The greatest risk associated with inappropriate classification of data is users having unauthorized access to sensitive information. Proper data classification ensures that access controls are applied appropriately, protecting sensitive data from unauthorized access.

Importance of Data Classification

Data classification involves categorizing data based on its level of sensitivity and the impact that unauthorized access, disclosure, modification, or destruction would have on the organization.

It ensures that appropriate security measures are applied according to the data's classification.

Risks of Inappropriate Classification

Unauthorized Access: If data is not classified correctly, sensitive information may not receive the necessary protections, leading to unauthorized access.

Lack of Accountability: Misclassification can result in unclear responsibilities for data protection, but the primary concern remains unauthorized access.

Inaccurate Recovery Time Objectives (RTOs): While important, this is secondary to the risk of unauthorized access.

Inaccurate Record Management Data: This can affect operational efficiency but is not as critical as unauthorized access.

Implementing Effective Classification

Organizations must have a clear data classification policy and ensure it is followed consistently.

Regular audits and reviews should be conducted to verify that data is classified appropriately and that access controls are enforced.

References

CISM Review Manual Full text.html, emphasizing the importance of proper data classification and the risks associated with misclassification, especially unauthorized access to data​​.