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CompTIA CySA+ (CS0-003) CS0-003 Practice Test 7

Question 60

A helpdesk employee receives a message with a link displaying the payroll portal name but resolving to a different newly registered domain. Which residual risk should remain on the analyst’s watch list?

  1. Compromised legitimate mail accounts could send fully authenticated phishing messages later.
  2. Attackers can use compromised reputable websites instead of newly registered domains.
  3. Other recipients may have followed the same malicious link before the alert was raised.
  4. A phishing page may adopt a different visual theme without changing the credential-harvesting technique.

Explanation

Correct Answer

B:

The response does not eliminate all future or hidden exposures. This particular follow-on issue is connected to the case: Attackers can use compromised reputable websites instead of newly registered domains. The initial control is: Analyze the final URL and message headers in a safe environment and warn recipients before credential entry.

Incorrect Answers

A:

Compromised legitimate mail accounts could send fully authenticated phishing messages later. This is a conceivable secondary or conditional concern, but is not the residual exposure most directly tied to the scenario and its chosen response. Attackers can use compromised reputable websites instead of newly registered domains.

C:

Other recipients may have followed the same malicious link before the alert was raised. This is a conceivable secondary or conditional concern, but is not the residual exposure most directly tied to the scenario and its chosen response. Attackers can use compromised reputable websites instead of newly registered domains.

D:

A phishing page may adopt a different visual theme without changing the credential-harvesting technique. This concerns an adjacent administrative, operational or conditional risk, not the particular continuing weakness supported most directly by A helpdesk employee receives a message with a link displaying the payroll portal name but resolving to a different newly registered domain. The specific case-derived residual is: Attackers can use compromised reputable websites instead of newly registered domains.

Question 61

A web application logs repeated requests for sequential account identifiers from one session, including responses belonging to other users. Which immediate next step best matches the observed evidence?

  1. Rate-limit sequential requests without correcting the missing object authorization.
  2. Determine whether object-level authorization is missing and preserve request and response evidence while blocking abuse.
  3. Change the account identifier format while still allowing cross-account reads.
  4. Hide other users' report links in the interface but leave the API accessible.

Explanation

Correct Answer

B:

The selected step uses the available evidence proportionately and directly addresses the specific condition. The governing technical issue is: Sequential identifier access that returns other users' data suggests broken object-level access control. The relevant next action is: Determine whether object-level authorization is missing and preserve request and response evidence while blocking abuse.

Incorrect Answers

A:

Rate-limit sequential requests without correcting the missing object authorization. This option does not establish the stated result with sufficient evidence. Sequential identifier access that returns other users' data suggests broken object-level access control. The case therefore requires a different action: Determine whether object-level authorization is missing and preserve request and response evidence while blocking abuse.

C:

Change the account identifier format while still allowing cross-account reads. This option does not establish the stated result with sufficient evidence. Sequential identifier access that returns other users' data suggests broken object-level access control. The case therefore requires a different action: Determine whether object-level authorization is missing and preserve request and response evidence while blocking abuse.

D:

Hide other users' report links in the interface but leave the API accessible. This option does not establish the stated result with sufficient evidence. Sequential identifier access that returns other users' data suggests broken object-level access control. The case therefore requires a different action: Determine whether object-level authorization is missing and preserve request and response evidence while blocking abuse.

Question 62

A web application logs repeated requests for sequential account identifiers from one session, including responses belonging to other users. Which inference most directly connects the evidence with the underlying security issue?

  1. Sequential identifier access that returns other users' data suggests broken object-level access control.
  2. Sequential IDs alone are the vulnerability even if every object request is authorized.
  3. A valid logged-in session inherently grants permission to other users' objects.
  4. The issue is solely a database indexing performance defect.

Explanation

Correct Answer

A:

This interpretation explains the observation without treating a clue as proof beyond its scope. The central mechanism is: Sequential identifier access that returns other users' data suggests broken object-level access control. It directs the analyst toward: Determine whether object-level authorization is missing and preserve request and response evidence while blocking abuse.

Incorrect Answers

B:

Sequential IDs alone are the vulnerability even if every object request is authorized. This alternative causal claim assumes facts beyond the observation, which is: A web application logs repeated requests for sequential account identifiers from one session, including responses belonging to other users. The directly supported mechanism is: Sequential identifier access that returns other users' data suggests broken object-level access control.

C:

A valid logged-in session inherently grants permission to other users' objects. This alternative causal claim assumes facts beyond the observation, which is: A web application logs repeated requests for sequential account identifiers from one session, including responses belonging to other users. The directly supported mechanism is: Sequential identifier access that returns other users' data suggests broken object-level access control.

D:

The issue is solely a database indexing performance defect. This alternative causal claim assumes facts beyond the observation, which is: A web application logs repeated requests for sequential account identifiers from one session, including responses belonging to other users. The directly supported mechanism is: Sequential identifier access that returns other users' data suggests broken object-level access control.

Question 63

A web application logs repeated requests for sequential account identifiers from one session, including responses belonging to other users. Which observation would provide the clearest objective proof of success?

  1. Request volume drops under throttling but a single cross-account read still works.
  2. An authorized test proves cross-account data exposure and verifies the fixed authorization check rejects it.
  3. Identifiers become random while direct object requests reveal unauthorized data.
  4. The navigation menu hides links but API calls continue returning other accounts' records.

Explanation

Correct Answer

B:

This check measures the particular condition that the response was intended to change, rather than unrelated activity or a generic dashboard count. Specifically: An authorized test proves cross-account data exposure and verifies the fixed authorization check rejects it. It tests whether: Determine whether object-level authorization is missing and preserve request and response evidence while blocking abuse.

Incorrect Answers

A:

Request volume drops under throttling but a single cross-account read still works. This test or metric does not demonstrate the complete target effect of Determine whether object-level authorization is missing and preserve request and response evidence while blocking abuse. The decisive observable confirmation is: An authorized test proves cross-account data exposure and verifies the fixed authorization check rejects it.

C:

Identifiers become random while direct object requests reveal unauthorized data. This test or metric does not demonstrate the complete target effect of Determine whether object-level authorization is missing and preserve request and response evidence while blocking abuse. The decisive observable confirmation is: An authorized test proves cross-account data exposure and verifies the fixed authorization check rejects it.

D:

The navigation menu hides links but API calls continue returning other accounts' records. This test or metric does not demonstrate the complete target effect of Determine whether object-level authorization is missing and preserve request and response evidence while blocking abuse. The decisive observable confirmation is: An authorized test proves cross-account data exposure and verifies the fixed authorization check rejects it.

Question 64

A web application logs repeated requests for sequential account identifiers from one session, including responses belonging to other users. Which residual risk should remain on the analyst’s watch list?

  1. An authorized service account might retain unnecessary bulk-report export privileges.
  2. An application inventory may not yet list the affected API under its current criticality tier.
  3. Other endpoints may share the same access-control flaw even after one route is patched.
  4. Audit logging on permitted document reads may be insufficient for a later scope investigation.

Explanation

Correct Answer

C:

The response does not eliminate all future or hidden exposures. This particular follow-on issue is connected to the case: Other endpoints may share the same access-control flaw even after one route is patched. The initial control is: Determine whether object-level authorization is missing and preserve request and response evidence while blocking abuse.

Incorrect Answers

A:

An authorized service account might retain unnecessary bulk-report export privileges. This is a conceivable secondary or conditional concern, but is not the residual exposure most directly tied to the scenario and its chosen response. Other endpoints may share the same access-control flaw even after one route is patched.

B:

An application inventory may not yet list the affected API under its current criticality tier. This concerns an adjacent administrative, operational or conditional risk, not the particular continuing weakness supported most directly by A web application logs repeated requests for sequential account identifiers from one session, including responses belonging to other users. The specific case-derived residual is: Other endpoints may share the same access-control flaw even after one route is patched.

D:

Audit logging on permitted document reads may be insufficient for a later scope investigation. This is a conceivable secondary or conditional concern, but is not the residual exposure most directly tied to the scenario and its chosen response. Other endpoints may share the same access-control flaw even after one route is patched.

Question 65

A Windows endpoint shows the security event log cleared immediately after an unsigned remote-management binary launched. Which causal explanation is best supported by these facts?

  1. Unexpected clearing of a security log can be defense evasion, especially near other suspicious process activity.
  2. A cleared Windows security log proves all attacker traces were erased everywhere.
  3. The presence of a remote-management tool proves its signer is malicious.
  4. An empty local event log means no relevant upstream records exist.

Explanation

Correct Answer

A:

This interpretation explains the observation without treating a clue as proof beyond its scope. The central mechanism is: Unexpected clearing of a security log can be defense evasion, especially near other suspicious process activity. It directs the analyst toward: Preserve surviving central logs and EDR history and investigate the process execution and account context.

Incorrect Answers

B:

A cleared Windows security log proves all attacker traces were erased everywhere. This alternative causal claim assumes facts beyond the observation, which is: A Windows endpoint shows the security event log cleared immediately after an unsigned remote-management binary launched. The directly supported mechanism is: Unexpected clearing of a security log can be defense evasion, especially near other suspicious process activity.

C:

The presence of a remote-management tool proves its signer is malicious. This alternative causal claim assumes facts beyond the observation, which is: A Windows endpoint shows the security event log cleared immediately after an unsigned remote-management binary launched. The directly supported mechanism is: Unexpected clearing of a security log can be defense evasion, especially near other suspicious process activity.

D:

An empty local event log means no relevant upstream records exist. This alternative causal claim assumes facts beyond the observation, which is: A Windows endpoint shows the security event log cleared immediately after an unsigned remote-management binary launched. The directly supported mechanism is: Unexpected clearing of a security log can be defense evasion, especially near other suspicious process activity.

Question 66

A Windows endpoint shows the security event log cleared immediately after an unsigned remote-management binary launched. How can the team confirm that the targeted risk was addressed?

  1. A new local log begins recording while the earlier process lineage remains unknown.
  2. Central copies of event-clear activity and process metadata tie the action to the executable and responsible identity.
  3. An antivirus check is clear but event-clear and binary metadata are not correlated.
  4. Central collection is enabled now without confirming prior clear-event evidence.

Explanation

Correct Answer

B:

This check measures the particular condition that the response was intended to change, rather than unrelated activity or a generic dashboard count. Specifically: Central copies of event-clear activity and process metadata tie the action to the executable and responsible identity. It tests whether: Preserve surviving central logs and EDR history and investigate the process execution and account context.

Incorrect Answers

A:

A new local log begins recording while the earlier process lineage remains unknown. This test or metric does not demonstrate the complete target effect of Preserve surviving central logs and EDR history and investigate the process execution and account context. The decisive observable confirmation is: Central copies of event-clear activity and process metadata tie the action to the executable and responsible identity.

C:

An antivirus check is clear but event-clear and binary metadata are not correlated. This test or metric does not demonstrate the complete target effect of Preserve surviving central logs and EDR history and investigate the process execution and account context. The decisive observable confirmation is: Central copies of event-clear activity and process metadata tie the action to the executable and responsible identity.

D:

Central collection is enabled now without confirming prior clear-event evidence. This test or metric does not demonstrate the complete target effect of Preserve surviving central logs and EDR history and investigate the process execution and account context. The decisive observable confirmation is: Central copies of event-clear activity and process metadata tie the action to the executable and responsible identity.

Question 67

A Windows endpoint shows the security event log cleared immediately after an unsigned remote-management binary launched. Which caveat most directly applies to the durability of the response?

  1. An earlier local event-log gap may complicate attribution even if central copies are available.
  2. The unsigned tool may have staged persistence on another endpoint before evidence capture.
  3. Local evidence may already be lost if forwarding was delayed or disabled.
  4. A compromised admin identity could remain valid beyond remediation of the log clearing.

Explanation

Correct Answer

C:

The response does not eliminate all future or hidden exposures. This particular follow-on issue is connected to the case: Local evidence may already be lost if forwarding was delayed or disabled. The initial control is: Preserve surviving central logs and EDR history and investigate the process execution and account context.

Incorrect Answers

A:

An earlier local event-log gap may complicate attribution even if central copies are available. This is a conceivable secondary or conditional concern, but is not the residual exposure most directly tied to the scenario and its chosen response. Local evidence may already be lost if forwarding was delayed or disabled.

B:

The unsigned tool may have staged persistence on another endpoint before evidence capture. This is a conceivable secondary or conditional concern, but is not the residual exposure most directly tied to the scenario and its chosen response. Local evidence may already be lost if forwarding was delayed or disabled.

D:

A compromised admin identity could remain valid beyond remediation of the log clearing. This is a conceivable secondary or conditional concern, but is not the residual exposure most directly tied to the scenario and its chosen response. Local evidence may already be lost if forwarding was delayed or disabled.

Question 68

A switch-monitoring system reports new outbound SMB connections from dozens of employee laptops to a single unapproved peer. What should the analyst do to manage this specific risk responsibly?

  1. Identify the peer and initiating processes, confirm whether file-sharing activity is authorized, and assess lateral movement scope.
  2. Block all SMB ports internally without identifying the fan-in peer or authorized file sharing.
  3. Assume that SMB sessions to one host prove internet data exfiltration.
  4. Review only aggregate switch flows and omit user, share and endpoint provenance.

Explanation

Correct Answer

A:

The selected step uses the available evidence proportionately and directly addresses the specific condition. The governing technical issue is: Unexpected SMB fan-in can indicate unauthorized file sharing or lateral movement, not necessarily internet data transfer. The relevant next action is: Identify the peer and initiating processes, confirm whether file-sharing activity is authorized, and assess lateral movement scope.

Incorrect Answers

B:

Block all SMB ports internally without identifying the fan-in peer or authorized file sharing. This option does not establish the stated result with sufficient evidence. Unexpected SMB fan-in can indicate unauthorized file sharing or lateral movement, not necessarily internet data transfer. The case therefore requires a different action: Identify the peer and initiating processes, confirm whether file-sharing activity is authorized, and assess lateral movement scope.

C:

Assume that SMB sessions to one host prove internet data exfiltration. This option does not establish the stated result with sufficient evidence. Unexpected SMB fan-in can indicate unauthorized file sharing or lateral movement, not necessarily internet data transfer. The case therefore requires a different action: Identify the peer and initiating processes, confirm whether file-sharing activity is authorized, and assess lateral movement scope.

D:

Review only aggregate switch flows and omit user, share and endpoint provenance. This option does not establish the stated result with sufficient evidence. Unexpected SMB fan-in can indicate unauthorized file sharing or lateral movement, not necessarily internet data transfer. The case therefore requires a different action: Identify the peer and initiating processes, confirm whether file-sharing activity is authorized, and assess lateral movement scope.

Question 69

A switch-monitoring system reports new outbound SMB connections from dozens of employee laptops to a single unapproved peer. Which causal explanation is best supported by these facts?

  1. Outbound SMB fan-in necessarily means that ransomware has already encrypted files.
  2. A high connection count proves the peer is outside the enterprise network.
  3. The event is benign whenever the destination host advertises a file-share service.
  4. Unexpected SMB fan-in can indicate unauthorized file sharing or lateral movement, not necessarily internet data transfer.

Explanation

Correct Answer

D:

This interpretation explains the observation without treating a clue as proof beyond its scope. The central mechanism is: Unexpected SMB fan-in can indicate unauthorized file sharing or lateral movement, not necessarily internet data transfer. It directs the analyst toward: Identify the peer and initiating processes, confirm whether file-sharing activity is authorized, and assess lateral movement scope.

Incorrect Answers

A:

Outbound SMB fan-in necessarily means that ransomware has already encrypted files. This alternative causal claim assumes facts beyond the observation, which is: A switch-monitoring system reports new outbound SMB connections from dozens of employee laptops to a single unapproved peer. The directly supported mechanism is: Unexpected SMB fan-in can indicate unauthorized file sharing or lateral movement, not necessarily internet data transfer.

B:

A high connection count proves the peer is outside the enterprise network. This alternative causal claim assumes facts beyond the observation, which is: A switch-monitoring system reports new outbound SMB connections from dozens of employee laptops to a single unapproved peer. The directly supported mechanism is: Unexpected SMB fan-in can indicate unauthorized file sharing or lateral movement, not necessarily internet data transfer.

C:

The event is benign whenever the destination host advertises a file-share service. This alternative causal claim assumes facts beyond the observation, which is: A switch-monitoring system reports new outbound SMB connections from dozens of employee laptops to a single unapproved peer. The directly supported mechanism is: Unexpected SMB fan-in can indicate unauthorized file sharing or lateral movement, not necessarily internet data transfer.

Question 70

A switch-monitoring system reports new outbound SMB connections from dozens of employee laptops to a single unapproved peer. How can the team confirm that the targeted risk was addressed?

  1. Port-445 traffic ceases after a blanket firewall rule but session ownership remains unknown.
  2. Confirm that the switches recorded outbound TCP 445 sessions, without identifying the initiating endpoint process, SMB peer or accessed share.
  3. A flow chart shows connecting laptops but no accessed shares or authentication attempts.
  4. Endpoint and server audit records show which users initiated sessions and what shares or authentication attempts occurred.

Explanation

Correct Answer

D:

This check measures the particular condition that the response was intended to change, rather than unrelated activity or a generic dashboard count. Specifically: Endpoint and server audit records show which users initiated sessions and what shares or authentication attempts occurred. It tests whether: Identify the peer and initiating processes, confirm whether file-sharing activity is authorized, and assess lateral movement scope.

Incorrect Answers

A:

Port-445 traffic ceases after a blanket firewall rule but session ownership remains unknown. This test or metric does not demonstrate the complete target effect of Identify the peer and initiating processes, confirm whether file-sharing activity is authorized, and assess lateral movement scope. The decisive observable confirmation is: Endpoint and server audit records show which users initiated sessions and what shares or authentication attempts occurred.

B:

Port-level flow confirmation does not show which user or process initiated SMB connections and what was accessed. Endpoint and server audit records supply the necessary attribution and scope.

C:

A flow chart shows connecting laptops but no accessed shares or authentication attempts. This test or metric does not demonstrate the complete target effect of Identify the peer and initiating processes, confirm whether file-sharing activity is authorized, and assess lateral movement scope. The decisive observable confirmation is: Endpoint and server audit records show which users initiated sessions and what shares or authentication attempts occurred.

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