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support@passexamhub.com Register Sign in All Categories * All Categories 0 Cart $0.00 Top Vendors * Amazon * Cisco * Microsoft * Oracle * RedHat * PRINCE2 * Citrix * WatchGuard * Home * All Products * About * Guarantee * Contact menu * Home * All Products * Guarantee * Contact support@passexamhub.com 1. Home 2. All Products 3. CompTIA 4. CompTIA CySA+ Certification 5. CS0-003 COMPTIA CS0-003 EXAM DUMPS COMPTIA CYBERSECURITY ANALYST CYSA+ CERTIFICATION EXAM Total Questions : 167 Update Date : May 01, 2024 PDF + Test Engine $65 $95 Add to Cart Test Engine $55 $85 Add to Cart PDF Only $45 $75 Add to Cart Demo Questions -------------------------------------------------------------------------------- LAST WEEK CS0-003 EXAM RESULTS 56 Customers Passed CompTIA CS0-003 Exam 98% Average Score In Real CS0-003 Exam 99% Questions came from our CS0-003 dumps. CHOOSING THE RIGHT PATH FOR YOUR CS0-003 EXAM PREPARATION Welcome to PassExamHub's comprehensive study guide for the CompTIA CyberSecurity Analyst CySA+ Certification Exam exam. Our CS0-003 dumps is designed to equip you with the knowledge and resources you need to confidently prepare for and succeed in the CS0-003 certification exam. WHAT OUR COMPTIA CS0-003 STUDY MATERIAL OFFERS PassExamHub's CS0-003 dumps PDF is carefully crafted to provide you with a comprehensive and effective learning experience. Our study material includes: In-depth Content: Our study guide covers all the key concepts, topics, and skills you need to master for the CS0-003 exam. Each topic is explained in a clear and concise manner, making it easy to understand even the most complex concepts. Online Test Engine: Test your knowledge and build your confidence with a wide range of practice questions that simulate the actual exam format. Our test engine cover every exam objective and provide detailed explanations for both correct and incorrect answers. Exam Strategies: Get valuable insights into exam-taking strategies, time management, and how to approach different types of questions. Real-world Scenarios: Gain practical insights into applying your knowledge in real-world scenarios, ensuring you're well-prepared to tackle challenges in your professional career. WHY CHOOSE PASSEXAMHUB? Expertise: Our CS0-003 exam questions answers are developed by experienced CompTIA certified professionals who have a deep understanding of the exam objectives and industry best practices. Comprehensive Coverage: We leave no stone unturned in covering every topic and skill that could appear on the CS0-003 exam, ensuring you're fully prepared. Engaging Learning: Our content is presented in a user-friendly and engaging format, making your study sessions enjoyable and effective. Proven Success: Countless students have used our study materials to achieve their CS0-003 certifications and advance their careers. Start Your Journey Today! Embark on your journey to CompTIA CyberSecurity Analyst CySA+ Certification Exam success with PassExamHub. Our study material is your trusted companion in preparing for the CS0-003 exam and unlocking exciting career opportunities. RELATED EXAMS CS0-001 View CS0-002 View COMPTIA CS0-003 SAMPLE QUESTION ANSWERS Question # 1 An employee accessed a website that caused a device to become infected with invasivemalware. The incident response analyst has:• created the initial evidence log.• disabled the wireless adapter on the device.• interviewed the employee, who was unable to identify the website that was accessed• reviewed the web proxy traffic logs.Which of the following should the analyst do to remediate the infected device? A. Update the system firmware and reimage the hardware. B. Install an additional malware scanner that will send email alerts to the analyst. C. Configure the system to use a proxy server for Internet access. D. Delete the user profile and restore data from backup. Answer: A Explanation: Updating the system firmware and reimaging the hardware is the best action to perform to remediate the infected device, as it helps to ensure that the device is restored to a clean and secure state and that any traces of malware are removed. Firmware is a type of software that controls the low-level functions of a hardware device, such as a motherboard, hard drive, or network card. Firmware can be updated or flashed to fix bugs, improve performance, or enhance security. Reimaging is a process of erasing and restoring the data on a storage device, such as a hard drive or a solid state drive, using an image file that contains a copy of the operating system, applications, settings, and files. Reimaging can help to recover from system failures, data corruption, or malware infections. Updating the system firmware and reimaging the hardware can help to remediate the infected device by removing any malicious code or configuration changes that may have been made by the malware, as well as restoring any missing or damaged files or settings that may have been affected by the malware. This can help to prevent further damage, data loss, or compromise of the device or the network. The other actions are not as effective or appropriate as updating the system firmware and reimaging the hardware, as they do not address the root cause of the infection or ensure that the device is fully cleaned and secured. Installing an additional malware scanner that will send email alerts to the analyst may help to detect and remove some types of malware, but it may not be able to catch all malware variants or remove them completely. It may also create conflicts or performance issues with other security tools or systems on the device. Configuring the system to use a proxy server for Internet access may help to filter or monitor some types of malicious traffic or requests, but it may not prevent or remove malware that has already infected the device or that uses other methods of communication or propagation. Deleting the user profile and restoring data from backup may help to recover some data or settings that may have been affected by the malware, but it may not remove malware that has infected other parts of the system or that has persisted on the device. Show Answer Question # 2 A SOC analyst identifies the following content while examining the output of a debuggercommand over a client-server application:getconnection (database01, "alpha " , "AXTV. 127GdCx94GTd") ;Which of the following is the most likely vulnerability in this system? A. Lack of input validation B. SQL injection C. Hard-coded credential D. Buffer overflow attacks Answer: C Explanation: The most likely vulnerability in this system is hard-coded credential. Hard-coded credential is a practice of embedding or storing a username, password, or other sensitive information in the source code or configuration file of a system or application. Hard-coded credential can pose a serious security risk, as it can expose the system or application to unauthorized access, data theft, or compromise if the credential is discovered or leaked by an attacker. Hard-coded credential can also make it difficult to change or update the credential if needed, as it may require modifying the code or file and redeploying the system or application. Show Answer Question # 3 A security analyst must preserve a system hard drive that was involved in a litigationrequest Which of the following is the best method to ensure the data on the device is notmodified? A. Generate a hash value and make a backup image. B. Encrypt the device to ensure confidentiality of the data. C. Protect the device with a complex password. D. Perform a memory scan dump to collect residual data. Answer: A Explanation: Generating a hash value and making a backup image is the best method to ensure the data on the device is not modified, as it creates a verifiable copy of the original data that can be used for forensic analysis. Encrypting the device, protecting it with a password, or performing a memory scan dump do not prevent the data from being altered or deleted. Verified References: CompTIA CySA+ CS0-002 Certification Study Guide, page 3291 Show Answer Question # 4 During an incident, some loCs of possible ransomware contamination were found in agroup of servers in a segment of the network. Which of the following steps should be takennext? A. Isolation B. Remediation C. Reimaging D. Preservation Answer: A Explanation: Isolation is the first step to take after detecting some indicators of compromise (IoCs) of possible ransomware contamination. Isolation prevents the ransomware from spreading to other servers or segments of the network, and allows the security team to investigate and contain the incident. Isolation can be done by disconnecting the infected servers from the network, blocking the malicious traffic, or applying firewall rules12. References: 10 Things You Should Do After a Ransomware Attack, How to Recover from a Ransomware Attack: A Step-by-Step Guide Show Answer Question # 5 Which of the following would eliminate the need for different passwords for a variety orinternal application? A. CASB B. SSO C. PAM D. MFA Answer: B Explanation: Single Sign-On (SSO) allows users to log in with a single ID and password to access multiple applications. It eliminates the need for different passwords for various internal applications, streamlining the authentication process. Show Answer Question # 6 An analyst wants to ensure that users only leverage web-based software that has beenpre-approved by the organization. Which of the following should be deployed? A. Blocklisting B. Allowlisting C. Graylisting D. Webhooks Answer: B Explanation: The correct answer is B. Allowlisting. Allowlisting is a technique that allows only pre-approved web-based software to run on a system or network, while blocking all other software. Allowlisting can help prevent unauthorized or malicious software from compromising the security of an organization. Allowlisting can be implemented using various methods, such as application control, browser extensions, firewall rules, or proxy servers12. The other options are not the best techniques to ensure that users only leverage webbased software that has been pre-approved by the organization. Blocklisting (A) is a technique that blocks specific web-based software from running on a system or network, while allowing all other software. Blocklisting can be ineffective or inefficient, as it requires constant updates and may not catch all malicious software. Graylisting © is a technique that temporarily rejects or delays incoming messages from unknown or suspicious sources, until they are verified as legitimate. Graylisting is mainly used for email filtering, not for web-based software control. Webhooks (D) are a technique that allows web-based software to send or receive data from other web-based software in real time, based on certain events or triggers. Webhooks are not related to web-based software control, but rather to web-based software integration. Show Answer Question # 7 An email hosting provider added a new data center with new public IP addresses. Which ofthe following most likely needs to be updated to ensure emails from the new data center donot get blocked by spam filters? A. DKIM B. SPF C. SMTP D. DMARC Answer: B Explanation: SPF (Sender Policy Framework) is a DNS TXT record that lists authorized sending IP addresses for a given domain. If an email hosting provider added a new data center with new public IP addresses, the SPF record needs to be updated to include those new IP addresses, otherwise the emails from the new data center may fail SPF checks and get blocked by spam filters123 References: 1: Use DMARC to validate email, setup steps 2: How to set up SPF, DKIM and DMARC: other mail & hosting providers providers 3: Set up SPF, DKIM, or DMARC records for my hosting email Show Answer Question # 8 A SOC analyst is analyzing traffic on a network and notices an unauthorized scan. Whichof the following types of activities is being observed? A. Potential precursor to an attack B. Unauthorized peer-to-peer communication C. Rogue device on the network D. System updates Answer: A Show Answer Question # 9 An organization has activated the CSIRT. A security analyst believes a single virtual serverwas compromised and immediately isolated from the network. Which of the followingshould the CSIRT conduct next? A. Take a snapshot of the compromised server and verify its integrity B. Restore the affected server to remove any malware C. Contact the appropriate government agency to investigate D. Research the malware strain to perform attribution Answer: A Explanation: The next action that the CSIRT should conduct after isolating the compromised server from the network is to take a snapshot of the compromised server and verify its integrity. Taking a snapshot of the compromised server involves creating an exact copy or image of the server’s data and state at a specific point in time. Verifying its integrity involves ensuring that the snapshot has not been altered, corrupted, or tampered with during or after its creation. Taking a snapshot and verifying its integrity can help preserve and protect any evidence or information related to the incident, as well as prevent any tampering, contamination, or destruction of evidence. Show Answer Question # 10 A security analyst has prepared a vulnerability scan that contains all of the company'sfunctional subnets. During the initial scan, users reported that network printers began toprint pages that contained unreadable text and icons.Which of the following should the analyst do to ensure this behavior does not oocur duringsubsequent vulnerability scans? A. Perform non-credentialed scans. B. Ignore embedded web server ports. C. Create a tailored scan for the printer subnet. D. Increase the threshold length of the scan timeout. Answer: C Explanation: The best way to prevent network printers from printing pages during a vulnerability scan is to create a tailored scan for the printer subnet that excludes the ports and services that trigger the printing behavior. The other options are not effective for this purpose: performing non-credentialed scans may not reduce the impact on the printers; ignoring embedded web server ports may not cover all the possible ports that cause printing; increasing the threshold length of the scan timeout may not prevent the printing from occurring. References: According to the CompTIA CySA+ Study Guide: Exam CS0-003, 3rd Edition1, one of the objectives for the exam is to “use appropriate tools and methods to manage, prioritize and respond to attacks and vulnerabilities”. The book also covers the usage and syntax of vulnerability scanning tools, such as Nessus, Nmap, and Qualys, in chapter 4. Specifically, it explains the meaning and function of each component in vulnerability scanning, such as credentialed vs. non-credentialed scans, port scanning, and scan scheduling1, pages 149-160. It also discusses the common issues and challenges of vulnerability scanning, such as network disruptions, false positives, and scan scope1, pages 161-162. Therefore, this is a reliable source to verify the answer to the question. Show Answer Question # 11 Which of the following makes STIX and OpenloC information readable by both humans andmachines? A. XML B. URL C. OVAL D. TAXII Answer: A Explanation: The correct answer is A. XML. STIX and OpenloC are two standards for representing and exchanging cyber threat intelligence (CTI) information. STIX stands for Structured Threat Information Expression and OpenloC stands for Open Location and Identity Coordinates. Both standards use XML as the underlying data format to encode the information in a structured and machinereadable way. XML stands for Extensible Markup Language and it is a widely used standard for defining and exchanging data on the web. XML uses tags, attributes, and elements to describe the structure and meaning of the data. XML is also human-readable, as it uses plain text and follows a hierarchical and nested structure. XML is not the only format that can be used to make STIX and OpenloC information readable by both humans and machines, but it is the most common and widely supported one. Other formats that can be used include JSON, CSV, or PDF, depending on the use case and the preferences of the information producers and consumers. However, XML has some advantages over other formats, such as: XML is more expressive and flexible than JSON or CSV, as it can define complex data types, schemas, namespaces, and validation rules. XML is more standardized and interoperable than PDF, as it can be easily parsed, transformed, validated, and queried by various tools and languages. XML is more compatible with existing CTI standards and tools than other formats, as it is the basis for STIX 1.x, TAXII 1.x, MAEC, CybOX, OVAL, and others. References: 1 Introduction to STIX - GitHub Pages 2 5 Best Threat Intelligence Feeds in 2023 (Free & Paid Tools) - Comparitech 3 What Are STIX/TAXII Standards? - Anomali Resources 4 What is STIX/TAXII? | Cloudflare 5 Sample Use | TAXII Project Documentation - GitHub Pages 6 Trying to retrieve xml data with taxii - Stack Overflow 7 CISA AIS TAXII Server Connection Guide 8 CISA AIS TAXII Server Connection Guide v2.0 | CISA Show Answer Question # 12 A security analyst found the following vulnerability on the company’s website:<INPUT TYPE=“IMAGE” SRC=“javascript:alert(‘test’);”>Which of the following should be implemented to prevent this type of attack in the future? A. Input sanitization B. Output encoding C. Code obfuscation D. Prepared statements Answer: A Explanation: This is a type of web application vulnerability called cross-site scripting (XSS), which allows an attacker to inject malicious code into a web page that is viewed by other users. XSS can be used to steal cookies, session tokens, credentials, or other sensitive information, or to perform actions on behalf of the victim. Input sanitization is a technique that prevents XSS attacks by checking and filtering the user input before processing it. Input sanitization can remove or encode any characters or strings that may be interpreted as code by the browser, such as <, >, ", ', or javascript:. Input sanitization can also validate the input against a predefined format or range of values, and reject any input that does not match. Output encoding is a technique that prevents XSS attacks by encoding the output before sending it to the browser. Output encoding can convert any characters or strings that may be interpreted as code by the browser into harmless entities, such as <, >, ", ', or javascript:. Output encoding can also escape any special characters that may have a different meaning in different contexts, such as , /, or ;. Code obfuscation is a technique that makes the source code of a web application more difficult to read and understand by humans. Code obfuscation can use techniques such as renaming variables and functions, removing comments and whitespace, replacing literals with expressions, or adding dummy code. Code obfuscation can help protect the intellectual property and trade secrets of a web application, but it does not prevent XSS attacks. Show Answer Question # 13 A systems administrator receives reports of an internet-accessible Linux server that isrunning very sluggishly. The administrator examines the server, sees a high amount ofmemory utilization, and suspects a DoS attack related to half-open TCP sessionsconsuming memory. Which of the following tools would best help to prove whether thisserver was experiencing this behavior? A. Nmap B. TCPDump C. SIEM D. EDR Answer: B Explanation: TCPDump is the best tool to prove whether the server was experiencing a DoS attack related to half-open TCP sessions consuming memory. TCPDump is a command-line tool that can capture and analyze network traffic, such as TCP, UDP, and ICMP packets. TCPDump can help the administrator to identify the source and destination of the traffic, the TCP flags and sequence numbers, the packet size and frequency, and other information that can indicate a DoS attack. A DoS attack related to half-open TCP sessions is also known as a SYN flood attack, which is a type of volumetric attack that aims to exhaust the network bandwidth or resources of the target server by sending a large amount of TCP SYN requests and ignoring the TCP SYN-ACK responses. This creates a backlog of half-open connections on the server, which consume memory and CPU resources, and prevent legitimate connections from being established12. TCPDump can help the administrator to detect a SYN flood attack by looking for a high number of TCP SYN packets with different source IP addresses, a low number of TCP SYN-ACK packets, and a very low number of TCP ACK packets34. References: SYN flood DDoS attack | Cloudflare, What is a SYN flood attack and how to prevent it? | NETSCOUT, TCPDump - A Powerful Tool for Network Analysis and Security, How to Detect a SYN Flood Attack with TCPDump Show Answer Question # 14 Which of the following is the best action to take after the conclusion of a security incident toimprove incident response in the future? A. Develop a call tree to inform impacted users B. Schedule a review with all teams to discuss what occurred C. Create an executive summary to update company leadership D. Review regulatory compliance with public relations for official notification Answer: B Explanation: One of the best actions to take after the conclusion of a security incident to improve incident response in the future is to schedule a review with all teams to discuss what occurred, what went well, what went wrong, and what can be improved. This review is also known as a lessons learned session or an after-action report. The purpose of this review is to identify the root causes of the incident, evaluate the effectiveness of the incident response process, document any gaps or weaknesses in the security controls, and recommend corrective actions or preventive measures for future incidents. Official References: https://www.eccouncil.org/cybersecurity-exchange/threat-intelligence/cyberkill- chain-seven-steps-cyberattack/ Show Answer Question # 15 Which of the following should be updated after a lessons-learned review? A. Disaster recovery plan B. Business continuity plan C. Tabletop exercise D. Incident response plan Answer: D Explanation: A lessons-learned review is a process of evaluating the effectiveness and efficiency of the incident response plan after an incident or an exercise. The purpose of the review is to identify the strengths and weaknesses of the incident response plan, and to update it accordingly to improve the future performance and resilience of the organization. Therefore, the incident response plan should be updated after a lessons-learned review. References: The answer was based on the NCSC CAF guidance from the National Cyber Security Centre, which states: “You should use post-incident and post-exercise reviews to actively reduce the risks associated with the same, or similar, incidents happening in future. Lessons learned can inform any aspect of your cyber security, including: System configuration Security monitoring and reporting Investigation procedures Containment/recovery strategies” Show Answer Question # 16 A malicious actor has gained access to an internal network by means of social engineering.The actor does not want to lose access in order to continue the attack. Which of thefollowing best describes the current stage of the Cyber Kill Chain that the threat actor iscurrently operating in? A. Weaponization B. Reconnaissance C. Delivery D. Exploitation Answer: D Explanation: The Cyber Kill Chain is a framework that describes the stages of a cyberattack from reconnaissance to actions on objectives. The exploitation stage is where attackers take advantage of the vulnerabilities they have discovered in previous stages to further infiltrate a target’s network and achieve their objectives. In this case, the malicious actor has gained access to an internal network by means of social engineering and does not want to lose access in order to continue the attack. This indicates that the actor is in the exploitation stage of the Cyber Kill Chain. Official References: https://www.lockheedmartin.com/en-us/capabilities/cyber/cyber-kill-chain.ht Show Answer Question # 17 Which of the following best describes the process of requiring remediation of a knownthreat within a given time frame? A. SLA B. MOU C. Best-effort patching D. Organizational governance Answer: A Explanation: An SLA (Service Level Agreement) is a contract or agreement between a service provider and a customer that defines the expected level of service, performance, quality, and availability of the service. An SLA also specifies the responsibilities, obligations, and penalties for both parties in case of non-compliance or breach of the agreement. An SLA can help organizations to ensure that their security services are delivered in a timely and effective manner, and that any security incidents or vulnerabilities are addressed and resolved within a specified time frame. An SLA can also help to establish clear communication, expectations, and accountability between the service provider and the customer12 An MOU (Memorandum of Understanding) is a document that expresses a mutual agreement or understanding between two or more parties on a common goal or objective. An MOU is not legally binding, but it can serve as a basis for future cooperation or collaboration. An MOU may not be suitable for requiring remediation of a known threat within a given time frame, as it does not have the same level of enforceability, specificity, or measurability as an SLA. Best-effort patching is an informal and ad hoc approach to applying security patches or updates to systems or software. Best-effort patching does not follow any defined process, policy, or schedule, and relies on the availability and discretion of the system administrators or users. Best-effort patching may not be effective or efficient for requiring remediation of a known threat within a given time frame, as it does not guarantee that the patches are applied correctly, consistently, or promptly. Best-effort patching may also introduce new risks or vulnerabilities due to human error, compatibility issues, or lack of testing. Organizational governance is the framework of rules, policies, procedures, and processes that guide and direct the activities and decisions of an organization. Organizational governance can help to establish the roles, responsibilities, and accountabilities of different stakeholders within the organization, as well as the goals, values, and principles that shape the organizational culture and behavior. Organizational governance can also help to ensure compliance with internal and external standards, regulations, and laws. Organizational governance may not be sufficient for requiring remediation of a known threat within a given time frame, as it does not specify the details or metrics of the service delivery or performance. Organizational governance may also vary depending on the size, structure, and nature of the organization. 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