The MOST important objective of information security controls is to:

The most important objective of information security controls is to provide measurable risk reduction. Information security controls are the policies, procedures, techniques, or technologies that are implemented to protect the confidentiality, integrity, and availability of information assets. The main purpose of information security controls is to reduce the risk of unauthorized access, use, disclosure,modification, or destruction of information assets, and to ensure that the information assets support the enterprise’s objectives and performance. Information security controls should be measurable, meaning that they should have clear and quantifiable criteria for evaluating their effectiveness and efficiency in reducing the risk exposure to an acceptable level. References = Risk and Information Systems Control Study Manual, 7th Edition, Chapter 3, Section 3.1.1, page 1151