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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Cybersecurity Analyst (CySA+) Certification Exam CS0-003 |
| Exam Number: | CS0-003 |
| Real Exam Qty: | Up to 85 |
| Certificate Validity Period: | 3 years |
| Exam Price: | USD 392 (may vary by region/tax) |
| Passing Score: | 750 (on a scale of 100-900) |
| Exam Duration: | 165 minutes |
| Exam Format: | Performance-based questions, Multiple-choice |
| Available Languages: | Portuguese, English, Japanese, Thai |
| Related Certifications: | CompTIA Security+ CompTIA PenTest+ CompTIA Network+ |
| Recommended Training: | CompTIA CertMaster Learn CySA+ Cybrary CySA+ Training |
| Exam Registration: | Pearson VUE Exam Registration CompTIA Certification Portal |
| Sample Questions: | CompTIA CS0-003 Sample Questions |
| Exam Way: | Online proctored or in-person at Pearson VUE testing centers |
| Pre Condition: | Recommended: CompTIA Security+ or equivalent knowledge in networking and security fundamentals |
| Official Syllabus URL: | https://www.comptia.org/certifications/cybersecurity-analyst |
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CompTIA CySA+ certification exam is a valuable credential for professionals looking to enhance their knowledge and skills in the cybersecurity domain. It validates an individual's ability to identify and mitigate cybersecurity threats, vulnerabilities and risks. CompTIA Cybersecurity Analyst (CySA+) Certification Exam certification is globally recognized, vendor-neutral and is a requirement for many cybersecurity roles. If you are looking to advance your career in cybersecurity, the CySA+ certification is definitely worth considering.
NEW QUESTION # 186
A SOC analyst identifies the following content while examining the output of a debugger command over a client-server application:
getconnection (database01, "alpha " , "AXTV. 127GdCx94GTd") ;
Which of the following is the most likely vulnerability in this system?
Answer: C
Explanation:
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.
NEW QUESTION # 187
A security analyst is tasked with prioritizing vulnerabilities for remediation. The relevant company security policies are shown below:
Security Policy 1006: Vulnerability Management
1. The Company shall use the CVSSv3.1 Base Score Metrics (Exploitability and Impact) to prioritize the remediation of security vulnerabilities.
2. In situations where a choice must be made between confidentiality and availability, the Company shall prioritize confidentiality of data over availability of systems and data.
3. The Company shall prioritize patching of publicly available systems and services over patching of internally available system.
According to the security policy, which of the following vulnerabilities should be the highest priority to patch?
Answer: C
Explanation:
Explanation
According to the security policy, the company shall use the CVSSv3.1 Base Score Metrics to prioritize the remediation of security vulnerabilities. Option C has the highest CVSSv3.1 Base Score of 9.8, which indicates a critical severity level. The company shall also prioritize confidentiality of data over availability of systems and data, and option C has a high impact on confidentiality (C:H). Finally, the company shall prioritize patching of publicly available systems and services over patching of internally available systems, and option C affects a public-facing web server. Official References: https://www.first.org/cvss/
NEW QUESTION # 188
A security operations center receives the following alerts related to an organization ' s cloud tenant:
Which of the following should an analyst do first to identify the initial compromise?
Answer: D
Explanation:
To identify the initial compromise, the analyst should start with the earliest suspicious activity in the timeline and pivot into the audit logs for the principal (identity) associated with that first alert.
Here, the first notable event is 02:00 excessive API failures tied to jdoe12@myorg.com. That commonly indicates password guessing, token misuse, or other authentication abuse attempts. The next events (02:15 metadata service access, 05:10 mass VM creation by a service account, 05:40 malware) look like follow-on activity after an initial foothold. Therefore, the best first step is to check whether those API failures were followed by any successful API calls by that user and then correlate those successful actions to the later stages in project staging-01.
This approach aligns with CySA+ guidance that analysts should use logs + timestamps to build a timeline and correlate events across identities/systems to understand scope and progression:
* Sybex emphasizes correlating events from multiple sources and using that correlation to determine scope and impact:Exact extract (Sybex Study Guide): "Security analysts are often asked to help analyze that data... Knowing if other events are correlated with the initial event... [and] understanding what systems, users, services, or other assets were involved..."
* Secbay underscores that logs and timestamps are key to forming an accurate incident timeline (which is exactly what we're doing by starting from the earliest alert):Exact extract (Secbay Press): "System and application logs with timestamps help create a timeline of events, aiding in understanding when specific actions occurred during the incident." Why Option B is best vs. the others
* B starts with the earliest suspicious identity and seeks successful API activity that would confirm compromise and explain subsequent actions (metadata access # service account actions # malware).
* A is too broad initially ("all activity under project staging-01") and anchors on a VM that only appears later; it's not the best first pivot when you already have an earlier suspect identity.
* C starts at the compute-instance phase (05:10) rather than the earliest authentication/API anomaly (02:
00), so it's more likely to find post-compromise actions rather than the initial entry.
* D anchors on a specific later VM (fd031f) and compute APIs, again likely after the initial compromise.
References (CompTIA CySA+ CS0-003 documents / study guides used):
* Mike Chapple & David Seidl, CompTIA CySA+ Study Guide (CS0-003): correlate other events with the initial event; identify involved users/systems/services
* Secbay Press, CompTIA CySA+ Exam Prep Guide (CS0-003): logs + timestamps build a timeline of events and support analysis of incident progression
NEW QUESTION # 189
A software developer has been deploying web applications with common security risks to include insufficient logging capabilities. Which of the following actions would be most effective to reduce risks associated with the application development?
Answer: C
Explanation:
Conducting regular code reviews using OWASP best practices is the most effective action to reduce risks associated with the application development. Code reviews are a systematic examination of the source code of an application to detect and fix errors, vulnerabilities, and weaknesses that may compromise the security, functionality, or performance of the application. Code reviews can help to improve the quality and security of the code, as well as to identify and remediate common security risks, such as insufficient logging capabilities. OWASP (Open Web Application Security Project) is a global nonprofit organization that provides free and open resources, tools, standards, and best practices for web application security. OWASP best practices for logging include following a common logging format and approach, logging relevant security events and data, protecting log data from unauthorized access or modification, and using log analysis and monitoring tools to detect and respond to security incidents. By following OWASP best practices for logging, developers can ensure that their web applications have sufficient and effective logging capabilities that can help to prevent, detect, and mitigate security threats.
NEW QUESTION # 190
An organization's website was maliciously altered.
INSTRUCTIONS
Review information in each tab to select the source IP the analyst should be concerned about, the indicator of compromise, and the two appropriate corrective actions.
Answer:
Explanation:
see the explanation for step by step solution.
Explanation:
Step 1: Analyzing the SFTP Log
The SFTP log provides a record of file transfer and login activities:
* User "sjames" logged in from several IP addresses:
* 192.168.10.32 and 192.168.10.37 (internal network IPs)
* 32.111.16.37 and 41.21.18.102 (external IPs)
* We see file alterations in the /var/www directory, which is commonly the web directory.
* Modified files: about_us.html, index.html
* Suspicious activity:
* 192.168.11.102 and 41.21.18.102 modified the files.
* 32.111.16.37 had failed login attempts, indicating possible unauthorized access attempts.
The most suspicious IP here is 41.21.18.102, as it's associated with direct file modifications, possibly indicating unauthorized access.
Step 2: Reviewing Netstat
The netstat output shows active connections and their states:
* IP 41.21.18.102 has an ESTABLISHED connection with port 22, commonly used for SFTP.
* IP 32.111.16.37 is also attempting connections, and 32.111.16.37 connections are in a TIME_WAIT state, showing prior connections were recently closed.
The netstat output reaffirms 41.21.18.102 is actively connected and potentially involved in malicious activities.
Step 3: Checking the HTTP Access Log
The HTTP Access log shows access to about_us.html:
* 32.111.16.37 repeatedly accessed /about_us.html with 404 errors, indicating attempts to reach non- existing pages.
* 41.21.18.102 accessed the 200 status code, showing successful page requests, but since this IP was modifying files directly on the server, it might be testing or verifying changes.
Again, 41.21.18.102 stands out as it matches both successful file modification and page request patterns, while 32.111.16.37 shows unsuccessful attempts.
Step 4: Selecting the IP of Concern
Based on the above analysis:
* answer: 41.21.18.102 should be the IP of concern due to its direct file modifications on critical web files (about_us.html, index.html).
Step 5: Identifying the Indicator of Compromise
Potential indicators include unauthorized file modifications:
* Modified index.html file is the correct answer, as it indicates direct changes to website content and is often a clear sign of compromise.
Step 6: Selecting Corrective Actions
To mitigate and prevent further compromise:
* Change the password on the "sjames" account: The account was used across various IPs, indicating potential account compromise.
* Block external SFTP access: Restricting SFTP to internal IPs only would prevent unauthorized external modifications. Since 41.21.18.102 was external, this would stop similar threats.
Summary
* IP of Concern: 41.21.18.102
* Indicator of Compromise: Modified index.html file
* Corrective Actions:
* Change the password on the sjames account
* Block external SFTP access
These selections address both the immediate security breach and implement a preventative measure against future unauthorized access.
NEW QUESTION # 191
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