Worked on the porter-charts repository to enhance deployment security and CI reliability by implementing image digest pinning across multiple services, including Grafana, Redis, Datadog, Tailscale-Operator, and LogDNA. Used Bash scripting and YAML configuration to enforce SHA256 digests, preventing silent tag mutations and mitigating supply chain risks. Improved the LogDNA daemonset template with SHA field support and introduced helm-template assertions within CI pipelines to verify digest rendering for five addons. Addressed CI stability by refining shell scripts to handle large helm outputs more reliably. These efforts resulted in more predictable releases and streamlined future digest management across the portfolio.