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Which of the following is a reason environmental variables are a concern when reviewing potential system vulnerabilities?
Correct Answer: A
Environmental variables store configuration settings, paths, and other system-related information that applications and processes use. If an attacker gains access to these variables, they could manipulate them to alter application behavior, gain unauthorized access, or escalate privileges. For example, an attacker could modify the PATH variable to execute malicious programs instead of legitimate ones. This can significantly increase the scope and impact of an exploited vulnerability, making it a major security concern. Reference: CompTIA Security+ SY0-701 Official Study Guide, Security Architecture domain.