Free CS0-003 Practice Exam Questions

An organization has experienced a breach of customer transactions. Under the terms of PCI DSS, which of the following groups should the organization report the breach to?

A. PCI Security Standards Council

B. Local law enforcement

C. Federal law enforcement

D. Card issuer

Under the terms of PCI DSS, an organization that has experienced a breach of customer transactions should report the breach to the card issuer. The card issuer is the financial institution that issues the payment cards to the customers and that is responsible for authorizing and processing the transactions. The card issuer may have specific reporting requirements and procedures for the organization to follow in the event of a breach. The organization should also notify other parties that may be affected by the breach, such as customers, law enforcement, or regulators, depending on the nature and scope of the breach. Official References: https://www.pcisecuritystandards.org/

An organization was compromised, and the usernames and passwords of all em-ployees were leaked online. Which of the following best describes the remedia-tion that could reduce the impact of this situation?

A. Multifactor authentication

B. Password changes

C. System hardening

D. Password encryption

A. Multifactor authentication

Multifactor authentication (MFA) is a security method that requires users to provide two or more pieces of evidence to verify their identity, such as a password, a PIN, a fingerprint, or a one-time code. MFA can reduce the impact of a credential leak because even if the attackers have the usernames and passwords of the employees, they would still need another factor to access the organization’s systems and resources. Password changes, system hardening, and password encryption are also good security practices, but they do not address the immediate threat of compromised credentials.

References: CompTIA CySA+ Certification Exam Objectives, [What Is Multifactor Authentication (MFA)?]

A SOC analyst determined that a significant number of the reported alarms could be closed after removing the duplicates. Which of the following could help the analyst reduce the number of alarms with the least effort?

A. SOAR

B. API

C. XDR

D. REST

A. SOAR

Security Orchestration, Automation, and Response (SOAR) can help the SOC analyst reduce the number of alarms by automating the process of removing duplicates and managing security alerts more efficiently. SOAR platforms enable security teams to define, prioritize, and standardize response procedures, which helps in reducing the workload and improving the overall efficiency of incident response by handling repetitive and low-level tasks automatically.

During a scan of a web server in the perimeter network, a vulnerability was identified that could be exploited over port 3389. The web server is protected by a WAF. Which of the following best represents the change to overall risk associated with this vulnerability?

A. The risk would not change because network firewalls are in use.

B. The risk would decrease because RDP is blocked by the firewall.

C. The risk would decrease because a web application firewall is in place.

D. The risk would increase because the host is external facing.

B. The risk would decrease because RDP is blocked by the firewall.

Port 3389 is commonly used by Remote Desktop Protocol (RDP), which is a service that allows remote access to a system. A vulnerability on this port could allow an attacker to compromise the web server or use it as a pivot point to access other systems. However, if the firewall blocks this port, the risk of exploitation is reduced.

References: CompTIA CySA+ CS0-003 Certification Study Guide, Chapter 2: Software and Systems Security, page 67; CompTIA CySA+ Study Guide: Exam CS0-003, 3rd Edition, Chapter 3: Software and Systems Security, page 103

An attacker recently gained unauthorized access to a financial institution's database, which contains confidential information. The attacker exfiltrated a large amount of data before being detected and blocked. A security analyst needs to complete a root cause analysis to determine how the attacker was able to gain access. Which of the following should the

analyst perform first?

A. Document the incident and any findings related to the attack for future reference.

B. Interview employees responsible for managing the affected systems.

C. Review the log files that record all events related to client applications and user access.

D.

Identify the immediate actions that need to be taken to contain the incident and minimize

damage.

C. Review the log files that record all events related to client applications and user access.

In a root cause analysis following unauthorized access, the initial step is usually to review relevant log files. These logs can provide critical information about how and when the attacker gained access. The first step in a root cause analysis after a data breach is typically to review the logs. This helps the analyst understand how the attacker gained access by providing a detailed record of all events, including unauthorized or abnormal activities. Documenting the

incident, interviewing employees, and identifying immediate containment actions are important steps, but they usually follow the initial log review.

CS0-003 Practice Test