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 ...

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

Announcements

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

Learn how to use OpenZeppelin’s Defender to set up and deploy timelocks.

Products

Creating dense Subgraphs is one of the most important aspects of indexing on-chain information. In...

Products

PoolTogether is a lossless lottery built with smart contracts using Defender to automate the award...

Products

We are thrilled to announce that OpenZeppelin Contracts will be integrating The Graph’s subgraphs,...

Announcements Security Insights

Our latest speaker series, Secure Development is aimed to help improve security practices for the...

Security Insights Products

Chainlink’s Keeper Network is a secure way to outsource contract operations to a decentralized...

Products

Disclosure of a severe attack vector in the deployment of the popular Gnosis Safe Multisig wallet....

Security Insights Zero-Day Vuln