CompTIA Security+ (SY0-701) — Question 291

Which of the following is the most important security concern when using legacy systems to provide production service?

Answer options

• A. Instability
• B. Lack of vendor support
• C. Loss of availability
• D. Use of insecure protocols

Correct answer: B

Explanation

The correct answer is B, as legacy systems often lack vendor support, making it difficult to receive security updates or patches. While instability, loss of availability, and insecure protocols are concerns, the absence of support directly impacts the system's security posture over time.