Cristian Ayala expanded the cybersecurity knowledge base for Industry 4.0 within the rominagiselleayalamartinez-coder/Obsidian_prueba repository by delivering a comprehensive update to the Markdown documentation. He researched and synthesized information on leading authors, books, and scientific articles, integrating ISO 27001 standards and analyzing the evolution of industrial cybersecurity topics. His technical writing and documentation skills ensured clarity and depth, supporting both onboarding and audit readiness. By updating the README to reflect new team contributors, Cristian improved project transparency and collaboration. The work laid a foundation for future OT/IT cybersecurity integration, demonstrating thorough research and structured documentation using Markdown.