312-39別格な問題集をダウンロードして無料で最新の（312-39テスト問題集をゲット) [Q85-Q105]

312-39別格な問題集をダウンロードして無料で最新の（312-39テスト問題集をゲット2026年06月18日)

312-39問題集は合格保証します合格できる312-39試験問題2026年更新

312-39試験は、セキュリティオペレーションセンター分析に深い理解が必要な、困難で総合的な認定試験です。試験に備えるために、受験者はEC-COUNCILの公式トレーニングコースを受講するか、実践試験、学習ガイド、オンラインフォーラムなどの他の学習資料を使用することができます。CSA認定試験に合格するには、献身と努力が必要ですが、サイバーセキュリティ分野で新しいキャリア機会を開く報酬的な達成感があります。

EC-Council 312-39認定試験は、認定SOCアナリスト（CSA）試験としても知られており、セキュリティオペレーションセンター（SOC）管理、ネットワークセキュリティ、脅威インテリジェンス、インシデント対応における個人の知識とスキルをテストするように設計されています。この認定は、サイバーセキュリティでのキャリアを追求することに興味がある専門家や、現在のサイバーセキュリティの役割で上昇しようとしている専門家に最適です。

 

質問 # 85
A threat hunter analyzing an infected endpoint finds that malicious processes keep reappearing even after termination, making traditional remediation ineffective. The user reports slowdowns, abnormal pop-ups, and unauthorized application launches. Deeper inspection reveals multiple scheduled tasks executing unknown scripts at intervals, along with suspicious registry modifications enabling automatic execution on startup. The endpoint makes intermittent encrypted outbound connections to an unclassified external server. The organization also observed multiple failed privileged logins from the same subnet. Which signs should the threat hunter look for to confirm and mitigate the threat?

• A. Indicators of Attack (IoAs)
• B. Host-based artifacts
• C. Threat intelligence and adversary context
• D. Network-based artifacts

正解：B

解説：
Host-based artifacts are the most direct evidence to confirm persistence and recurring execution on an endpoint. The scenario already describes classic host persistence mechanisms: scheduled tasks and registry autorun modifications. To confirm and mitigate, a threat hunter should focus on endpoint-resident artifacts such as: persistence entries (scheduled tasks, Run/RunOnce keys, services, WMI subscriptions), process ancestry (which parent launches the malicious script), file system changes (dropped scripts, DLLs, staged payloads), and security control tampering. These artifacts enable containment and eradication because they point to what must be removed and what must be prevented from re-creating itself after reboot. Network- based artifacts are important for identifying C2 destinations and potential lateral movement, but they won't fully explain how the malware survives termination. Threat intelligence context can help attribute and match TTPs, but it's not required to confirm persistence locally. Indicators of Attack are behavior patterns (like scheduled task creation, registry autoruns, process injection) and are valuable conceptually, but the option that best represents the concrete evidence you need to examine and remediate on the endpoint is "host-based artifacts." In SOC response, you'd combine host artifact removal with credential resets and scoping for similar persistence across endpoints.

質問 # 86
Which of the following tool is used to recover from web application incident?

• A. Symantec Secure Web Gateway
• B. CrowdStrike FalconTM Orchestrator
• C. Smoothwall SWG
• D. Proxy Workbench

正解：B

解説：
CrowdStrike FalconTM Orchestrator is a tool designed to automate the response to security incidents, including those involving web applications. It integrates with the CrowdStrike Falcon platform to provide a range of capabilities such as real-time response, incident investigation, and remediation. This makes it suitable for recovering from web application incidents by allowing security teams to quickly identify, understand, and resolve threats.
References The EC-Council's Certified SOC Analyst (CSA) course materials and study guides discuss various tools and their applications in incident response. CrowdStrike FalconTM Orchestrator is recognized in the industry for its incident response capabilities, aligning with the learning resources provided by EC-Council for SOC Analysts.

質問 # 87
Jane, a security analyst, while analyzing IDS logs, detected an event matching Regex
/((\%3C)|<)((\%69)|i|(\% 49))((\%6D)|m|(\%4D))((\%67)|g|(\%47))[^\n]+((\%3E)|>)/|.
What does this event log indicate?

• A. Parameter Tampering Attack
• B. Directory Traversal Attack
• C. SQL Injection Attack
• D. XSS Attack

正解：D

質問 # 88
An organization is implementing and deploying the SIEM with following capabilities.

What kind of SIEM deployment architecture the organization is planning to implement?

• A. Self-hosted, Jointly Managed
• B. Cloud, MSSP Managed
• C. Self-hosted, Self-Managed
• D. Self-hosted, MSSP Managed

正解：B

質問 # 89
A SOC analyst receives an alert indicating that the system time on a critical Windows server was changed at 3:
00 AM. There are no scheduled maintenance tasks at this time. Unauthorized time changes can be used to evade security controls, such as altering timestamps to obscure malicious activity. The analyst must identify the relevant event codes that log system time modifications and related suspicious behavior. Which of the following Windows Security Event Codes should the analyst review to investigate potential tampering?

• A. 4616 and 4624
• B. 4616 and 4618
• C. 4608 and 4609
• D. 4625 and 4634

正解：B

解説：
Event ID 4616 is the key Windows Security log event for "system time was changed," and it is the primary artifact to confirm and investigate time-tampering. It typically includes details such as the previous time, the new time, and the account or process context responsible, which helps the SOC determine whether the change was authorized (maintenance) or suspicious (off-hours, unusual account, unexpected host). Event ID 4618 is useful as a companion signal because it indicates monitored security-relevant conditions and can help reveal related suspicious behavior around auditing or security event patterns that may coincide with timestamp manipulation. In practice, SOC analysts correlate the time-change event with surrounding authentication events, privilege use, and process creation telemetry to identify the actor and intent. The other options do not directly target the time-change activity: 4608/4609 relate to system startup/shutdown; 4625 is failed logon and
4634 is logoff; 4624 is successful logon (useful context, but not the event that records the time modification itself). Therefore, the best pairing for investigating time tampering in the options provided is 4616 and 4618.

質問 # 90
Where will you find the reputation IP database, if you want to monitor traffic from known bad IP reputation using OSSIM SIEM?

• A. /etc/ossim/reputation
• B. /etc/siem/ossim/server/reputation.data
• C. /etc/ossim/server/reputation.data
• D. /etc/ossim/siem/server/reputation/data

正解：C

解説：
In OSSIM SIEM, the reputation IP database is a crucial component for monitoring traffic from known malicious IP addresses. The correct location of this database is:
* /etc/ossim/server/reputation.data: This directory and file name specify the location where the reputation database is stored. It contains the list of known bad IP addresses that the OSSIM system uses to monitor and identify potentially harmful traffic.
* Purpose of the Reputation Database: The database is used to compare incoming traffic against the list of known bad IPs. If a match is found, OSSIM can generate alerts or take predefined actions to mitigate the threat.
* Updating the Database: It's important to regularly update the reputation database to ensure it includes the latest threat intelligence. This helps maintain the effectiveness of the SIEM system in identifying and responding to threats.
References: The information provided here is based on standard OSSIM documentation and best practices for SIEM systems as outlined in EC-Council's SOC Analyst study materials1234.
Please note that while I strive to provide accurate information, it's always best to consult the latest EC-Council SOC Analyst documents and learning resources for the most current and detailed guidance.
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質問 # 91
A financial institution's SIEM is generating a high number of false positives, causing alert fatigue among SOC analysts. To reduce this burden and improve threat detection accuracy, the organization integrates AI capabilities into the SIEM. After implementation, the SOC team observes a significant decrease in redundant alerts, along with faster detection of genuine threats. Which AI capability contributed to this improvement?

• A. Automated rule generation
• B. Data integration enhancement
• C. Rule validation and testing
• D. Dynamic rule optimization

正解：D

解説：
Dynamic rule optimization best explains a reduction in false positives and redundant alerts after adding AI to a SIEM. In SOC operations, alert fatigue often comes from static thresholds, overly broad correlations, and detections that don't adapt to changing baselines (new business apps, seasonal activity, infrastructure changes). AI-driven dynamic optimization can tune thresholds, suppress noisy patterns, and adjust scoring based on context (user role, device posture, known maintenance windows, historical behavior). This reduces duplicate/low-value alerts while preserving or improving sensitivity for real threats, which aligns with
"decrease in redundant alerts" and "faster detection of genuine threats." Rule validation/testing improves quality but is usually a manual or pre-deployment activity, not a continuous adaptive capability. Automated rule generation might create new detections, but it doesn't inherently reduce noise unless paired with tuning.
Data integration enhancement improves coverage and correlation, but by itself it can increase alerts if not tuned. The described outcome-less noise, better precision, quicker true detection-matches adaptive tuning and optimization of detections over time, which is dynamic rule optimization.

質問 # 92
Which of the following service provides phishing protection and content filtering to manage the Internet experience on and off your network with the acceptable use or compliance policies?

• A. OpenDNS
• B. Malstrom
• C. Apility.io
• D. I-Blocklist

正解：A

解説：
OpenDNS provides extensive phishing protection and content filtering services. It operates by enforcing internet use policies on and off the network, ensuring that users adhere to acceptable use and compliance policies. Here's how OpenDNS achieves this:
* Phishing Protection: OpenDNS uses predictive security to anticipate and prevent threats before they can reach the network. It does this by using DNS to enforce security, which is often quicker and more effective than traditional methods.
* Content Filtering: OpenDNS allows the network administrator to block unwanted content categories, thus enforcing compliance with organizational policies. This is done through DNS queries, which are checked against OpenDNS's database to ensure they comply with the set policies.
* Off-Network Protection: OpenDNS's roaming client allows the same level of protection and filtering even when devices are not connected to the company network, ensuring consistent enforcement of policies.
References:
* EC-Council's Certified SOC Analyst (C|SA) program provides training and certification for SOC analysts, covering the fundamentals of SOC operations, including phishing protection and content filtering 1.
* Additional resources and study guides from the EC-Council elaborate on the role of SOC analysts and the tools they use, including services like OpenDNS for maintaining network security and integrity 23.

質問 # 93
Mike is an incident handler for PNP Infosystems Inc. One day, there was a ticket raised regarding a critical incident and Mike was assigned to handle the incident. During the process of incident handling, at one stage, he has performed incident analysis and validation to check whether the incident is a true incident or a false positive.
Identify the stage in which he is currently in.

• A. Incident Triage
• B. Post-Incident Activities
• C. Incident Recording and Assignment
• D. Incident Disclosure

正解：A

解説：
The stage of incident handling that involves incident analysis and validation to determine if the incident is a true incident or a false positive is known as Incident Triage. This stage is critical as it helps in prioritizing incidents based on their severity, impact, and urgency. The process of triage typically includes an initial assessment to confirm the validity of an incident, categorize its type, and determine the appropriate response.
References: The EC-Council's SOC Analyst course outlines the incident handling and response process, which includes the triage stage as a key component12. This is further supported by the NIST framework, which details the stages of incident response, including detection and analysis, where triage is a fundamental activity1. The Certified SOC Analyst (CSA) training also emphasizes the importance of incident triage in the overall security operations center (SOC) workflow3.

質問 # 94
Which one of the following is the correct flow for Setting Up a Computer Forensics Lab?

• A. Planning and budgeting -> Forensics lab licensing -> Physical location and structural design considerations -> Work area considerations -> Physical security recommendations -> Human resource considerations
• B. Planning and budgeting -> Physical location and structural design considerations -> Work area considerations -> Human resource considerations -> Physical security recommendations -> Forensics lab licensing
• C. Planning and budgeting -> Physical location and structural design considerations -> Forensics lab licensing ->Work area considerations -> Human resource considerations -> Physical security recommendations
• D. Planning and budgeting -> Physical location and structural design considerations-> Forensics lab licensing -> Human resource considerations -> Work area considerations -> Physical security recommendations

正解：B

解説：
The process of setting up a Computer Forensics Lab involves several key steps that must be followed in a logical sequence to ensure the lab is functional, secure, and compliant with legal standards. Here's a breakdown of each step:
* Planning and Budgeting: This initial phase involves defining the scope of the lab, the services it will provide, and the resources required. A detailed budget must be prepared, accounting for all potential costs including equipment, software, personnel, training, and maintenance.
* Physical Location and Structural Design Considerations: Selecting a suitable location is critical. The space must accommodate the necessary equipment and personnel, and also allow for secure evidence storage. The design should facilitate workflow efficiency and include considerations for electrical needs, ventilation, and network infrastructure.
* Work Area Considerations: The layout of the work area should promote a secure and efficient environment for forensic analysis. This includes setting up workstations, secure evidence storage, and areas for examination and documentation.
* Human Resource Considerations: Qualified personnel are essential for the operation of a forensics lab.
This involves hiring experienced forensic analysts, providing ongoing training, and ensuring that staff understand the legal implications of their work.
* Physical Security Recommendations: Security measures must be implemented to protect sensitive data and preserve the integrity of evidence. This includes controlled access to the lab, surveillance systems, and secure storage for evidence.
* Forensics Lab Licensing: Depending on the jurisdiction, a forensics lab may require licensing to operate legally. This step ensures that the lab meets all regulatory requirements and standards for forensic analysis.
References: The verified answer is based on the standard practices and guidelines for setting up a Computer Forensics Lab as outlined in EC-Council's SOC Analyst resources and study guides12.
Please note that while I strive to provide accurate information, it's always best to consult the latest EC-Council SOC Analyst documents and learning resources for the most current and detailed guidance.

質問 # 95
The SOC team at CyberSecure Corp is conducting a security review to identify anomalous log entries from firewall logs. The team needs to extract patterns such as email addresses, IP addresses, and URLs to detect unauthorized access attempts, phishing activities, and suspicious external communications. The SOC analyst applies various regular expressions (regex) patterns to filter and analyze logs efficiently. For example, they use \b\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}\b to match IPv4 addresses. Which regex pattern should the SOC analyst use to extract all hexadecimal color codes found in the logs?

• A. \b\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}\b
• B. ([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})
• C. (0[1-9]|1[0-2])/(0[1-9]|(1[0-2])/[0-9]|3[01])\d{4}
• D. [a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+.[a-zA-Z]{2,}

正解：B

解説：
Hex color codes in common usage are represented as either 3 hex characters (shorthand) or 6 hex characters (full), typically composed of digits 0-9 and letters A-F (case-insensitive). Option B, ([A-Fa-f0-9]{6}|[A-Fa- f0-9]{3}), directly matches either a 6-character hex sequence or a 3-character hex sequence and is the only option that targets hexadecimal character sets and lengths relevant to color codes. In SOC log parsing, regex is frequently used to extract structured tokens from semi-structured text logs so that fields can be normalized and queried. Option C is an email pattern, and option D is an IPv4 pattern. Option A appears to be a date-like pattern and is unrelated to hex. While many hex color codes are prefixed with "#", this question's option set focuses on the hex portion itself. In practice, analysts often refine such patterns to include boundaries or the
"#" prefix depending on log content, but among the provided choices, B is the correct regex for extracting hexadecimal color codes.

質問 # 96
Emmanuel is working as a SOC analyst in a company named Tobey Tech. The manager of Tobey Tech recently recruited an Incident Response Team (IRT) for his company. In the process of collaboration with the IRT, Emmanuel just escalated an incident to the IRT.
What is the first step that the IRT will do to the incident escalated by Emmanuel?

• A. Incident Analysis and Validation
• B. Incident Classification
• C. Incident Recording
• D. Incident Prioritization

正解：A

解説：
When an incident is escalated to the Incident Response Team (IRT), the first step they undertake is Incident Analysis and Validation. This step is crucial to ensure that the incident is genuine and to understand its nature and scope. The IRT will analyze the information provided by the SOC analyst, validate the incident against known patterns or indicators of compromise, and gather additional information if necessary. This initial analysis helps in determining the severity of the incident and guides the subsequent steps in the incident response process.
References:
* The Key Role of Incident Response Teams (IRTs) - Zenduty1
* A Practical Approach to Incident Management Escalation - Exigence2
* ITIL Incident Management: Best Practices for Escalation and Resolution - LinkedIn3

質問 # 97
The SOC team at a national cybersecurity agency detects anomalous network traffic from a sensitive government server and escalates to forensics. The forensic team discovers a trojan suspected of data exfiltration and persistence. The lead malware analyst must determine capabilities and persistence mechanisms by analyzing the trojan's binary code at the instruction level without executing it. Which technique should the analyst use?

• A. Interactive debugging
• B. Network behavior monitoring
• C. Malware disassembly
• D. Dynamic code injection

正解：C

解説：
Malware disassembly is the technique used to analyze a binary at the instruction level without executing it. It converts compiled machine code into assembly instructions so an analyst can study program logic, identify functions, locate strings and API calls, and understand how the malware performs actions such as persistence, command execution, credential theft, and exfiltration. This meets the requirement to avoid execution on a sensitive system, which is critical in high-risk environments where unintended detonation could cause further damage. Network behavior monitoring requires execution to observe outbound connections and protocols, which violates the "without executing" constraint. Dynamic code injection is an active technique used during runtime and is not appropriate when execution must be avoided. Interactive debugging often involves running the program under a debugger to observe behavior step-by-step; while it can be done in controlled labs, it still requires execution. For strict non-execution, disassembly is the correct static technique. SOC teams use disassembly results to produce detections (behavioral signatures, YARA-like patterns, API sequence indicators) and to identify IOCs such as domains, mutexes, registry keys, and file paths for enterprise-wide hunting.

質問 # 98
A large financial institution has identified a sophisticated phishing campaign targeting employees, resulting in unauthorized access to sensitive customer data. The organization already uses a SIEM for log aggregation and alerting, alongside an EDR solution for endpoint visibility. Additionally, they have access to XDR for broader threat detection and XSOAR for security orchestration and automation. As a SOC analyst, you've been asked to recommend an integration strategy to improve real-time threat correlation, streamline incident response workflows, and maximize the use of existing tools. Which integration would meet these goals?

• A. Integrate EDR with XSOAR
• B. Integrate XDR with SIEM
• C. Integrate EDR with SIEM
• D. Integrate XDR with XSOAR

正解：D

解説：
Integrating XDR with XSOAR best meets the combined goals of real-time correlation and streamlined response workflows. XDR's strength is cross-domain detection and correlation (identity, endpoint, email, cloud, network) to produce higher-fidelity incidents from noisy signals-critical in phishing-driven compromises. XSOAR's strength is orchestrating response: enrichment, case management, approvals, containment actions (disable account, revoke sessions, isolate device), and notifications, all executed consistently through playbooks. When integrated, detections produced by XDR can automatically trigger XSOAR playbooks that standardize triage and containment, reducing response time and analyst workload while improving consistency and auditability. Integrating XDR with SIEM improves centralized visibility and correlation inside the SIEM, but it does not directly address end-to-end automated workflows. EDR integrations (with SIEM or XSOAR) are narrower in scope-useful for endpoint actions but less effective for phishing campaigns that span identity, email, and cloud resources. Since the question explicitly requires both improved correlation and streamlined response automation, XDR-to-XSOAR is the most complete option among those provided.

質問 # 99
Harley is working as a SOC analyst with Powell Tech. Powell Inc. is using Internet Information Service (IIS) version 7.0 to host their website.
Where will Harley find the web server logs, if he wants to investigate them for any anomalies?

• A. SystemDrive%\ inetpub\LogFiles\logs\W3SVCN
• B. SystemDrive%\inetpub\logs\LogFiles\W3SVCN
• C. SystemDrive%\LogFiles\inetpub\logs\W3SVCN
• D. %SystemDrive%\LogFiles\logs\W3SVCN

正解：C

質問 # 100
Shawn is a security manager working at Lee Inc Solution. His organization wants to develop threat intelligent strategy plan. As a part of threat intelligent strategy plan, he suggested various components, such as threat intelligence requirement analysis, intelligence and collection planning, asset identification, threat reports, and intelligence buy-in.
Which one of the following components he should include in the above threat intelligent strategy plan to make it effective?

• A. Threat pivoting
• B. Threat buy-in
• C. Threat trending
• D. Threat boosting

正解：C

解説：
In the context of a threat intelligence strategy plan, 'threat trending' is a critical component that should be included to make the plan effective. Threat trending involves analyzing data over time to identify patterns and trends in cyber threats. This allows an organization to anticipate potential future attacks and prepare accordingly. It is an essential part of a proactive threat intelligence program, enabling the organization to stay ahead of threats rather than just reacting to them.
The other options, while they may be relevant in certain contexts, are not as central to the development of a threat intelligence strategy plan as 'threat trending' is. 'Threat pivoting' refers to the process of using one piece of data to uncover more data (e.g., using an IP address to find related domains). 'Threat buy-in' is not a standard term in threat intelligence, but it could refer to gaining organizational support for threat intelligence efforts. 'Threat boosting' is not a recognized term in the field of cybersecurity.
References: The answer is derived from the components of a threat intelligence strategy as outlined in the EC-Council's Certified SOC Analyst (CSA) training and certification program, which emphasizes the importance of understanding and implementing a threat intelligence-driven SOC12. The CSA program also covers the use of threat intelligence for enhanced incident detection1. The EC-Council materials highlight the need for SOC analysts to understand various types of cyber threats and the importance of threat intelligence in detecting and responding to these threats2.

質問 # 101
A SIEM alert is triggered due to unusual network traffic involving NetBIOS. The system log shows: "The TCP/IP NetBIOS Helper service entered the running state." Concurrently, Windows Security Event ID 4624 ("An account was successfully logged on") appears for multiple machines within a short time frame. The logon type is 3 (Network logon). Which of the following security incidents is the SIEM detecting?

• A. An attacker performing lateral movement within the network
• B. A malware infection spreading via SMB protocol
• C. A network administrator conducting routine maintenance
• D. A user connecting to shared files from multiple workstations

正解：A

解説：
The pattern described most strongly indicates lateral movement: multiple network logons (Event ID 4624, Logon Type 3) across multiple machines in a short period, combined with NetBIOS/SMB-related service activity, suggests a host-to-host authentication pattern consistent with an attacker moving through the environment. In SOC terms, Logon Type 3 reflects network-based authentication (commonly SMB, remote service access, admin shares, or remote management). When the same source account or host triggers many network logons quickly across endpoints-especially outside normal administrative patterns-it often indicates credential abuse (pass-the-hash, stolen credentials, or remote execution frameworks). While SMB- worm propagation is possible, the scenario emphasizes authentication events across multiple machines rather than explicit malware indicators or file-write propagation patterns. Routine maintenance is plausible only with strong supporting context (approved admin accounts, change windows, known tooling), which is not provided. A single user connecting to shared files typically wouldn't generate a burst of network logons "for multiple machines" in the same way, nor would it usually coincide with suspicious NetBIOS helper state changes as an anomaly. Therefore, the best classification is attacker lateral movement within the network.

質問 # 102
A type of threat intelligent that find out the information about the attacker by misleading them is known as
.

• A. Operational Intelligence
• B. Detection Threat Intelligence
• C. Threat trending Intelligence
• D. Counter Intelligence

正解：D

解説：
Counter Intelligence in the context of threat intelligence refers to efforts to deceive, manipulate, or mislead potential attackers to uncover their intentions, capabilities, or identities. This type of intelligence is proactive and often involves setting up honeypots or other traps to engage the attacker without them realizing they are being monitored and analyzed. The goal is to gather information about the attacker that can be used to strengthen defenses and prevent future attacks.
References: The EC-Council's Certified Threat Intelligence Analyst (CTIA) program discusses various types of threat intelligence, including counter intelligence, which is designed to mislead attackers and gather information about them1. This concept is also covered in the Certified SOC Analyst (CSA) training, where analysts learn to use predictive capabilities using threat intelligence to detect and counteract sophisticated threats2. Additional resources and study guides from the EC-Council and other cybersecurity training programs will provide more in-depth information on this topic34.

質問 # 103
You are working at Tech Solutions, a global technology firm. Your team detects an adversary attempting to bypass authentication controls and escalate privileges within the enterprise network. To counter the threat, you implement credential encryption, behavioral analytics, and process isolation. Your approach follows a structured framework that systematically maps defensive techniques to known adversarial tactics, allowing you to anticipate and mitigate evolving cyber threats. Which framework did you choose to apply in this scenario?

• A. MITRE D3FEND Framework
• B. Systems Security Engineering CMM
• C. NIST Cybersecurity Framework 2.0
• D. Cybersecurity Capability Maturity Model

正解：A

解説：
MITRE D3FEND is specifically designed to map defensive techniques to offensive adversary behaviors and tactics. In SOC and detection engineering, it provides a structured defensive ontology: you can identify an adversary technique (credential access, privilege escalation, defense evasion) and then select defensive countermeasures such as credential hardening, process isolation, monitoring/behavior analytics, and access control enforcement. The scenario describes a framework that "systematically maps defensive techniques to known adversarial tactics," which aligns directly with D3FEND's purpose. The other options are broader governance or maturity models rather than a defensive technique-mapping framework. Systems Security Engineering CMM and Cybersecurity Capability Maturity Models focus on process maturity and organizational capability development, not on mapping defensive controls to adversary behavior at a technique level. NIST CSF 2.0 is a high-level cybersecurity risk management framework organized around functions (govern, identify, protect, detect, respond, recover); it guides program structure but does not provide the same granular defensive technique taxonomy. Therefore, MITRE D3FEND is the correct choice for a structured, technique-to-defense mapping approach.

質問 # 104
Sarah Chen works as a security analyst at Midwest Financial. At 2:00 AM, the SOC detects unusual data exfiltration patterns and evidence of lateral movement across multiple servers containing sensitive customer data. The activity appears sophisticated and may require forensic analysis and system restoration. Which team should take primary responsibility for managing this complex security incident?

• A. Threat intelligence team
• B. SOC team
• C. Security engineering team
• D. Incident response team (IRT)

正解：D

解説：
The Incident Response Team (IRT) should take primary responsibility because the scenario describes an active, complex incident involving lateral movement and likely data exfiltration across sensitive systems, requiring coordinated containment, investigation, and recovery. The SOC often detects and initially triages incidents, but when severity and complexity increase-especially with potential data breach implications- IRT leadership is critical to coordinate cross-functional actions: containment steps, evidence preservation, forensics, remediation, system restoration, stakeholder communications, and regulatory considerations. Threat intelligence supports context (adversary patterns, IoCs/TTPs) but does not run response operations. Security engineering provides remediation support (hardening, patching, segmentation) but typically does not manage incident command and coordination. The SOC continues to support with monitoring, telemetry analysis, and detection tuning, but the IRT is the operational owner for managing the incident lifecycle end-to-end. In mature incident response, the IRT also ensures proper documentation, decision logging, and alignment with legal/compliance requirements-especially important when sensitive customer data and potential breach notification obligations are involved.

質問 # 105
......

EC-Council 312-39（Certified SOC Analyst（CSA））認定試験は、SOC分析のスキルと知識を実証することでキャリアを促進したいITおよびサイバーセキュリティの専門家にとって優れた選択です。この認定は、SOCアナリスト、インシデント対応者、セキュリティ専門家、ネットワーク管理者に適しています。認定を達成することは、専門家が自分のキャリアを際立たせ、収益の可能性を高めるのに役立ちます。

 

検証済みの312-39問題集で問題と解答で合格保証試験問題集テストエンジン：https://www.passtest.jp/EC-COUNCIL/312-39-shiken.html

検証済みの312-39問題集202格別な問題：https://drive.google.com/open?id=1NIEJmv5URbnK0b4llKffQIEmhXrYwSl2