Accidents are one of the major causes of death in Saudi Arabia. The accident detection and monitoring system utilizes evolving technologies to limit the fatal consequences caused by simply not rescuing the victim fast enough. This research studies accident detection and monitoring systems in-depth and proposes a security model to further enhance such systems. The paper is mainly divided into four sections; beginning with introducing the system, followed by a risk assessment, the design of a secure model, and lastly a security analysis of the proposed model. The introduction identifies the purpose of choosing the system and what would be investigated in later sections. While the risk assessment identifies assets, vulnerabilities, malicious actors, and threats associated with the system and then implements the relevant prioritizations of assets and vulnerabilities. Following that, secure design analysis of the system discusses the architecture, its evolution, applied security, external systems, and the proposed security model. Finally, in the security analysis section, three subdomains were thoroughly examined: the gyroscope sensor, GPS module, and GSM module, and a security concerns checklist was supplied to aid and serve for future research and improvements.