Web hosting company Savvis launched <A HREF="http://news.zdnet.com/2110-1009_22-6000949.html?tag=zdnn.alert">a hosted security service</A> that is designed to offer firewall, intrusion detection prevention and mitigation of denial-of-service attacks within a company's wide area network. The Savvis Security Utility service is managed by Savvis, which provides its customers monitoring capabilities through its Web portal.