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| Section | Weight | Objectives |
|---|---|---|
| Reporting and Communication | 17% | - Reporting requirements and standards
|
| Vulnerability Management | 30% | - Risk assessment and mitigation
|
| Security Operations | 33% | - Security monitoring concepts and tools
|
| Incident Response Management | 20% | - Digital forensics basics
|
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NEW QUESTION # 282
An analyst receives alerts that state the following traffic was identified on the perimeter network firewall:
Which of the following best describes the indicator of compromise that triggered the alerts?
Answer: D
Explanation:
The given firewall logs indicate high outbound traffic with low IP reputation, sustained over time, which is a strong indicator of cryptomining activity.
Option A (Anomalous activity) is a general term but does not specify why the activity is suspicious.
Option B (Bandwidth saturation) occurs when network traffic is overwhelming, but cryptomining typically uses CPU/GPU power rather than overwhelming bandwidth.
Option D (Denial of service - DoS) would result in continuous large requests, but cryptomining generates consistent, high-bandwidth outbound traffic rather than bursts of large requests.
Thus, C is the correct answer, as cryptomining generates unusual outbound network activity from internal hosts to mining pools.
NEW QUESTION # 283
The Chief Information Security Officer (CISO) of a large management firm has selected a cybersecurity framework that will help the organization demonstrate its investment in tools and systems to protect its data.
Which of the following did the CISO most likely select?
Answer: A
Explanation:
ISO 27001 is an international standard that establishes a framework for implementing, maintaining, and improving an information security management system (ISMS). It helps organizations demonstrate their commitment to protecting their data and complying with various regulations and best practices. The other options are not relevant for this purpose: PCI DSS is a standard that focuses on protecting payment card data; COBIT is a framework that provides guidance on governance and management of enterprise IT; ITIL is a framework that provides guidance on service management and delivery.
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 various cybersecurity frameworks and standards, such as ISO 27001, PCI DSS, COBIT, and ITIL, in chapter 1. Specifically, it explains the meaning and function of each framework and standard, such as ISO 27001, which provides a comprehensive approach to information security management1, page 29. Therefore, this is a reliable source to verify the answer to the question.
NEW QUESTION # 284
Based on recent alerts, a security analyst thinks a web application server was compromised. The analyst reviews the following server output:
Which of the following best describes what has occurred?
Answer: C
Explanation:
The output shows an active session for the user "www" connected from the external IP address
89.123.222.5 and running the Apache web directory process. Web server service accounts typically should not have interactive login sessions from external IP addresses. This indicates that an attacker likely initiated a remote session using the web service account, suggesting an unauthorized session on the server.
NEW QUESTION # 285
A security analyst has received an incident case regarding malware spreading out of control on a customer's network. The analyst is unsure how to respond. The configured EDR has automatically obtained a sample of the malware and its signature. Which of the following should the analyst perform next to determine the type of malware, based on its telemetry?
Answer: D
Explanation:
The signature of the malware is a unique identifier that can be used to compare it with known malware samples and their behaviors. Open-source threat intelligence sources provide information on various types of malware, their indicators of compromise, and their mitigation strategies. By cross-referencing the signature with these sources, the analyst can determine the type of malware and its telemetry. The other options are not relevant for this purpose: configuring the EDR to perform a full scan may not provide additional information on the malware type; transferring the malware to a sandbox environment may expose the analyst to further risks; logging in to the affected systems and running netstat may not reveal the malware activity.
Reference:
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 EDR, a tool used for endpoint security, in chapter 5. Specifically, it explains the meaning and function of malware signatures and how they can be used to identify malware types1, page 203. It also discusses the benefits and challenges of using open-source threat intelligence sources to enhance security analysis1, page 211. Therefore, this is a reliable source to verify the answer to the question.
NEW QUESTION # 286
A cloud team received an alert that unauthorized resources were being auto-provisioned. After investigating, the team suspects that crypto mining is occurring. Which of the following indicators would most likely lead the team to this conclusion?
.
Answer: C
Explanation:
High GPU utilization is the most likely indicator that cryptomining is occurring, as it reflects the intensive computational work that is required to solve the complex mathematical problems involved in mining cryptocurrencies. Cryptomining is the process of generating new units of a cryptocurrency by using computing power to verify transactions and create new blocks on the blockchain. Cryptomining can be done legitimately by individuals or groups who participate in a mining pool and share the rewards, or illegitimately by threat actors who use malware or scripts to hijack the computing resources of unsuspecting victims and use them for their own benefit. This practice is called cryptojacking, and it can cause performance degradation, increased power consumption, and security risks for the affected systems. Cryptomining typically relies on the GPU (graphics processing unit) rather than the CPU (central processing unit), as the GPU is better suited for parallel processing and can handle more calculations per second. Therefore, a high GPU utilization rate can be a sign that cryptomining is taking place on a system, especially if there is no other explanation for the increased workload. The other options are not as indicative of cryptomining as high GPU utilization, as they can have other causes or explanations. Bandwidth consumption can be affected by many factors, such as network traffic, streaming services, downloads, or updates. It is not directly related to cryptomining, which does not require a lot of bandwidth to communicate with the mining pool or the blockchain network. Unauthorized changes can be a result of many types of malware or cyberattacks, such as ransomware, spyware, or trojans.
They are not specific to cryptomining, which does not necessarily alter any files or settings on the system, but rather uses its processing power. Unusual traffic spikes can also be caused by various factors, such as legitimate surges in demand, distributed denial-of-service attacks, or botnets. They are not indicative of cryptomining, which does not generate a lot of traffic or requests to or from the system.
NEW QUESTION # 287
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