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 Relayer and Monitor. Discover new features, and our expanded open ...

The State of Smart Contract Upgrades - 2020 edition A survey of the different Ethereum smart...

Security Insights Products

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

Announcements Products

In this post, we’ll go in depth into the CREATE2 opcode and its uses in counterfactual...

Security Insights

Deploying to production can be a stressful experience, especially if you don’t have a proper suite...

Security Insights Products

Two months ago, we presented the EVM package standard as a means to securely share on-chain...

Security Insights

This week started off with the finding of malicious code injected into a dependency of a popular...

Security Insights

Much has been discussed around proxy patterns and how to best achieve upgradeability in Ethereum...

Products

With the first release of ZeppelinOS two months ago, the key issue we wanted to tackle was...

Products

As we’re wrapping up EthDenver 2018, the #gratitude hashtag falls short to say thanks to all the...

Events

As you are beginning with Ethereum development, and after going through some of the many excellent...

Security Insights

Today we witnessed a possible major attack on the Parity MultiSig contract. This follows a previous...

Security Audits Rust

Today, we witnessed the second largest hack, in terms of ETH stolen, in the history of the Ethereum...

Security Insights