The rapid advancement of digital technology and social media has fundamentally reshaped public communication patterns. However, the ease of disseminating information is frequently accompanied by a rise in hoaxes, hate speech, slander, and cyberbullying. Within this context, the Islamic concept of hifz al-lisan (guarding the tongue) serves as a crucial ethical framework that warrants critical examination in the digital sphere. This study aims to analyze the concept of hifz al-lisan through a living hadith perspective and investigate its relevance to constructing communication ethics in the digital era. Employing a qualitative approach, this library research synthesizes data from the Qur'an, prophetic traditions (hadith), classical Islamic texts, and contemporary scholarly literature on digital communication ethics. The gathered data were evaluated using content analysis. The findings reveal that hifz al-lisan extends beyond the values of speaking truthfully, avoiding harmful speech, preserving human dignity, and exercising prudence in information sharing; it can also be formulated as a comprehensive ethical framework to counter hoaxes, hate speech, and cyberbullying. The novelty of this research lies in its integration of the living hadith approach with contemporary digital phenomena, thereby offering a contextual and applicable model for Islamic communication ethics. Practically, these findings contribute to strengthening digital literacy, character education, and fostering a digital culture characterized by courtesy, responsibility, and moral integrity on social media.