Sales of high-end security appliances have surged in the third quarter of 2003, as enterprises install them in their main networks, having seen lower-end devices prove themselves in branch offices, according to the latest figures from analyst firm IDC. Companies are also waking up to the fact that security appliances can be much easier to manage than software. Some 20 percent of these appliances cost more than $25,000, compared with just 10 percent in the second quarter, according to IDC’s figures. Full Story