In our 26-criterion evaluation of global managed security services providers (MSSPs), we identified the 15 most significant ones — Accenture, Alert Logic, AT&T Cybersecurity, Capgemini, CenturyLink, Cognizant, Deloitte, ElevenPaths, EY, IBM Security Services, NTT, Optiv, Secureworks, Trustwave, and Wipro — and researched, analyzed, and scored them. This report shows how each provider measures up and helps security and risk professionals select the right one for their needs.