During December 2025, Kevin Lammrock contributed to the apache/cassandra repository by developing a targeted security and access control testing feature. He implemented a Java-based unit test that verifies users cannot access resources without proper permissions, even after authorization is granted, directly addressing potential authorization lapses. This work enhanced database security by ensuring permission checks are strictly enforced, reducing the risk of unauthorized data access. Kevin collaborated closely with project reviewers to align with CASSANDRA-21051 requirements and followed a robust patch workflow. His efforts expanded test coverage, improved confidence in authorization enforcement, and demonstrated depth in Java and database security practices.