[Purpose/Significance] This study aims to reveal the deep-seated differences in knowledge production and theoretical perspectives between Chinese and Western communication studies amidst the "socio-cultural turn" of information security research. By transcending the "Western-centric" limitations of existing literature, it provides an empirical basis for understanding academic discourse divergence and fostering cross-cultural dialogue in global digital governance. [Method/Process] Focusing on core literature from the Web of Science (WoS) Communication category and China National Knowledge Infrastructure (CNKI) between 2009 and 2024, this study employed CiteSpace 6.2.R7 to generate scientific knowledge maps. Through keyword co-occurrence, cluster analysis, and burst detection, it systematically compared the research hotspots, evolutionary paths, and core frameworks of the two academic communities. [Result/Conclusion] The results indicate a characteristic of "surface convergence in topics but deep divergence in frameworks." While both sides share great concerns over "privacy protection" and "social media," Western research exhibits a distinct "event-driven" pattern (e.g., the Snowden revelation), focusing on a critical perspective of "surveillance and rights" that emphasizes the checks of individual liberty against public power and capital. Conversely, Chinese research shows a significant "policy-driven" pattern (e.g., the Cybersecurity Law), focusing on a constructive perspective of "governance and development" that emphasizes the integration of national security, data sovereignty, and social order. The study concludes that information security research depicts a landscape of "Global Issues, Local Frameworks," reflecting how specific political systems and social contexts profoundly shape academic discourses.