Free Practice Questions for CompTIA CS0-002 Exam

Threat modeling is a process that helps identify and analyze the potential threats and vulnerabilities of a system or process. It can help evaluate the security risks and mitigation strategies of a new business process that would use existing infrastructure to process and store sensitive data. A black-box penetration testing engagement, a tabletop exercise, or a business impact analysis are other methods that can be used to assess the security or resilience of a system or process, but they are not as appropriate as threat modeling for coordinating the right training and testing methodology to respond to new business initiatives or significant changes to existing ones. Reference: https://owasp.org/www-community/Application_Threat_Modeling

Threat feeds are sources of information that provide timely and relevant data about current or emerging cyber threats, such as indicators of compromise (IOCs), tactics, techniques, and procedures (TTPs), or threat actors. An IDS, or intrusion detection system, is a tool that monitors network traffic and detects malicious or anomalous activities based on predefined or custom rules. Using an automated subscription to select threat feeds for IDS can help to improve security monitoring capabilities by providing the security team with up-to-date and actionable intelligence that can enhance the detection and response to cyberattacks

The security incident response process is a set of procedures and guidelines that define how to identify, contain, analyze, and recover from security incidents that compromise the confidentiality, integrity, or availability of an organization’s assets or operations. Initiating the security incident response process for unauthorized access is the first and most appropriate action that the analyst should take, as it would allow the analyst to follow a structured and consistent approach to handle the situation and mitigate the impact of the incident1.

An incident communications process is a set of procedures that defines how to communicate with internal and external stakeholders during and after an incident, such as customers, employees, management, regulators and media. An incident communications process can help to provide accurate, timely and consistent information about the incident, its impact and the actions taken to resolve it. An incident communications process can also help to maintain trust and reputation, comply with legal obligations and prevent misinformation or confusion3 .

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Web server enumeration is the process of identifying information about a web server, such as its software version, operating system, configuration, services, and vulnerabilities. This can be done using tools like Nmap, which can scan ports and run scripts to gather information. In this question, the Nmap command is using the -p option to scan ports 80, 8000, and 443, which are commonly used for web services. It is also using the --script option to run scripts that start with http-*, which are related to web server enumeration. The output file name server.out also suggests that the purpose of the scan is to enumerate web servers. References: CompTIA Cybersecurity Analyst (CySA+) Certification Exam Objectives (CS0-002), page 8; https://partners.comptia.org/docs/default-source/resources/comptia-cysa-cs0-002-exam-objectives

The security team should perform postmortem data correlation next after receiving notification of the incident from the help desk technician. Postmortem data correlation is an activity that involves analyzing data from various sources (such as logs, alerts, reports, etc.) to identify root causes, impacts, indicators of compromise (IoCs), lessons learned, and recommendations for improvement after an incident3. Postmortem data correlation can help the security team to:

Determine how the incident occurred and how it was detected and resolved

Assess the scope and severity of the incident and its effects on confidentiality, integrity, and availability

Identify any gaps or weaknesses in security controls or processes that contributed to the incident

Develop action plans or remediation strategies to prevent recurrence or mitigate future incidents

A forensic analyst is conducting an investigation on a compromised server. The first step that the analyst should do to preserve evidence is to back up all log files and audit trails. This will ensure that the analyst has a copy of the original data that can be used for analysis and verification. Backing up the log files and audit trails will also prevent any tampering or modification of the evidence by the attacker or other parties. The other options are not the first steps or may alter or destroy the evidence. References: CompTIA Cybersecurity Analyst (CySA+) Certification Exam Objectives (CS0-002), page 16; https://www.nist.gov/publications/guide-collection-and-preservation-digital-evidence

The syslog entries show the attempts of users to run commands with elevated permissions on two servers: webserver and financeserver. The entries include the date and time, the server name, the command used (su or sudo), the user name, and the outcome (success or failed). The policy of the organization states that users should always run commands under their own account, with temporary administrator privileges if necessary. This means that users should use sudo to run commands as another user (usually root), rather than su to switch to another user’s account. Therefore, the entry that should cause the analyst the most concern is D. <100> 2020-01-10T19:34…002z financeserver su 201 32001 = BOM ’ su vi success. This entry shows that someone used su to switch to another user’s account on the financeserver and successfully edited a file with vi. This could indicate an unauthorized access or a compromised account.