unattended. Once the network layer is compromised,
it is very easy for a hacker to gain control and
maliciously use a device as well as attack other
devices nearby through the original compromised
node. In particular, appliances that maintain an online
presence are easy to attack. These devices that do not
have any virus protection or malware protection are
highly susceptible to being used as “bots” to forward
malicious code to infect other devices [18]. The
International Data Corporation predicts that more than
200 million devices will be connected to the Internet
by the year 2020, with a good amount of these being
appliances; there will be a large opportunity for
hackers to use these devices to their advantage
through “denial of service” attacks, malicious email,
and other harmful worms or Trojans. A recent HP
study reveals that 70% of Internet of Things devices
are vulnerable to attacks [33].