According to IDC, the Western European security appliance market will reach over $1.4 bln in 2009, up from around $625 mln in 2004, growing at a compound annual growth rate (CAGR) of 18%. Of the three security appliance categories – firewall/VPN, intrusion detection and prevention (ID&P), and unified threat management (UTM) – UTM will exhibit the strongest growth, growing at a CAGR of 61% between 2004 and 2009.