Artificial Intelligence of Things (AIoT) combines the power of artificial intelligence, computing power, and IoT infrastructure. With AIoT, artificial intelligence (AI) is embedded in computing devices, all connected to one or more IoT networks. The mutual benefit of these two technologies allows for a different vision and a broader scope of action. It will enable the analysis of Big Data, make decisions and act on data without human intervention. Although there have been gradual advancements in IoT Security, most connected machines and devices have been built with security in mind as a second thought, where the basic minimum standards are “good enough.” However, given the increasing importance of data security in today's world, providing additional layers of security at the network and device level is paramount, especially for critical applications such as government, defense, and healthcare. This paper will provide the current and future security techniques to countermeasure the cybersecurity threats facing the IoT and AIoT.