Charles Nepote developed a security enhancement for the openfoodfacts-infrastructure repository by implementing Fail2ban-based brute-force protection for the Proxmox UI. He configured a custom authentication failure filter and a jail to automatically ban IP addresses after repeated failed login attempts, thereby reducing the risk of unauthorized access. This work involved shell scripting and system administration, leveraging Fail2ban’s capabilities to strengthen access controls across infrastructure services. The solution addressed a specific vulnerability in the authentication process, improving the project’s security posture. Over the course of the month, Charles focused on this targeted feature, demonstrating depth in security configuration and infrastructure management.