Abstract—The Internet of Things (IoT) is becoming increasingly popular, and machine-to-machine (M2M) technology is one of its major components. Reducing human interaction and tasks is one of the most important justifications for research in M2M communication. Also, M2M technology decreases network traffic, improving network effectiveness. In contrast, multiple networks are combined into M2M networks, which leads to security-related design concerns. However, a significant barrier to its growth is security. According to statistics, new gadgets may come under attack five minutes after they connect to the Internet. If these issues are resolved, it will be easier for people to trust this worldview. Security issues with possible solutions have gotten little attention despite extensive M2M studies. This article provides a comprehensive security analysis of M2M communication technologies, exploring the risks and solutions to better comprehend M2M communication and its security implications.