During a routine audit, you discover that an employee has been accessing sensitive financial data unrelated to their job function for several months. The activity was flagged by a security information and event management (SIEM) system, but no action was taken. Which process failure is most likely responsible, and how should it be addressed? A. Inadequate user training; implement mandatory security awareness programs. B. Poor SIEM configuration; refine alert thresholds and automate escalations. C. Insufficient monitoring coverage; deploy enhanced data loss prevention (DLP) tools. D. Lack of incident response procedures; create a clear escalation matrix for alerts.