Guillaume Granjus contributed to the projectdiscovery/nuclei-templates repository by addressing a bug that caused false positives during vulnerability scanning. He improved scan accuracy by removing the .env.example file from the generic-env template, ensuring that security teams receive more reliable results and experience less alert noise. This update was implemented through a Git-based template modification, leveraging his skills in configuration management, DevOps, and security. Guillaume used YAML to update the scanning templates, maintaining compatibility with existing detection logic. His work demonstrated careful attention to reducing maintenance overhead while preserving the effectiveness of template-driven vulnerability detection for open-source security workflows.