/ireless in the enterprise Figure 3 Level of mobility and access quality in wireless networks Level of mobility Cellular/PCS G Networks Wireless LANs Broadband wireless LANs ccess Quali Personal Area Networks Fixed Wireless Networks 7 curity We believe that security remains one of the biggest challenges in wireless enterprise Many incidents(such as 250,000 devices left in airports, most of which carried sensitive corporate data without even password protection), perceived and real wireless infrastructure attacks and the lack of strong security in wireless technologies could adversely affect the wireless enterprise. The wireless infrastructure must provide centralised control over critical security function that includes user authentication, data encryption, anti-virus administration, software version control, data synching, automatic backups and emergency data lock-downs Security levels vary significantly among wireless networks. As shown in Figure 4 some wireless networks with an increased support for security have lower bandwidth We believe that the emerging broadband wireless networks will excel in both in increasing bandwidth and higher security Figure 4 Security and bandwidth in wireless networks Broadband wireless LANs Wireless LANs 3G Networks Security Cellular/PCS Sy emsWireless in the enterprise 359 Figure 3 Level of mobility and access quality in wireless networks 2.3 Security We believe that security remains one of the biggest challenges in wireless enterprise. Many incidents (such as 250,000 devices left in airports, most of which carried sensitive corporate data without even password protection), perceived and real wireless infrastructure attacks and the lack of strong security in wireless technologies could adversely affect the wireless enterprise. The wireless infrastructure must provide centralised control over critical security function that includes user authentication, data encryption, anti-virus administration, software version control, data synching, automatic backups and emergency data lock-downs. Security levels vary significantly among wireless networks. As shown in Figure 4, some wireless networks with an increased support for security have lower bandwidth. We believe that the emerging broadband wireless networks will excel in both in increasing bandwidth and higher security. Figure 4 Security and bandwidth in wireless networks