This study examines the challenges to social security in post-conflict settings, focusing specifically on the proliferation of rumors and misinformation via Kurdish social media platforms. The pervasive use of social media (driven by its interactivity, accessibility, and rapid information diffusion) has transformed these platforms into potent vectors for the dissemination of falsehoods. Within the framework of fourth-generation warfare, such digital environments have increasingly been exploited as instruments of destabilization, aimed at fomenting unrest and undermining both national and communal security. Employing a descriptive-analytical approach, the research investigates the characteristics, mechanisms, and repercussions of rumor dissemination in online spaces. Findings indicate that social media has evolved from a medium of interpersonal communication into a complex ecosystem facilitating the widespread circulation of misinformation. The study categorizes various types of rumors, emphasizing the diverse motivations and socio-cultural gratifications underlying their propagation, which vary across different societal contexts. The detrimental outcomes include social fragmentation, erosion of public trust, and heightened collective anxiety, fear, and violence. Within Iraq and the Kurdistan Region societies, social media rumors have played a critical role in destabilizing civil peace, exacerbating internal conflicts, undermining confidence in public officials, and intensifying sectarian and ethnic divisions, thereby threatening national cohesion and social stability. The study advocates for the development of a proactive media strategy aimed at educating the public about the hazards of misinformation and its implications for social security. It further recommends that media organizations prioritize accuracy and transparency, foster inclusive public dialogue, and support the establishment of independent bodies dedicated to monitoring and analyzing rumors. Additionally, the enforcement of stringent legal measures against individuals who deliberately spread false information that endangers public security in Iraq and the Kurdistan Region is urged. Ultimately, the research underscores the dual role of social media platforms as a primary information source revitalizing public discourse, while simultaneously serving as a conduit for rumors that jeopardize institutional trust and societal stability in fragile post-conflict contexts.