Today we are announcing the release of a new app, called Sentinels, to help prevent ongoing attacks and exploits in the DeFi space. The app is part of the OpenZeppelin Defender platform, a security…

We are excited to bring you many new Defender features this month that add powerful functionality to your security operations - all fully included in your Defender account. We built Defender to…

Clones (minimal proxies) as described in ERC1167, are very small, and cheap to deploy, smart-contracts that delegate all incoming calls to an implementation (template) contract containing the…

The BarnBridge team asked us to review and audit their Smart Yield Bond smart contracts. We looked at the code and now publish our results.

Gasless MetaTransactions with OpenZeppelin Defender. The workshop covers the following: Intro to MetaTransactions; How to accept meta-txs in a contract using OpenZeppelin Contracts; Relay meta-txs…

As we build a community of decentralized services for the open economy, we could easily repeat errors of the past. But let's not. Instead, we can build better tools and infrastructure that will…

The Compound team engaged us to audit a new governance mechanism called Governor Bravo.

Fei Protocol is the first protocol creating a stablecoin using a new stability mechanism called direct incentives. This stablecoin, named FEI, is not fully collateralized, but instead uses a system…

The cLabs team working on the Celo platform asked us to review and audit the smart contracts for the protocol. We examined the code, and here we publish our findings.

OpenZeppelin Contracts 3.4 includes an ERC777 security fix for potential reentrancy issues in custom ERC777 extension, virtual view functions, ERC20 permit in drafts, Beacon proxy, and a Minimal…