In our 14-criterion evaluation of vulnerability risk management providers, we identified the 13 most significant ones — Brinqa, Digital Defense, Expanse, Kenna Security, NopSec, Outpost24, Qualys, Rapid7, RedSeal, RiskIQ, RiskSense, Skybox Security, and Tenable — 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.