Which is the BEST deployment system for malicious code protection? Available Choices (select all choices that are correct)
Correct Answer: C
Application whitelisting (AWL) is a technique that allows only authorized applications to run on a system, and blocks any unauthorized or malicious code from executing. AWL is one of the most effective methods for preventing malware infections and reducing the attack surface of a system. AWL can be implemented at different levels, such as the operating system, the network, or the application itself. AWL is especially useful for industrial automation and control systems (IACS), which often run on legacy or proprietary platforms that are not compatible with traditional antivirus software or other security solutions. AWL can also help protect IACS from zero-day attacks, which exploit unknown vulnerabilities that have not been patched or detected by security vendors. AWL is recommended by the ISA/IEC 62443 standards as a key component of malicious code protection for IACS. According to the standards, AWL should be applied to all IACS components that support it, and should be configured and maintained according to the security policies and procedures of the organization. AWL should also be complemented by other security measures, such as network segmentation, zones and conduits, and patch management, to provide a defense-in-depth approach to IACS security. References: ISA/IEC 62443-3-3:2013, System security requirements and security levels, Section 5.2.3.41 ISA/IEC 62443-2-1:2010, Establishing an industrial automation and control systems security program, Section 4.3.3.6.42 ISA/IEC 62443-4-2:2019, Technical security requirements for IACS components, Section 4.2.3.43 ISA/IEC 62443-3-2:2020, Security risk assessment for system design, Section 7.3.3.44 ISA/IEC 62443-4-1:2018, Product development requirements, Section 5.2.3.45
Question 12
What is the FIRST step required in implementing ISO 27001? Available Choices (select all choices that are correct)
Correct Answer: D
The first step in implementing ISO 27001, an international standard for information security management systems (ISMS), is to perform a security risk assessment. This initial step is critical as it helps identify the organization's information assets that could be at risk, assess the vulnerabilities and threats to these assets, and evaluate their potential impacts. This risk assessment forms the foundation for defining appropriate security controls and measures tailored to the organization's specific needs. Starting with a risk assessment ensures that the security controls implemented are aligned with the actual risks the organization faces, making the ISMS more effective and targeted. ISA/IEC 62443 Cybersecurity Fundamentals References: Although ISO 27001 is not part of ISA/IEC 62443, it shares common principles in cybersecurity management by starting with a comprehensive understanding and assessment of security risks, which is a fundamental aspect in both standards for setting up effective security practices.
Question 13
Which is the implementation of PROFIBUS over Ethernet for non-safety-related communications? Available Choices (select all choices that are correct)
Correct Answer: C
PROFINET is the implementation of PROFIBUS over Ethernet for non-safety-related communications. It is a standard for industrial Ethernet that enables real-time data exchange between automation devices, controllers, and higher-level systems. PROFINET uses standard Ethernet hardware and software, but adds a thin software layer that allows deterministic and fast communication. PROFINET supports different communication profiles for different applications, such as motion control, process automation, and functional safety. PROFINET is compatible with PROFIBUS, and allows seamless integration of existing PROFIBUS devices and networks123 References: 1: What is PROFINET? - PI North America 2: PROFINET - Wikipedia 3: PROFINET Technology and Application - System Description
Question 14
What is the primary focus of Part 3-2 in the ISA/IEC 62443 series?
Correct Answer: B
ISA/IEC 62443-3-2 focuses on the cybersecurity risk assessment process, including: Identifying zones and conduits Determining the Target Security Levels (SL-T) Designing the IACS architecture based on risk-based zoning "Part 3-2 defines a process for conducting cybersecurity risk assessments and designing system architectures that incorporate zones and conduits based on those risks." - ISA/IEC 62443-3-2:2020, Clause 5 - Risk Assessment Process This part bridges the gap between risk evaluation and technical implementation. References: ISA/IEC 62443-3-2:2020 - Clauses 5.2 to 5.5 ISA/IEC 62443-1-1 - Framework overview
Question 15
Which of the following is a trend that has caused a significant percentage of security vulnerabilities? Available Choices (select all choices that are correct)
