During February 2025, Chilcano focused on security hardening and CI/CD reliability for the zama-ai/concrete-ml and zama-ai/concrete repositories. He updated Dockerfiles to enforce non-root execution, standardized base images, and addressed vulnerabilities identified by Trivy, using Dockerfile and Shell scripting. In concrete-ml, these changes reduced the attack surface and improved deployment security. For concrete, he enhanced CI/CD pipelines by tuning privilege levels and configuring Trivy to ignore non-critical HEALTHCHECK checks, which improved build stability. Chilcano’s work demonstrated depth in DevOps and Linux, aligning security practices across both repositories to enable faster, more secure, and reliable software releases.