Recently, as integration of semiconductor technology is developing, single chip of high performance can
be implemented. Also, conventional wire and wireless is integrated and called internet of things(IoT). IoT
system is connected with a variety of devices and heterogeneous network. Integration of IoT communication
made an changes on various aspects of life. But it induced security and vulnerability issues because it has
limited resources such as small memory capacity, low power supply and low computing power. It is
impossible to implement conventional security algorithm with embedded engine on hardware. We can't
realize conventional standard algorithm due to these kinds of reasons. It induced security problem such as
attack, hacking and vulnerability. New concept of ultra-weight algorithm is required. Quality of service
(QoS) issues is addressed and proposed crucial factors in this paper We proposed countermeasure to protec
and solve vulnerability of IoT device.