Mobile Computing

N

o book on mobile computing can be considered complete without a discussion on security.

Since mobile computing systems are based on wireless networks and wireless communication

technologies, the security of such systems is a major concern. We have already mentioned ear-

lier that larger security challenges are present in wireless networks than in conventional wired net-

works. Security becomes mandatory in mobile systems due to the existence of hackers, viruses,

intruders and Internet-based attackers, who have easy access to such systems through the broadcast

nature of wireless channels. Much of the security problem in wireless networks can be traced to the

base stations or access points (APs), which operate without any security at all and can be ...