In our 23-criteria evaluation of global managed security services providers (MSSPs), we identified the 14 most significant ones — Accenture, Alert Logic, AT&T Business, BAE Systems, CenturyLink, Deloitte, IBM, NTT, Optiv Security, Secureworks, Symantec, Trustwave, Verizon, and Wipro — and researched, analyzed, and scored them. This report shows how each provider measures up to help security leaders make the right choice.