Doubling Down on Open Source Tools and Phasing Out Defender

OpenZeppelin is doubling down on open source development tools by sunsetting Defender and releasing production-ready open source Relayers and Monitor. Discover new features, and our expanded open ...

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

We describe a vulnerability in the Move IR compiler whereby inline comments can be disguised as...

Security Audits

We found a problem in Libra’s intermediate representation language compiler, the Move IR, that...

Security Audits

The YouNow team asked us to review and audit their Rewards Engine contracts that distribute their...

The YouNow team asked us to review and audit their PROPS Token contracts. We looked at the code and...

Security Audits Solidity Token

The Compound team asked us to review and audit their platform's smart contracts. We examined their...

Security Audits Solidity Lending

The Gas Station Network, or GSN for short, is a decentralized solution for solving user onboarding...

Announcements Products

In this article, we look at a game theoretical attack against smart contract timelock systems that...

Security Audits