Internet of Things (IoT) systems have gained huge popularity in the past decade. This technology is developing as a back boon from the day-to-day utility in smart homes to intelligent power grids. It has become ubiquitous in the past decade while gaining popularity in academia and industry. As the devices used are usually sensors without a well-developed user interface, they are vulnerable to various threats. In this survey article, we have undergone some of the security challenges the technology faces and how the recently emerging technologies can provide an escape. Emerging technologies like blockchain, AI, and Deep learning techniques provide a platform where IoT operations are carried out successfully and securely. However, specific challenges need to be dealt with before implementing these in practice. We have briefly reviewed the role of particular technologies in securing IoT devices.