OpenZeppelin Relayers and Monitor are now Open Source

Introducing the alpha release of Open Source Relayers & Monitor for EVM networks, Solana, and Stellar. Get your hands on fully customizable, self-hosted dev tooling for secure onchain automation.

The Aave team asked us to review and audit a pre-production version of their protocol. We looked at...

Security Audits Solidity Lending

The Eco team asked us to review and audit the contracts for their open payment network. We looked...

Security Audits Solidity Payments

The Arro team asked us to audit their ERC20 ArroToken project. We look at the code and now we...

Security Audits

It's been a busy 2019 for our dearest Research team. These are the main highlights of the year!.

Security Insights

In this deep dive into low-level EVM code, you will learn how to code a Minimal Proxy (EIP 1167)...

Products

We take a look at Bounties Network implementation of MetaTransactions and find two medium severity...

Security Insights

One of the topics we focused on at OpenZeppelin this year was feedback. We feel that giving and...

Security Insights

How to protect your contracts against reentrancy after Ethereum’s Istanbul hard fork.

Security Insights Products

The Compound team asked us to audit a patch of their smart contract code. We examined the code and...

Security Audits Solidity Lending

We are excited to collaborate with Microsoft and announce the launch of the OpenZeppelin Audited...

Announcements

Micah Zoltu asked us to review and audit the recoverable wallet smart contract code. We looked at...

Security Audits

The InstaDApp team asked us to audit their proxy wallet and wallet registry contracts. We examined...

Security Audits