The 7th International Conference on Computer Communication and Network Security (CCNS 2026) will be held in Huaihua, China, from October 16 to 18, 2026. The conference aims to provide a high-level platform for researchers, scholars, engineers, and industry professionals worldwide to exchange ideas, present the latest research findings, and deliberate on key challenges and future directions in the field. CCNS 2026 covers a broad range of topics, including but not limited to artificial intelligence and machine learning, security challenges in edge computing, quantum communication networks, optical fiber sensor networks for security applications, and nano-photonic devices in cybersecurity. The conference seeks to foster academic exchange, technological innovation, and interdisciplinary collaboration across these cutting-edge fields.