Guardrail

Guardrail is a real-time onchain security platform built for DeFi protocols, monitoring transactions across 30+ blockchains to detect and stop threats before damage occurs. Founded in 2022 by Samridh Saluja, a former Security Engineer at LinkedIn, Guardrail addresses the gap left by traditional smart contract audits, which catch baseline issues but miss post-deployment, real-world threats. The platform offers continuous monitoring with AI-powered anomaly detection, custom protocol-specific guards, and automated response capabilities including alerts, pausing, and fund protection—all with sub-second response times. Guardrail is a Rain company and targets DeFi teams that need enterprise-grade security infrastructure without building massive in-house security teams.