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Embedded system devices are particularly significant in today's world because they contain critical computer data and other digital information. There are a lot of current electrical devices that we don't think about. This phrase means a new kind of computer that gives an infrastructure some computing power. Most of the time, these systems don't have enough processing power, memory, or electricity to use current cybersecurity solutions. Cyber-attacks like virus injections, unlawful access, and denial-of-service are easier to get into linked devices since more and more embedded devices are connected to the internet and networks. These risks can threaten both the safety of the data and the safety of the people, which highlights how crucial it is to have lightweight and automated cyber-security solutions that work in situations with less resources. The paper also looks at how to use lowcomplexity intrusion detection and automated response systems in embedded architectures. The suggested solutions are not the same as the usual intrusion detection systems that are built for commercial ranges or high-performance servers. Instead, they are working on solutions that let them monitor things in real time and respond quickly while using less energy. Using lightweight statistical models to discover abnormalities, signature-based filtering for environments with limited memory, and rule-based behavior control for a given type of embedded device are some of the most essential ways. These technologies use less computer power and also locate moving hazards with a high level of precision. The report also talks about how crucial automatic response systems are for finding intrusions. Some reaction methods that can help cope with threats without putting too much burden on resources are selective task isolation, adaptive throttling of suspicious network traffic, and dynamic reconfiguration of communication routes. By automating these reactions, we don't need as many people to be involved, and we can be sure, that secured embedded systems will stay running even when they are attacked. This research looks at ways to identify and respond to intrusions and suggests a hierarchical cybersecurity model that is specifically made for embedded systems. The framework is made to be scalable, versatile, and low-overhead, which makes it helpful for things like transportation, healthcare, and important infrastructure.