During June 2025, Daniel Tolaba focused on security hardening for the DanielTolaba-Umss/Plataforma-Python repository by addressing environment configuration risks. He delivered a targeted bug fix that removed sensitive API credentials and configuration details from the .env file, including API keys, URLs, and operational parameters, to prevent accidental exposure and support future secret rotation. Daniel applied configuration management best practices and demonstrated proficiency in environment hygiene, ensuring safer deployment and improved compliance readiness. His work, primarily involving Python and environment variable management, enhanced the project’s security posture and operational resilience, though the scope was limited to a single, high-impact infrastructure update.