During June 2025, Andrzej Religa focused on enhancing security and reliability for the percona/percona-server repository by addressing a critical bug related to password exposure in debug logs. He updated the log_filter.cc regular expression to ensure that bootstrap-created user passwords for the caching_sha2_password plugin were properly masked, preventing sensitive data from appearing during verbose logging. Andrzej reinforced this fix by developing regression tests in C++ to verify that passwords consistently appear as masked entries in logs. His work demonstrated strong skills in bug fixing, regular expressions, and testing, resulting in improved security posture and greater customer trust for the project.