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| Section | Objectives |
|---|---|
| Topic 1: Addressing Risk with Implementation Measures | - Zones and conduits model - Access control principles - Defense-in-depth strategy - Industrial network architecture and segmentation |
| Topic 2: Validating or Verifying the Security of Systems | - Security validation and verification techniques - Auditing and compliance - Continuous improvement of security measures |
| Topic 3: Monitoring and Improving the CSMS | - Continuous monitoring of IACS cybersecurity - Incident detection and response - Security lifecycle management |
| Topic 4: How Cyberattacks Happen | - Cyber threats and attack vectors - Case studies of industrial cyber incidents - Vulnerabilities in industrial systems |
| Topic 5: Addressing Risk with Selected Security Counter Measures | - Firewalls and network security devices - Patch management - Anti-virus and endpoint protection - Virtual Private Networks (VPNs) |
| Topic 6: Risk Analysis | - Cybersecurity risk assessment concepts - Risk and vulnerability analysis techniques - Risk management fundamentals |
| Topic 7: Creating A Security Program | - Defining information security policy - Security management organization - Developing a long-term security program |
| Topic 8: Understanding the Current Industrial Security Environment | - Security challenges in OT environments - Convergence of IT and OT - Current state of industrial control systems security |
| Topic 9: Addressing Risk with Security Policy, Organization, and Awareness | - Security policies and procedures - Organizational security roles and responsibilities - Security awareness and training |
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NEW QUESTION # 164
In terms of availability requirements, how do IACS and IT differ?
Answer: B
Explanation:
The ISA/IEC 62443 standards explain that continuous operation is often required in IT systems (such as data centers and online services), but for IACS environments, scheduled operation (for example, planned maintenance windows) is typically sufficient. IACS systems may accept limited downtime for maintenance, but require high availability during production runs.
Reference: ISA/IEC 62443-1-1:2007, Section 4.4.4 ("Availability in IACS and IT contexts"); Table 7 (Comparison of IT and IACS requirements).
NEW QUESTION # 165
What is a commonly used protocol for managing secure data transmission over a Virtual Private Network (VPN)?
Available Choices (select all choices that are correct)
Answer: A
Explanation:
IPSec is a commonly used protocol for managing secure data transmission over a VPN. IPSec stands for Internet Protocol Security and it is a set of standards that define how to encrypt and authenticate data packets that travel between two or more devices over an IP network. IPSec can operate in two modes: transport mode and tunnel mode. In transport mode, IPSec only encrypts the payload of the IP packet, leaving the header intact. In tunnel mode, IPSec encrypts the entire IP packet and encapsulates it in a new IP header. Tunnel mode is more secure and more suitable for VPNs, as it can protect the original source and destination addresses of the IP packet from eavesdropping or spoofing. IPSec uses two main protocols to provide security services: Authentication Header (AH) and Encapsulating Security Payload (ESP). AH provides data integrity and source authentication, but not confidentiality. ESP provides data integrity, source authentication, and confidentiality. IPSec also uses two protocols to establish and manage security associations (SAs), which are the parameters and keys used for encryption and authentication: Internet Key Exchange (IKE) and Internet Security Association and Key Management Protocol (ISAKMP). IKE is a protocol that negotiates and exchanges cryptographic keys between two devices. ISAKMP is a protocol that defines the format and structure of the messages used for key exchange and SA management.
References:
ISA/IEC 62443-3-3:2018, Section 4.2.3.7.1, VPN1
ISA/IEC 62443-4-2:2019, Section 4.2.3.7.1, VPN
ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 5.3.2, VPN ISA/IEC 62443 Cybersecurity Fundamentals Specialist Exam Specification, Section 5.3.2, VPN
NEW QUESTION # 166
Which is the implementation of PROFIBUS over Ethernet for non-safetv-related communications?
Available Choices (select all choices that are correct)
Answer: C
NEW QUESTION # 167
Why is OPC Classic considered firewall unfriendly?
Available Choices (select all choices that are correct)
Answer: D
Explanation:
OPC Classic uses DCOM, which dynamically assigns any port between 1024 and 65535. Comprehensive Explanation: OPC Classic is a software interface technology that uses the Distributed Component Object Model (DCOM) protocol to facilitate the transfer of data between different industrial control systems. DCOM is a Microsoft technology that allows applications to communicate across a network. However, DCOM is not designed with security in mind, and it poses several challenges for firewall configuration. One of the main challenges is that DCOM does not use fixed TCP port numbers, but rather negotiates new port numbers within the first open connection. This means that intermediary firewalls can only be used with wide-open rules, leaving a large range of ports open for potential attacks. This makes OPC Classic very "firewall unfriendly" and reduces the security and protection they provide. References:
* Tofino Security OPC Foundation White Paper
* Step 2 (for client or server): Configuring firewall settings - GE
* Secure firewall for OPC Classic - Design World
NEW QUESTION # 168
Which is a reason for
and physical security regulations meeting a mixed resistance?
Available Choices (select all choices that are correct)
Answer: A
Explanation:
Cybersecurity and physical security regulations are intended to provide guidance and requirements for protecting industrial control systems from various threats and risks. However, these regulations may face mixed resistance from different stakeholders for various reasons. One of the reasons is that there are a limited number of enforced cybersecurity and physical security regulations, especially at the international level. This means that some regions or countries may have more stringent or comprehensiveregulations than others, creating inconsistencies and challenges for cross-border cooperation and compliance. Moreover, some regulations may be outdated or not aligned with the current best practices and standards, such as ISA/IEC
62443, which may limit their effectiveness and applicability. Therefore, some organizations may prefer to follow voluntary standards or frameworks, such as ISA/IEC 62443, rather than mandatory regulations, as they may offer more flexibility and adaptability to the specific needs and contexts of each industrial control system. References:
* ISA/IEC 62443 Standards to Secure Your Industrial Control System, page 3
* Using the ISA/IEC 62443 Standard to Secure Your Control System, page 9
NEW QUESTION # 169
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