ISA/IEC 62443 Cybersecurity Fundamentals Specialist — Question 24

Which of the following is a trend that has caused a significant percentage of security vulnerabilities?

Answer options

• A. IACS developing into a network of air-gapped systems
• B. IACS evolving into a number of closed proprietary systems
• C. IACS using equipment designed for measurement and control
• D. IACS becoming integrated with business and enterprise systems

Correct answer: D

Explanation

The correct answer is D because integrating IACS with business and enterprise systems exposes critical infrastructure to broader attack surfaces and vulnerabilities. Options A, B, and C describe scenarios that may limit exposure, rather than increase it, making them less relevant to the issue of rising security vulnerabilities.