Question 10
A forensic inquiry ends with evidence gaps and corrective recommendations. Which final activity checks whether investigative questions were answered?
- Case closure review
- Incident containment
- Incident scoping
- Evidence preservation
- Attribution assessment
Explanation
Correct Answer
A:Closure review maps findings to the original scope, records limitations, verifies custody documentation, and captures lessons. Declaring victory before unresolved questions are disclosed weakens the record.
Incorrect Answers
B:The objective here is whether the investigation met its original objectives; containment limits ongoing exposure, for example with controlled network isolation, while coordinating evidence capture; the option would instead inform ongoing malicious communications. It is a response action and not a substitute for establishing historical facts; it is not direct evidence of whether the investigation met its original objectives.
C:For a separate investigation of the affected systems and investigative boundaries, scoping identifies affected assets, time interval, stakeholders, and authorized investigative questions before collection expands; that is not the determination of whether the investigation met its original objectives in the stem. It prevents unfocused acquisition and makes evidence needs defensible; the evidence still must speak to whether the investigation met its original objectives.
D:With whether the investigation met its original objectives as the investigative issue, preservation protects original evidence from avoidable change by using documented, suitable collection and controlled examination methods; the result would concern the original state of digital material. Direct exploratory activity can alter metadata or volatile state; this would not resolve whether the investigation met its original objectives.
E:For questions about the likely responsible actor, attribution evaluates multiple independent behavioral, infrastructure, and account clues; that differs from whether the investigation met its original objectives. A single sender address or IP is insufficient to identify a person with confidence; it provides no direct answer to whether the investigation met its original objectives.
Question 11
The finance department paid a fraudulent invoice after a vendor conversation was impersonated without a malicious attachment. Which crime pattern fits?
- Credential stuffing
- Cryptojacking
- Data tampering
- Business email compromise
Explanation
Correct Answer
D:Business email compromise relies on impersonation and social engineering to redirect payments or sensitive information. The investigator should examine conversation history and payment instructions.
Incorrect Answers
A:In work concerning reused credentials being tested broadly, credential stuffing tests credentials obtained elsewhere against another service, often at scale; the operation would not resolve a payment diversion through impersonated correspondence. It differs from guessing entirely new password combinations for one account; the distinction leaves a payment diversion through impersonated correspondence unsettled.
B:A case involving unauthorized cryptocurrency mining activity might use this approach: cryptojacking hijacks computing resources for cryptocurrency mining, frequently through unauthorized processes or browser scripts; the required result here is a payment diversion through impersonated correspondence. Network pool traffic and execution artifacts help corroborate it; it cannot replace proof about a payment diversion through impersonated correspondence.
C:The required finding is about a payment diversion through impersonated correspondence; data tampering undermines information integrity by changing records or calculations; this addresses the separate concern of unauthorized modification of business records. Audit trails and before/after values are more relevant than indicators of data exfiltration; it does not by itself answer a payment diversion through impersonated correspondence.
Question 12
A customer portal shows large numbers of login attempts with reused username/password pairs across accounts. Which attack class best describes the pattern?
- Business email compromise
- Data tampering
- Credential stuffing
- Ransomware extortion
Explanation
Correct Answer
C:Credential stuffing tests credentials obtained elsewhere against another service, often at scale. It differs from guessing entirely new password combinations for one account.
Incorrect Answers
A:In an inquiry concerning a payment diversion through impersonated correspondence, business email compromise relies on impersonation and social engineering to redirect payments or sensitive information; the scope does not extend to reused credentials being tested broadly. The investigator should examine conversation history and payment instructions; that issue cannot settle reused credentials being tested broadly.
B:Even though the scenario needs reused credentials being tested broadly, data tampering undermines information integrity by changing records or calculations; the action relates to unauthorized modification of business records. Audit trails and before/after values are more relevant than indicators of data exfiltration; this remains insufficient for reused credentials being tested broadly.
D:The objective here is reused credentials being tested broadly; double-extortion ransomware couples service disruption with threatened release of stolen information; the option would instead inform encryption combined with data-leak threats. Evidence collection should separately establish encryption, access and outbound transfer; it is not direct evidence of reused credentials being tested broadly.
Question 13
Authentication logs show a single common password tried against hundreds of employee accounts during a short interval. Which technique is most likely?
- Password spraying
- Credential stuffing
- Account takeover
- Ransomware extortion
Explanation
Correct Answer
A:Password spraying distributes a small password set across many identities, limiting repeated failures on one account. That distribution distinguishes it from a focused brute-force attack.
Incorrect Answers
B:Instead of a method addressing one candidate password across many identities, credential stuffing tests credentials obtained elsewhere against another service, often at scale; this one concerns reused credentials being tested broadly. It differs from guessing entirely new password combinations for one account; it cannot independently determine one candidate password across many identities.
C:In work concerning unauthorized control of a legitimate identity, account takeover occurs when an unauthorized actor gains operational control over someone else's account; the operation would not resolve one candidate password across many identities. Session, recovery-factor, and identity-provider evidence can distinguish it from a forged message; the distinction leaves one candidate password across many identities unsettled.
D:A case involving encryption combined with data-leak threats might use this approach: double-extortion ransomware couples service disruption with threatened release of stolen information; the required result here is one candidate password across many identities. Evidence collection should separately establish encryption, access and outbound transfer; it cannot replace proof about one candidate password across many identities.
Question 14
A privileged staff member legitimately entered the document system but exported records outside the approved role. Which threat category applies?
- Data tampering
- Insider misuse
- Account takeover
- Cryptojacking
Explanation
Correct Answer
B:Insider misuse involves authorized access that is used in an unauthorized way. The investigation must compare privileges and approved purpose with actual activity.
Incorrect Answers
A:When the investigative task is unauthorized modification of business records, data tampering undermines information integrity by changing records or calculations; that differs from the question about misuse of otherwise legitimate access. Audit trails and before/after values are more relevant than indicators of data exfiltration; that leaves misuse of otherwise legitimate access unresolved.
C:In an inquiry concerning unauthorized control of a legitimate identity, account takeover occurs when an unauthorized actor gains operational control over someone else's account; the scope does not extend to misuse of otherwise legitimate access. Session, recovery-factor, and identity-provider evidence can distinguish it from a forged message; that issue cannot settle misuse of otherwise legitimate access.
D:Even though the scenario needs misuse of otherwise legitimate access, cryptojacking hijacks computing resources for cryptocurrency mining, frequently through unauthorized processes or browser scripts; the action relates to unauthorized cryptocurrency mining activity. Network pool traffic and execution artifacts help corroborate it; this remains insufficient for misuse of otherwise legitimate access.
Question 15
An intrusion combines data exfiltration with encryption and a demand not to publish stolen files. Which crime pattern is shown?
- Business email compromise
- Ransomware extortion
- DDoS extortion
- Supply-chain compromise
Explanation
Correct Answer
B:Double-extortion ransomware couples service disruption with threatened release of stolen information. Evidence collection should separately establish encryption, access and outbound transfer.
Incorrect Answers
A:With encryption combined with data-leak threats as the investigative issue, business email compromise relies on impersonation and social engineering to redirect payments or sensitive information; the result would concern a payment diversion through impersonated correspondence. The investigator should examine conversation history and payment instructions; this would not resolve encryption combined with data-leak threats.
C:The stem asks about encryption combined with data-leak threats; distributed denial-of-service extortion attempts to overwhelm availability while using disruption as leverage; the described operation is used for a traffic flood used to demand payment. Origin and bot participation require traffic analysis, not merely payment evidence; a determination about encryption combined with data-leak threats requires other support.
D:Instead of a method addressing encryption combined with data-leak threats, a supply-chain attack abuses an upstream dependency, distribution process, or trusted provider to reach downstream victims; this one concerns multiple victims infected through one trusted update. Update provenance and signing-chain history become central evidence; it cannot independently determine encryption combined with data-leak threats.
Question 16
A storefront is flooded by distributed traffic after receiving a payment demand to stop the flood. Which crime type is evident?
- Password spraying
- Supply-chain compromise
- Business email compromise
- DDoS extortion
Explanation
Correct Answer
D:Distributed denial-of-service extortion attempts to overwhelm availability while using disruption as leverage. Origin and bot participation require traffic analysis, not merely payment evidence.
Incorrect Answers
A:Although the case asks about a traffic flood used to demand payment, password spraying distributes a small password set across many identities, limiting repeated failures on one account; the action instead concerns one candidate password across many identities. That distribution distinguishes it from a focused brute-force attack; it does not establish a traffic flood used to demand payment.
B:For an analysis centered on multiple victims infected through one trusted update, a supply-chain attack abuses an upstream dependency, distribution process, or trusted provider to reach downstream victims; the present need is a traffic flood used to demand payment. Update provenance and signing-chain history become central evidence; a different finding about a traffic flood used to demand payment is still needed.
C:When the investigative task is a payment diversion through impersonated correspondence, business email compromise relies on impersonation and social engineering to redirect payments or sensitive information; that differs from the question about a traffic flood used to demand payment. The investigator should examine conversation history and payment instructions; that leaves a traffic flood used to demand payment unresolved.
Question 17
Several customers are infected immediately after installing an apparently legitimate update from a trusted vendor. Which intrusion pattern fits?
- DDoS extortion
- Account takeover
- Ransomware extortion
- Supply-chain compromise
Explanation
Correct Answer
D:A supply-chain attack abuses an upstream dependency, distribution process, or trusted provider to reach downstream victims. Update provenance and signing-chain history become central evidence.
Incorrect Answers
A:The objective here is multiple victims infected through one trusted update; distributed denial-of-service extortion attempts to overwhelm availability while using disruption as leverage; the option would instead inform a traffic flood used to demand payment. Origin and bot participation require traffic analysis, not merely payment evidence; it is not direct evidence of multiple victims infected through one trusted update.
B:For a separate investigation of unauthorized control of a legitimate identity, account takeover occurs when an unauthorized actor gains operational control over someone else's account; that is not the determination of multiple victims infected through one trusted update in the stem. Session, recovery-factor, and identity-provider evidence can distinguish it from a forged message; the evidence still must speak to multiple victims infected through one trusted update.
C:With multiple victims infected through one trusted update as the investigative issue, double-extortion ransomware couples service disruption with threatened release of stolen information; the result would concern encryption combined with data-leak threats. Evidence collection should separately establish encryption, access and outbound transfer; this would not resolve multiple victims infected through one trusted update.
Question 18
A warehouse application's quantities were altered without authorization, but files were neither stolen nor encrypted. Which class of harm occurred?
- DDoS extortion
- Business email compromise
- Account takeover
- Data tampering
Explanation
Correct Answer
D:Data tampering undermines information integrity by changing records or calculations. Audit trails and before/after values are more relevant than indicators of data exfiltration.
Incorrect Answers
A:A case involving a traffic flood used to demand payment might use this approach: distributed denial-of-service extortion attempts to overwhelm availability while using disruption as leverage; the required result here is unauthorized modification of business records. Origin and bot participation require traffic analysis, not merely payment evidence; it cannot replace proof about unauthorized modification of business records.
B:The required finding is about unauthorized modification of business records; business email compromise relies on impersonation and social engineering to redirect payments or sensitive information; this addresses the separate concern of a payment diversion through impersonated correspondence. The investigator should examine conversation history and payment instructions; it does not by itself answer unauthorized modification of business records.
C:Although the case asks about unauthorized modification of business records, account takeover occurs when an unauthorized actor gains operational control over someone else's account; the action instead concerns unauthorized control of a legitimate identity. Session, recovery-factor, and identity-provider evidence can distinguish it from a forged message; it does not establish unauthorized modification of business records.
Question 19
Endpoints exhibit sustained processor use and unauthorized mining pool communications, without destructive encryption. Which abuse does this indicate?
- DDoS extortion
- Cryptojacking
- Credential stuffing
- Data tampering
Explanation
Correct Answer
B:Cryptojacking hijacks computing resources for cryptocurrency mining, frequently through unauthorized processes or browser scripts. Network pool traffic and execution artifacts help corroborate it.
Incorrect Answers
A:Even though the scenario needs unauthorized cryptocurrency mining activity, distributed denial-of-service extortion attempts to overwhelm availability while using disruption as leverage; the action relates to a traffic flood used to demand payment. Origin and bot participation require traffic analysis, not merely payment evidence; this remains insufficient for unauthorized cryptocurrency mining activity.
C:The objective here is unauthorized cryptocurrency mining activity; credential stuffing tests credentials obtained elsewhere against another service, often at scale; the option would instead inform reused credentials being tested broadly. It differs from guessing entirely new password combinations for one account; it is not direct evidence of unauthorized cryptocurrency mining activity.
D:For a separate investigation of unauthorized modification of business records, data tampering undermines information integrity by changing records or calculations; that is not the determination of unauthorized cryptocurrency mining activity in the stem. Audit trails and before/after values are more relevant than indicators of data exfiltration; the evidence still must speak to unauthorized cryptocurrency mining activity.
Question 20
A legitimate customer account changes recovery methods and sends unusual messages following a suspicious login. Which outcome is under investigation?
- Supply-chain compromise
- Data tampering
- Password spraying
- Account takeover
Explanation
Correct Answer
D:Account takeover occurs when an unauthorized actor gains operational control over someone else's account. Session, recovery-factor, and identity-provider evidence can distinguish it from a forged message.
Incorrect Answers
A:Instead of a method addressing unauthorized control of a legitimate identity, a supply-chain attack abuses an upstream dependency, distribution process, or trusted provider to reach downstream victims; this one concerns multiple victims infected through one trusted update. Update provenance and signing-chain history become central evidence; it cannot independently determine unauthorized control of a legitimate identity.
B:In work concerning unauthorized modification of business records, data tampering undermines information integrity by changing records or calculations; the operation would not resolve unauthorized control of a legitimate identity. Audit trails and before/after values are more relevant than indicators of data exfiltration; the distinction leaves unauthorized control of a legitimate identity unsettled.
C:A case involving one candidate password across many identities might use this approach: password spraying distributes a small password set across many identities, limiting repeated failures on one account; the required result here is unauthorized control of a legitimate identity. That distribution distinguishes it from a focused brute-force attack; it cannot replace proof about unauthorized control of a legitimate identity.