Are you using or building on Safe and worried about malicious DELEGATECALLS? Meet Guardrail - our new project at Safe Research which introduces a simple, composable Guard that blocks unauthorized DELEGATECALLS in your smart wallet flow Think of it this way 🔐Multisig = multiple keys to your vault 🛡️Guardrail = a security officer at the door, double-checking every transaction even after it's signed Guardrail focuses on one high-risk area: DELEGATECALL This opcode lets your Safe run external code as if it were its own. Super flexible, but also dangerous if misused Guardrail only lets your Safe DELEGATECALL into contracts on a specific allowlist. 🔐 You control the list. ⌛ New additions are time-delayed 🚨 Removals are instant This gives you time to catch any malicious/dangerous transaction attempts

Read our blog or test out the app to learn more about how to setup Guardrail and program your wallet policies: