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CompTIA CS0-003 Exam Syllabus Topics:

SectionWeightObjectives
Incident Response20%- Digital Forensics
  • 1. Chain of custody
  • 2. Evidence collection and preservation
  • 3. Forensic imaging
- Incident Response Process
  • 1. Preparation and detection
  • 2. Containment, eradication, and recovery
  • 3. Lessons learned and post-incident activities
- Incident Response Techniques
  • 1. Denial of service incident response
  • 2. Unauthorized access incident response
  • 3. Malware incident response
Threat and Attack Analysis20%- Threat Intelligence
  • 1. Threat intelligence types and sources
  • 2. Indicators of compromise (IOC)
  • 3. Threat intelligence frameworks (MITRE ATT&CK, STIX/TAXII)
  • 4. Threat actor identification
- Threat Analysis Process
  • 1. Anomaly detection
  • 2. Traffic and activity analysis
  • 3. Behavioral analysis
Vulnerability Management30%- Vulnerability Validation
  • 1. Vulnerability scanning validation
  • 2. Penetration testing verification
- Vulnerability Response and Remediation
  • 1. Exception handling
  • 2. Remediation workflow
  • 3. Risk acceptance and mitigation strategies
- Vulnerability Identification
  • 1. Vulnerability scanning tools
  • 2. False positive/negative analysis
  • 3. Asset inventory and prioritization
Reporting and Communication0%- Metrics and Reporting
  • 1. MTTR (Mean Time to Respond/Detect)
  • 2. Key metrics development
  • 3. Security reporting
  • 4. Security maturity models
- Communication Strategies
  • 1. Stakeholder communication
  • 2. Risk management communication
Security Operations30%- Security Monitoring
  • 1. Security event collection and correlation
  • 2. SOAR (Security Orchestration, Automation, and Response)
  • 3. Log types and log analysis
  • 4. SIEM (Security Information and Event Management)
  • 5. Data sources for security monitoring
- Security Posture Assessment
  • 1. Penetration testing fundamentals
  • 2. Configuration management
  • 3. Vulnerability scanning and analysis
- Intrusion Detection/Prevention
  • 1. Host-based IDS/IPS
  • 2. Indicator identification
  • 3. Network-based IDS/IPS

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CompTIA CS0-003 Practice Exams Questions

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CompTIA Cybersecurity Analyst (CySA+) Certification Exam Sample Questions (Q173-Q178):

NEW QUESTION # 173
An analyst finds that an IP address outside of the company network that is being used to run network and vulnerability scans across external-facing assets. Which of the following steps of an attack framework is the analyst witnessing?

Answer: C

Explanation:
Reconnaissance is the first step in most attack frameworks. It is the process of gathering information about a target in order to plan an attack. This information can include things like the target's network topology, IP addresses, and open ports.
In this case, the analyst has found that an IP address outside of the company network is being used to run network and vulnerability scans across external-facing assets. This is a clear sign that the IP address is being used for reconnaissance.


NEW QUESTION # 174
A security analyst is reviewing events that occurred during a possible compromise. The analyst obtains the following log:

Which of the following is most likely occurring, based on the events in the log?

Answer: D

Explanation:
1. Analyze the Log Evidence: The log displays a specific sequence of rapid-fire events (within 18 seconds) characteristic of automated reconnaissance tools used to map Active Directory environments.
* 20:06:05 (LDAP Reads): The attacker queries the directory for high-value groups (Domain Admins) and critical infrastructure (Domain Servers). They are not trying to log in; they are reading the membership lists to see who is important and where the servers are.
* 20:06:09 (EDR Enumeration): The attacker checks the local Administrators group. This is to see if the current compromised user has admin rights or who does.
* 20:06:23 (SMB Connections): The host PC021 attempts to connect to multiple other hosts. This indicates the attacker is testing where they can move laterally using the credentials or access they currently have.
2. Why this is " Finding the Shortest Path " (Option A): This behavior is the textbook signature of tools like BloodHound (or its data collector, SharpHound).
* Concept: Adversaries use these tools to visualize relationships in Active Directory. They query LDAP to find out: " I am User A. Which computers can I access? Who is a Domain Admin? Is a Domain Admin logged into a computer I can access? "
* Goal: The tool calculates the mathematical " shortest path " (graph theory) from the attacker ' s current low-level foothold to the ultimate target (Domain Admin).
* The combination of LDAP querying (mapping the graph) and SMB connection attempts (verifying sessions/local admin rights) confirms the adversary is mapping out the network to find the most efficient route to total compromise.
Why the other options are incorrect:
* B. An adversary is performing a vulnerability scan: Vulnerability scanners (like Nessus or Qualys) typically probe ports and services to identify unpatched software (CVEs). They generally do not focus on querying LDAP for " Domain Admins " group membership as their primary action.
* C. An adversary is escalating privileges: While the attacker intends to escalate privileges eventually, the logs show enumeration (Discovery phase). They are currently looking for the path to escalate, not actively exploiting a vulnerability (like a kernel exploit) to change their privilege level in this specific snapshot.
* D. An adversary is performing a password stuffing attack: Password stuffing involves high volumes of failed authentication attempts against a login service. The logs here show read operations and connection attempts, not the " Invalid Credential " errors associated with stuffing.


NEW QUESTION # 175
An analyst is conducting routine vulnerability assessments on the company infrastructure. When performing these scans, a business-critical server crashes, and the cause is traced back to the vulnerability scanner. Which of the following is the cause of this issue?

Answer: B

Explanation:
The scanner is running in active mode, which is the cause of this issue. Active mode is a type of vulnerability scanning that sends probes or requests to the target systems to test their responses and identify potential vulnerabilities. Active mode can provide more accurate and comprehensive results, but it can also cause more network traffic, performance degradation, or system instability. In some cases, active mode can trigger denial- of-service (DoS) conditions or crash the target systems, especially if they are not configured to handle the scanning requests or if they have underlying vulnerabilities that can be exploited by the scanner12. Therefore, the analyst should use caution when performing active mode scanning, and avoid scanning business-critical or sensitive systems without proper authorization and preparation3. References: Vulnerability Scanning for my Server - Spiceworks Community, Negative Impacts of Automated Vulnerability Scanners and How ... - Acunetix, Vulnerability Scanning Best Practices


NEW QUESTION # 176
An analyst notices there is an internal device sending HTTPS traffic with additional characters in the header to a known-malicious IP in another country. Which of the following describes what the analyst has noticed?

Answer: A


NEW QUESTION # 177
A security analyst is responding to an incident that involves a malicious attack on a network data closet.
Which of the following best explains how the analyst should properly document the incident?

Answer: A

Explanation:
A "network data closet" attack is a physical-environment incident (hardware, cabling, physical access
/tampering). Proper documentation in such cases includes documenting the scene and physical state of impacted items so that investigators can reconstruct what was present, what was changed, and how things were connected.
The All-in-One CySA+ guide explicitly states that an important step is documenting the physical environment and that an easy way is to take lots of photos of the scene :
Exact extract (All-in-One Exam Guide):
"Another important... step is to document the entire physical environment around a device. An easy way to do this is to take lots of photos of the scene ." Why the other options are less correct:
* A is a recovery/ops task, not primary incident documentation of a physical attack scene.
* B may be useful in some contexts, but the best practice for a physical incident scene is to photograph impacted items and surroundings.
* C can help later, but it's not the first/best documentation action for a physical tampering incident compared to capturing the scene as-found.


NEW QUESTION # 178
......

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