End AppSec guesswork, uncover application reality. Rein is the first security solution that shows you exactly how your app runs in real time- from the HTTP request down to the precise line of code. Built on a breakthrough, agentless visibility layer, Rein provides real time context, removing the blind spots of traditional API Security, AI security, SCA, and SAST. This makes anything from investigations to real-time detection & response laser accurate. Fortune 500 companies across SaaS, finance, and energy are already using Rein to replace their SCA, API security, MCP security, and AI agent security tools with real time context. This isn't "shift left" or "shift right". It's a new axis entirely. Rein ends AppSec guesswork- and exposes application reality.

End AppSec guesswork, uncover application reality. Rein is the first security solution that shows you exactly how your app runs in real time- from the HTTP request down to the precise line of code. Built on a breakthrough, agentless visibility layer, Rein provides real time context, removing the blind spots of traditional API Security, AI security, SCA, and SAST. This makes anything from investigations to real-time detection & response laser accurate. Fortune 500 companies across SaaS, finance, and energy are already using Rein to replace their SCA, API security, MCP security, and AI agent security tools with real time context. This isn't "shift left" or "shift right". It's a new axis entirely. Rein ends AppSec guesswork- and exposes application reality.