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 ...

During a comprehensive audit of the Compound Finance protocol, OpenZeppelin reviewed a...

Announcements Solidity Lending

We are pleased to release a new Comprehensive Audit Readiness Guide, which is intended to provide...

Announcements

In another round of auditing, the cLabs team asked OpenZeppelin to review and audit recent changes...

Security Audits Solidity

The 1inch team asked us to review and audit their Fixed Rate Swap smart contracts. We looked at the...

Security Audits Dex Solidity

The @UMAprotocol team asked us to review and audit a new governance proposal contract, a...

Security Audits Solidity oracle

We are pleased to announce two new security initiatives, involving partnerships with Immunefi and...

Announcements

The 1inch team asked us to review and audit their Limit Order Protocol v2 smart contracts. We...

Security Audits Dex Solidity

The Tally team asked us to review and audit a set of contracts with the final goal to improve...

Security Audits

The UMA team asked us to review and audit their L2 bridge smart contracts for the protocol. We...

Security Audits Solidity Bridge oracle

The Optimism team is building the OVM, a fully-featured, EVM-compliant execution environment...

Security Audits L2's Solidity

By making Defender free, more projects can scale while protecting users from known and unknown...

Announcements

We are proud to announce the open source Smart Contract Security Registry. Effective security not...

Announcements