SQL Slammer virus entered the Corporate Intranet from the internet onto the Automation Segments/VLANS. This Denial of Service attack produced large enough quantities of traffic to use up resources on routers and switches. SQL sources on the Automation segment were 3 PSs running Bently Series One software and 2 PCs with the newer version of WonderWare that uses MS-SQL server. These 5 PCs represent only a small portion of the 70+ PCs on the Automation segments and were distributed at 3 different facilities. The business segments on site also had several MS-SQL server apps running. Although separated by VLANS, the Automation and Business traffice shared common switches and routers.

No responses yet