A risk practitioner finds that data has been misclassified. Which of the following is the GREATEST concern?

Data misclassification means sensitive information might be labeled as less critical, leading to the application of weaker-than-appropriate security controls. This significantly increases the likelihood that individuals without the proper authorization could gain access to the data, as access controls are typically tied to established data classification levels.

Data corruption refers to data being altered or damaged, which is a different issue than misclassification and not its direct greatest concern.

Inadequate retention schedules relate to how long data is stored, which is a consequence of misclassification but not the immediate greatest security risk.

Data disruption implies a loss of availability, which can be a risk, but misclassification primarily impacts confidentiality and integrity, making unauthorized access the more direct and immediate greatest concern.