In the realm of digital communication, ensuring the security of file-sharing processes is imperative. Many existing platforms lack robust security measures, exposing sensitive data to potential threats. This study introduces a novel approach to address these vulnerabilities, drawing inspiration from complex network theory. Employing a two-step authentication process, the method first encrypts files using a hybrid model combining AES and ECC for enhanced protection. Subsequently, community detection algorithms are utilized to segment corporate domains, enabling fine-grained access control. This ensures that only authorized recipients within specific communities can access the files. Comparative analysis of encryption modalities, including RSA, a hybrid AES and ECC model, and Camellia, reveals the superior performance of the hybrid approach in terms of processing time and benchmark scores. By combining security and efficiency, this research lays the groundwork for a more secure and reliable file-sharing environment, promoting trust and safeguarding data privacy in the digital era.