Internet of Things (IoT) is now in its initial stage but very soon, it is going to influence almost every day-to-day item we use. The more it is included in our lifestyle, the more will be the threat of it being misused. There is an urgent need to make IoT devices secure from getting cracked. Very soon IoT is going to expand the area for cyber-attacks on homes and businesses by transforming objects that were used to be offline into online systems. Existing security technologies are just not enough to deal with this problem