Worked on the spring-projects/spring-security repository to enhance authentication failure debugging and context propagation. Developed and delivered the Authentication Failure Context Enrichment feature, which introduced an authRequest field to the AuthenticationException class. This addition enables the capture of detailed information about failed authentication attempts, supporting faster triage and improved security auditing. The work focused on exception handling and context propagation within Java and Spring Security, allowing for richer debugging data when authentication failures occur. By enriching exception data, the changes improved troubleshooting efficiency and provided more actionable insights for security teams, reflecting a focused and technically sound engineering contribution.