Due to the new built-in overflow checks in Solidity 0.8, which mark the end of the `SafeMath` era, this release of OpenZeppelin Contracts is a new major version of the library.

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…

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…

Ship faster with lower risk. Automate your Ethereum operations to deliver high-quality products faster with less risk to users.

The State of Smart Contract Upgrades - 2020 edition A survey of the different Ethereum smart contract upgrade patterns and strategies from a technical viewpoint, plus a set of good practices and…

We have partnered with Truffle, Nomic Labs (buidler) and Gnosis Safe to release two plugins and a new app to securely deploy and manage upgradeable smart contracts.

We are releasing two new packages to deploy and manage upgradeable contracts from Buidler and Truffle! With them, you can easily and securely leverage the full flexibility of contract upgrades…

We are rolling out a Gnosis Safe App for managing proxy-based smart contract upgrades! This allows you to transfer ownership of a proxy or proxy-admin to a Gnosis Safe, and use the app to directly…

A high-severity vulnerability in the Argent wallet would have allowed attackers to take over wallets with no guardians. User action would have been needed to prevent the takeover attack in less than…