Introducing OpenZeppelin Defender

Introducing OpenZeppelin Defender: secure operations for Ethereum OpenZeppelin Defender allows projects to get products to market faster and…

Read More

Latest stories

Introducing Contracts Wizard: An Interactive Contract Generator

Contracts Wizard is an interface to interactively build a contract out of components from OpenZeppelin Contracts.…

Read More

Holdefi Audit

Holdefi is a lending platform where users can hold their assets and earn interest or borrow tokens and repay them after…

Read More

OpenZeppelin Contracts 4.0

Due to the new built-in overflow checks in Solidity 0.8, which mark the end of the `SafeMath` era, this release of…

Read More

Our most popular audit reports

SEE ALL >
More stories

Admin Accounts and Multisigs

Best practice for securing admin accounts is to use a multisig (short for multi-signature wallet). A multisig is a contract that can execute actions, as long as a predefined number of trusted members…

GST2 Bytecode Deep Dive

Break down of the bytecode and assembly code used by GST2 (Gas Token 2) in order to understand how it works at a low-level.

Workshop Recap: Service Monitoring and Emergency Response with Defender

The DeFi space, and recently the NFT space, have continued to see a variety of exploits and even insider attacks resulting in vault losses, unexpected liquidations, and fraudulent token mints.…

Fundamentals of Gas Tokens

Gas tokens should be minted at a low gas price, and then burnt at a high gas price, thereby saving gas fees.

Introducing Defender Sentinels – Smart Contract Monitoring & Emergency Response

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…

OpenZeppelin Defender – March 2021 Update

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…

Workshop Recap: Cheap contract deployment through Clones

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…

Workshop Recap: Gasless MetaTransactions with OpenZeppelin Defender

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…

An Introduction to Decentralized DevSecOps

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…

Compound Governor Bravo Audit

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

More stories

Admin Accounts and Multisigs

Best practice for securing admin accounts is to use a multisig (short for multi-signature wallet). A multisig is a contract that can execute actions, as long as a predefined number of trusted members…

GST2 Bytecode Deep Dive

Break down of the bytecode and assembly code used by GST2 (Gas Token 2) in order to understand how it works at a low-level.

Workshop Recap: Service Monitoring and Emergency Response with Defender

The DeFi space, and recently the NFT space, have continued to see a variety of exploits and even insider attacks resulting in vault losses, unexpected liquidations, and fraudulent token mints.…

Fundamentals of Gas Tokens

Gas tokens should be minted at a low gas price, and then burnt at a high gas price, thereby saving gas fees.

Introducing Defender Sentinels – Smart Contract Monitoring & Emergency Response

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…

OpenZeppelin Defender – March 2021 Update

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…

Workshop Recap: Cheap contract deployment through Clones

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…

Workshop Recap: Gasless MetaTransactions with OpenZeppelin Defender

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…

An Introduction to Decentralized DevSecOps

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…

Compound Governor Bravo Audit

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