In Forrester's 60-criteria evaluation of the North American managed security services market, we identified the nine significant service providers in this category — AT&T, CSC, Dell SecureWorks, HP, IBM, Symantec, Trustwave, Verizon, and Wipro — and researched, analyzed, and scored them. This report details our findings about how each service provider measures up and plots where they stand in relation to each other, to help security and risk (S&R) professionals select the right partner for their managed security services.