Today we are witnessing a new concept that is growing fast: The Internet of Things (IoT). We can see all the devices we use in any field, are transformed into a smarter version such as smart homes, smart beds, smart coffee machines and smart everything. According to the American Research Firm Gartner there will be nearly 50 billion connected devices in 2020. However, the security aspect is still at the top of the prioritized tasks in this concept.
In this paper we present a review about some categories of popular security issues in the IoT and the solutions proposed by other researchers to these issues. In addition, we investigated security attacks in smart homes and identified some possible security solutions in those environments.