This study examines the phenomenon of concealment in security reporting in South-East Nigeria, focusing on how both state and non-state actors manipulate language, framing, and selective disclosure in media and official reports. Employing a qualitative research design, the study analyzed 50 purposively sampled security reports, news articles, and official statements published between 2014 and 2024, using qualitative content analysis and critical discourse analysis (CDA) guided by Discoursive Framing Theory. Textual analysis of reports, including Punch and PREMIUM TIMES coverage of violent incidents, reveals that linguistic strategies, such as omission of casualty figures, ambiguous labeling of actors, and selective emphasis shape public perception, often balancing the need for operational secrecy with moral and political accountability. Empirical findings indicate that concealment occurs across all forms of insecurity, from separatist activities and militia attacks to highway abductions, with both security agencies and vigilante groups implicated in selective reporting and extrajudicial practices. Comparative review of prior studies shows that concealment is a recurring strategy employed for operational, political, and strategic purposes, affecting public trust and policy effectiveness. The study concludes that concealment in security reporting is a complex, multi-layered practice that influences public understanding and highlights institutional limitations. Recommendations include enhancing transparency and accountability in reporting and building capacity and collaboration among security actors to improve both information accuracy and public trust.