Free Practice Questions for CompTIA CS0-002 Exam

A mobile device wiping solution is a security feature that allows an organization to remotely erase or delete all data on a mobile device if it is lost or stolen2 A mobile device wiping solution can help protect the privacy of the data on a device and prevent unauthorized access or disclosure of sensitive information. A mobile device wiping solution can be implemented using built-in features of some mobile operating systems, third-party applications, or mobile device management (MDM) software.

Data Sovereignty means that data is subject to the laws and regulations of the geographic location where that data is collected and processed. Data sovereignty is a country-specific requirement that data must remain within the borders of the jurisdiction where it originated. At its core, data sovereignty is about protecting sensitive, private data and ensuring it remains under the control of its owner. You're only worried about that if you're in multiple locations. . https://www.virtru.com/blog/gdpr-data-sovereignty-matters-globally

Geographic access requirements are an appropriate technical control to implement to mitigate data sovereignty issues. Data sovereignty issues arise when data is subject to different laws and regulations depending on where it is stored or processed. For example, some countries may have stricter data protection or privacy laws than others, or may impose restrictions on cross-border data transfers. Geographic access requirements can help ensure that data is only accessed from locations that comply with the applicable laws and regulations, and prevent unauthorized access from locations that do not.

The software development life cycle (SDLC) is a process that consists of several phases that guide the development of software applications or systems. Security should be involved in every phase of the SDLC, but especially in the planning phase, which is the first phase where the scope, objectives, requirements, and resources of the project are defined. By involving security in the planning phase, potential risks and threats can be identified and mitigated early in the process, which can save time, money, and effort later on. Design, maintenance, implementation, analysis, and testing are other phases of the SDLC, but they are not the first phase where security should be involved. Reference: https://www.bmc.com/blogs/software-development-life-cycle-phases/

Modbus is an industrial control system (ICS) network protocol that is used for communication between devices such as sensors, controllers, actuators, and monitors. Modbus has no inherent security functions on TCP port 502, which is the default port for Modbus TCP/IP communication. Modbus does not provide any encryption, authentication, or integrity protection for the data transmitted over the network, making it vulnerable to various attacks such as replay, modification, spoofing, or denial-of-service.

Disabling the Telnet service would harden the server by removing an insecure protocol that transmits data in cleartext and could allow unauthorized access to the server. Changing the SSH port to a non-standard port would harden the server by reducing the exposure to brute-force attacks or port scans that target the default SSH port (22). Uninstalling the DNS service, performing a vulnerability scan, changing the server’s IP to a private IP address, or blocking port 80 with the host-based firewall would not harden the server or could affect its functionality as a web server. Reference: https://www.cisco.com/c/en/us/support/docs/ip/access-lists/13608-21.html

A risk assessment is a process of identifying, analyzing, and evaluating the potential threats and vulnerabilities that may affect an organization’s assets, operations, or objectives. A risk assessment matrix is a tool that can help prioritize the risks based on their likelihood and impact1.

The CVSS (Common Vulnerability Scoring System) is a standard framework for rating the severity of vulnerabilities in software systems. The CVSS provides a numerical score from 0 to 10, as well as a qualitative rating from Low to Critical, based on the characteristics and consequences of the vulnerability2.

However, the CVSS score alone may not be sufficient to determine the priority of mitigation and remediation actions for each vulnerability. Other factors that may influence the decision include:

Patch availability: This metric indicates whether there is a fix or update available for the vulnerability from the vendor or developer. Patch availability can affect the urgency and feasibility of remediation, as well as the risk exposure and potential damage of exploitation. For example, a vulnerability with a high CVSS score but with a readily available patch may be less critical than a vulnerability with a lower CVSS score but with no patch available3.

Mission criticality: This metric reflects the importance and value of the asset or system affected by the vulnerability to the organization’s mission, goals, or functions. Mission criticality can affect the impact and priority of remediation, as well as the risk tolerance and acceptance level of the organization. For example, a vulnerability with a high CVSS score but affecting a non-essential system may be less critical than a vulnerability with a lower CVSS score but affecting a core system4.

OS type: This metric indicates the operating system (OS) of the asset or system affected by the vulnerability. OS type can affect the likelihood and complexity of exploitation, as well as the availability and compatibility of patches or mitigations. For example, a vulnerability with a high CVSS score but affecting an uncommon or unsupported OS may be less critical than a vulnerability with a lower CVSS score but affecting a widely used or supported OS3.

OS or application versions: This metric indicates the specific version of the OS or application affected by the vulnerability. OS or application versions can affect the applicability and relevance of the vulnerability, as well as the availability and compatibility of patches or mitigations. For example, a vulnerability with a high CVSS score but affecting an outdated or obsolete version may be less critical than a vulnerability with a lower CVSS score but affecting a current or popular version3.

System architecture: This metric indicates the design and configuration of the asset or system affected by the vulnerability. System architecture can affect the exposure and accessibility of the vulnerability, as well as the effectiveness and efficiency of patches or mitigations. For example, a vulnerability with a high CVSS score but affecting an isolated or segmented system may be less critical than a vulnerability with a lower CVSS score but affecting an interconnected or integrated system3.

Therefore, to best enable the organization to prioritize its efforts based on impact, patch availability is one of the most important metrics to consider in addition to the CVSS score for each CVE (Common Vulnerabilities and Exposures). Patch availability can directly influence the risk level and remediation strategy for each vulnerability.

Wireshark is a tool that can capture and analyze network traffic, including Session Initiation Protocol (SIP) and Voice over IP (VoIP) packets. The security analyst can use Wireshark to extract the audio data from the VoIP call that originated from the suspicious IP address and provide it to law enforcement. iptables, tcpdump, and Netflow are other tools that can manipulate or monitor network traffic, but they cannot extract audio data from VoIP packets. Reference: https://www.wireshark.org/docs/wsug_html_chunked/ChVoIPAnalysis.html

Encapsulated traffic may evade security monitoring and defenses by hiding or obfuscating the actual content or source of the traffic. Encapsulation is a technique that wraps data packets with additional headers or protocols to enable communication across different network types or layers. Encapsulation can be used for legitimate purposes, such as tunneling, VPNs, or NAT, but it can also be used by attackers to bypass security controls or detection mechanisms that are not able to inspect or analyze the encapsulated traffic .

According to the CompTIA CySA+ (CS0-002) best practices, the most useful information data points to provide to the security manager for communicating the risk factors to senior management are the impact and adversary capability. The impact refers to the potential consequences of a successful attack or exploitation of a vulnerability, such as data loss or system compromise. The adversary capability refers to the ability of an attacker to exploit a vulnerability, including their technical expertise and resources. Together, these data points help to provide a complete picture of the risk associated with a vulnerability, and allow senior management to make informed decisions regarding risk mitigation and remediation. The other data points, such as probability, attack vector, classification, and indicators of compromise, can also be valuable, but the impact and adversary capability are considered the most critical for prioritizing risk mitigation efforts.

A risk-based cybersecurity framework is a set of guidelines and best practices that helps an organization identify, assess, prioritize, and mitigate cyber risks. By using a risk-based approach, an organization can allocate its resources more efficiently and effectively to address the most critical and likely cyber risks. A risk-based approach does not always require quantifying each cyber risk, nor is it driven by regulatory compliance or prioritizes vulnerability remediation by threat hunting. Reference: https://www.nist.gov/cyberframework/risk-management