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CompTIA Cybersecurity Analyst (CySA+) Certification exam, also known as CS0-003, is a 165-minute exam that consists of 85 multiple-choice and performance-based questions. CS0-003 exam is designed to test the candidate's ability to identify, analyze, and respond to security threats and incidents. CS0-003 Exam covers a wide range of topics, including network security, security operations and monitoring, threat intelligence, and incident response.
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CompTIA CS0-003 exam is the latest version of the CySA+ certification exam. It was released in November 2020 and includes updated content and new exam objectives. CS0-003 exam is designed to test the skills and knowledge required to perform the job of a cybersecurity analyst. It covers a range of topics, including threat management, vulnerability management, incident response, security architecture and toolsets, and more. CS0-003 Exam consists of 85 multiple-choice and performance-based questions and has a time limit of 165 minutes.
NEW QUESTION # 94
A company brings in a consultant to make improvements to its website. After the consultant leaves. a web developer notices unusual activity on the website and submits a suspicious file containing the following code to the security team:
Which of the following did the consultant do?
Answer: A
Explanation:
The correct answer is A. Implanted a backdoor.
A backdoor is a method that allows an unauthorized user to access a system or network without the permission or knowledge of the owner. A backdoor can be installed by exploiting a software vulnerability, by using malware, or by physically modifying the hardware or firmware of the device. A backdoor can be used for various malicious purposes, such as stealing data, installing malware, executing commands, or taking control of the system.
In this case, the consultant implanted a backdoor in the website by using an HTML and PHP code snippet that displays an image of a shutdown button and an alert message that says "Exit". However, the code also echoes the remote address of the server, which means that it sends the IP address of the visitor to the attacker. This way, the attacker can identify and target the visitors of the website and use their IP addresses to launch further attacks or gain access to their devices.
The code snippet is an example of a clickjacking attack, which is a type of interface-based attack that tricks a user into clicking on a hidden or disguised element on a webpage. However, clickjacking is not the main goal of the consultant, but rather a means to implant the backdoor. Therefore, option C is incorrect.
Option B is also incorrect because privilege escalation is an attack technique that allows an attacker to gain higher or more permissions than they are supposed to have on a system or network. Privilege escalation can be achieved by exploiting a software vulnerability, by using malware, or by abusing misconfigurations or weak access controls. However, there is no evidence that the consultant implemented privilege escalation on the website or gained any elevated privileges.
Option D is also incorrect because patching is a process of applying updates to software to fix errors, improve performance, or enhance security. Patching can prevent or mitigate various types of attacks, such as exploits, malware infections, or denial-of-service attacks. However, there is no indication that the consultant patched the web server or improved its security in any way.
References:
* 1 What Is a Backdoor & How to Prevent Backdoor Attacks (2023)
* 2 What is Clickjacking? Tutorial & Examples | Web Security Academy
* 3 What Is Privilege Escalation and How It Relates to Web Security | Acunetix
* 4 What Is Patching? | Best Practices For Patch Management - cWatch Blog
NEW QUESTION # 95
A security analyst receives an alert with the following packet capture:
Which of the following conclusions should the analyst reach about this incident?
Answer: B
Explanation:
The capture shows rapid SYNs to two well-known ports (80 and 443) from the same source, immediately followed by RSTs from the target - classic behavior of a SYN-based port scan.
Nmap's default scan (SYN scan) operates exactly this way, probing ports and tearing down connections if no SYN-ACK is returned.
NEW QUESTION # 96
During an incident, analysts need to rapidly investigate by the investigation and leadership teams.
Which of the following best describes how PII should be safeguarded during an incident?
Answer: A
Explanation:
The best option to safeguard PII during an incident is to ensure permissions are limited in the investigation team and encrypt the data. This is because limiting permissions reduces the risk of unauthorized access or leakage of sensitive data, and encryption protects the data from being read or modified by anyone who does not have the decryption key.
NEW QUESTION # 97
A security analyst is validating a particular finding that was reported in a web application vulnerability scan to make sure it is not a false positive. The security analyst uses the snippet below:
Which of the following vulnerability types is the security analyst validating?
Answer: A
Explanation:
XSS (cross-site scripting) is the vulnerability type that the security analyst is validating, as the snippet shows an attempt to inject a script tag into the web application. XSS is a web security vulnerability that allows an attacker to execute arbitrary JavaScript code in the browser of another user who visits the vulnerable website.
XSS can be used to perform various malicious actions, such as stealing cookies, session hijacking, phishing, or defacing websites. The other vulnerability types are not relevant to the snippet, as they involve different kinds of attacks. Directory traversal is an attack that allows an attacker to access files and directories that are outside of the web root folder. XXE (XML external entity) injection is an attack that allows an attacker to interfere with an application's processing of XML data, and potentially access files or systems. SSRF (server- side request forgery) is an attack that allows an attacker to induce the server-side application to make requests to an unintended location. Official References:
* https://portswigger.net/web-security/xxe
* https://portswigger.net/web-security/ssrf
* https://cheatsheetseries.owasp.org/cheatsheets/Server_Side_Request_Forgery_Prevention_Cheat_Sheet.
html
NEW QUESTION # 98
After an incident, a security analyst needs to perform a forensic analysis to report complete information to a company stakeholder. Which of the following is most likely the goal of the forensic analysis in this case?
Answer: A
Explanation:
Comprehensive and Detailed Explanation:
The goal of forensic analysis in a post-incident scenario is to identify the root cause of the incident. This helps prevent future occurrences and enhances the security posture of the organization.
* Option A (Full picture of risks) is more aligned with a risk assessment rather than forensic analysis.
* Option B (Notifying law enforcement) depends on the situation, but forensic analysis is performed even when legal action is not involved.
* Option C (Further containment) is part of incident response, but forensic analysis happens after containment.
Thus, D is the correct answer, as determining root cause is the key objective of forensic analysis.
NEW QUESTION # 99
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