering station initiated controller changes, an investigation is not recurrence prevention; recurrence prevention remains necessary.

Question 1186

The first task is to corroborate an alert. The case notes state: A mobile app installed from an unofficial store requests accessibility permissions and begins reading banking notifications. What should the investigator examine to distinguish a substantiated finding from an assumption?

  1. Inspect installed profiles, certificate trust and VPN routing configuration
  2. Inspect app source, granted accessibility permissions and notification access
  3. Control app installation sources and monitor high-risk permission grants
  4. Disable the suspicious app and restrict sensitive mobile sessions

Explanation

Correct Answer

B:

Excessive privileges can enable sensitive content capture without conventional malware files; it makes the determination of whether abuse of accessibility services is occurring defensible and reviewable by the incident owner.

Incorrect Answers

A:

Unapproved profiles can alter both traffic paths and trusted certificate authorities; the relevant condition for that step is whether configuration profiles redirect or intercept traffic, which is not shown for whether abuse of accessibility services is occurring.

C:

Permission governance reduces mobile spyware exposure; prevention is not incident verification in the decision about whether abuse of accessibility services is occurring.

D:

Containment prevents continued observation of protected notifications; the case needs evidence validation addressing whether abuse of accessibility services is occurring; immediate protection does not substantiate findings.

Question 1187

Post-containment analysis identified this issue for correction: An EDR alert shows a suspicious executable launched by a legitimate remote administration utility. Which remediation is supported by the observed root-cause conditions?

  1. Correlate remote session identity, process tree and execution time
  2. Restrict remote assistance tools and record privileged sessions
  3. Revoke unauthorized remote sessions and isolate the affected host
  4. Analyze the artifact and remove persistence if compromise is confirmed
  5. Remove the launched payload, verify the support agent and restrict permitted child execution

Explanation

Correct Answer

E:

Trusted agent state and restricted child processes prevent the sanctioned tool from silently relaunching the same payload; the change should be tested before unrestricted operations resume for the event involving whether a remote-management tool was abused.

Incorrect Answers

A:

A legitimate support binary can still start attacker-controlled commands; for whether a remote-management tool was abused, verification is not the corrective step; trusted restoration remains necessary.

B:

Approved support tooling improves auditability; the requirement concerns whether a remote-management tool was abused, so future hardening is not current-state recovery.

C:

Access-path containment is essential beyond blocking one file; the goal is trusted restoration for whether a remote-management tool was abused. Temporary protection does not complete correction.

D:

A defensible outcome follows evidence rather than filename alone; the activity targets what corroborates suspicious endpoint execution; trusted restoration here concerns whether a remote-management tool was abused.

Question 1188

An evidence-led review starts with the following report: A plant engineer proposes rebooting a suspected compromised controller during an active batch process. What investigation should establish the disputed activity and its timeline?

  1. Use plant-approved protective actions before any controller power change
  2. Correlate firewall drops, historian flows and controller communications
  3. Schedule verified firmware or logic restoration during an authorized safe state
  4. Build incident runbooks around process hazards and safe shutdown windows
  5. Consult process state, fail-safe design and vendor maintenance guidance

Explanation

Correct Answer

E:

A routine IT reboot can interrupt industrial equipment unpredictably; the objective is to establish whether reboot is operationally safe; the result can then guide the later protective decision.

Incorrect Answers

A:

Physical safety and continuity determine acceptable containment; when judging whether reboot is operationally safe, immediate protection does not substantiate findings; this is instead initial containment or preservation.

B:

The emergency rule may have blocked legitimate telemetry rather than attacker control; the other incident centers on whether containment interrupted process monitoring, not this evidence validation question about whether reboot is operationally safe.

C:

OT recovery should not bypass maintenance interlocks; the requirement concerns whether reboot is operationally safe, so recovery is not factual verification.

D:

Preparation prevents unsafe response actions; the goal is evidence validation for whether reboot is operationally safe. Prevention is not incident verification.

Question 1189

The team has retained the initial evidence and is assessing recovery from: An industrial controller vendor prohibits untested security agents, but the SOC intends to install a standard endpoint scanner during an incident. What restoration task closes the identified integrity or control gap?

  1. Maintain OT-specific tool approvals and isolated test environments
  2. Confirm vendor support, process dependencies and authorized maintenance procedures
  3. Collect evidence through vendor-approved interfaces and validate control functionality
  4. Tune debug verbosity and verify investigation events remain available
  5. Use passive telemetry and coordinate containment with OT engineers

Explanation

Correct Answer

C:

Supported methods preserve reliability while investigating; the resulting state needs verification against the original concern: whether the equipment vendor approves the proposed scanner for this controller.

Incorrect Answers

A:

Preparation avoids dangerous production experiments; the goal is trusted restoration for whether the equipment vendor approves the proposed scanner for this controller. Future hardening is not current-state recovery.

B:

Unvalidated software can disrupt controllers and physical operations; verification is not the corrective step in the decision about whether the equipment vendor approves the proposed scanner for this controller.

D:

A balanced configuration preserves high-value evidence; it is meant to address whether security telemetry capacity is adequate, not trusted restoration for whether the equipment vendor approves the proposed scanner for this controller.

E:

Safety and operational continuity govern intervention choices; for whether the equipment vendor approves the proposed scanner for this controller, temporary protection does not complete correction; trusted restoration remains necessary.

Question 1190

A case is escalated for independent verification after this finding: Endpoint event logs are overwritten after a few hours because an application generates noisy debug events. What collection or comparison would validate the reported condition?

  1. Prioritize export of security-critical events to central storage
  2. Measure event volume, retention settings and off-host forwarding latency
  3. Include event-retention performance tests in endpoint baselines
  4. Review MDM enrollment, last check-in and available lock commands

Explanation

Correct Answer

B:

Noisy logs can crowd out security events before collection; it makes the determination of whether security telemetry capacity is adequate defensible and reviewable by the incident owner.

Incorrect Answers

A:

Protected off-device logs survive local overwrite; immediate protection does not substantiate findings in the decision about whether security telemetry capacity is adequate.

C:

Capacity planning improves forensic readiness; when judging whether security telemetry capacity is adequate, prevention is not incident verification; this is instead recurrence prevention.

D:

Device management capabilities depend on enrollment and connectivity; the other incident centers on whether mobile device management can contain loss, not this evidence validation question about whether security telemetry capacity is adequate.

EC-Council Certified Incident Handler (212-89) Practice Tests