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| Section | Objectives |
|---|---|
| Topic 1: Industrial Cybersecurity Risk and Vulnerability Management | - Threat modeling in OT environments
|
| Topic 2: Industrial Security Architecture and Defense | - Defensive architectures
|
| Topic 3: Incident Response and Operational Security | - Operational continuity and safety
|
| Topic 4: Industrial Control Systems Security Fundamentals | - Industrial protocols and communications
|
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NEW QUESTION # 91
How can logging be utilized to enhance endpoint protection in an ICS environment?
Response:
Answer: C
NEW QUESTION # 92
How could Wireshark be utilized in an attack against devices at Purdue levels 0 or 1?
Answer: A
Explanation:
Wireshark is a network protocol analyzer primarily used to capture and analyze network traffic. At Purdue levels 0 or 1 (which include physical devices like sensors, actuators, and controllers communicating over industrial protocols), Wireshark can be used to:
Capture serial and fieldbus communications (A), such as Modbus, Profibus, or Ethernet-based protocols, if the network media is accessible. This can reveal sensitive operational data and control commands.
Wireshark cannot capture communications between chips on a board (B) because this is hardware-level, not network traffic.
Detecting open ports by sending packets (C) is a function of port scanning tools, not Wireshark.
Detecting asymmetrical keys or brute forcing crypto keys (D and E) are not capabilities of Wireshark.
The GICSP training highlights the risk of passive monitoring via tools like Wireshark as a means for attackers to gain insight into control system operations.
Reference:
GICSP Official Study Guide, Domain: ICS Security Operations & Incident Response NIST SP 800-82 Rev 2, Section 7.5 (Monitoring and Analysis Tools) GICSP Training on Network Traffic Analysis and ICS Attack Vectors
NEW QUESTION # 93
Which of the following is a best practice when creating enforceable ICS security policies?
Response:
Answer: D
NEW QUESTION # 94
An organization has their ICS operations and networking equipment installed in the Purdue model level 3.
Where should the SIEM for this equipment be placed in relation to the existing Level 3 devices?
Answer: B
Explanation:
According to the Purdue model and best practices outlined in GICSP, Level 4 corresponds to the enterprise or business network, often containing management and security monitoring infrastructure such as Security Information and Event Management (SIEM) systems.
Placing the SIEM on a management subnet in Level 4 (B) keeps monitoring tools separated from the operational control network (Level 3), reducing the risk that a compromised Level 3 device could affect the security infrastructure itself. It also allows the SIEM to collect logs from multiple network segments securely and apply enterprise-wide analysis.
This segregation supports defense-in-depth and aligns with GICSP's emphasis on secure network segmentation and monitoring.
Reference:
GICSP Official Study Guide, Domain: ICS Security Architecture & Design
NIST SP 800-82 Rev 2, Section 5.5 (Network Architecture)
GICSP Training Materials on Network Segmentation and SIEM Deployment
NEW QUESTION # 95
What mechanism could help defeat an attacker's attempt to hide evidence of his/her actions on the target system?
Answer: A
Explanation:
An attacker often tries to cover their tracks by deleting or modifying logs on the compromised system to hide evidence of their activities.
Centralized logging (D) forwards log data in real-time or near real-time to a secure, remote logging server that the attacker cannot easily alter or delete. This makes it much more difficult for attackers to erase their footprints because even if local logs are tampered with, copies remain intact elsewhere.
Attack surface analysis (A) is a proactive security activity to identify vulnerabilities, not a forensic or logging mechanism.
Application allow lists (B) control what software can execute but do not directly preserve evidence of actions taken.
Sandboxing (C) isolates processes for security testing but is unrelated to preserving evidence.
The GICSP materials emphasize centralized logging and secure log management as critical controls for incident detection and forensic analysis within ICS environments.
Reference:
GICSP Official Study Guide, Domain: ICS Security Operations & Incident Response NIST SP 800-92 (Guide to Computer Security Log Management) GICSP Training on Incident Response and Logging Best Practices
NEW QUESTION # 96
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