Past Events

Smart Contract Security Guidelines #4: Strategies for Safer Governance systems

This guide focuses on showcasing battle-tested practices and recommended patterns to implement safer and more robust…

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Smart Contract Security Guidelines #3: The Dangers of Price Oracles

This guide focuses on showcasing the architecture, roles and subtleties of most popular price oracles in Ethereum, ways…

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Protect Your Users With Smart Contract Timelocks

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

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LATEST NEWS

OpenZeppelin Contracts 4.3

This new release includes a modular system of contracts for on-chain governance, based on GovernorAlpha and GovernorBravo, covered more in depth in our Governor announcement.

Introducing OpenZeppelin Governor

Next Generation Smart Contract Governance: We are pleased to announce OpenZeppelin Governor, a critical governance offering released in Contracts 4.3

Introducing OpenZeppelin Subgraphs

We are thrilled to announce that OpenZeppelin Contracts will be integrating The Graph’s subgraphs, combining two of the most important building blocks of the open economy.

Introducing the OpenZeppelin Secure Development Series

Our latest speaker series, Secure Development is aimed to help improve security practices for the next generation of Solidity developers.

OpenZeppelin Contracts 4.2

This release introduces our latest work on governance contracts, gas cost reductions, new helper functions, and the ERC20Wrapper extension. In the future, we plan to release major governance features…

Developers Can Now Register and Manage Chainlink Keeper Jobs with OpenZeppelin Defender

We are excited to announce integrated support for the Chainlink Keepers Open Beta directly within the OpenZeppelin Defender platform—the leading security operations suite for Ethereum and EVM-based…

Moonbeam Integrates with OpenZeppelin to Provide Best-in-Class Security Tools to Developers

Moonbeam, the Ethereum-compatible smart contract platform on Polkadot, announced an integration with OpenZeppelin, an open-source framework to build secure smart contracts. This integration…

FEI Post Mortem

On Sunday May 2nd, 2021, the Fei Labs team identified an economic vulnerability that affected the Fei Protocol, which would have allowed an attacker to drain funds from the ETH-FEI Uniswap pool. The…

OpenZeppelin Contracts 4.1

This new release introduces UUPS proxies as a cheaper alternative to Transparent proxies. Additionally, a new ERC20 extension allows easy creation of tokens with built-in flash minting, and a new…

Introducing Contracts Wizard: An Interactive Contract Generator

Contracts Wizard is an interface to interactively build a contract out of components from OpenZeppelin Contracts. Select the kind of contract that you want (current support for ERC20 and ERC721), set…

LATEST NEWS

OpenZeppelin Contracts 4.3

This new release includes a modular system of contracts for on-chain governance, based on GovernorAlpha and GovernorBravo, covered more in depth in our Governor announcement.

Introducing OpenZeppelin Governor

Next Generation Smart Contract Governance: We are pleased to announce OpenZeppelin Governor, a critical governance offering released in Contracts 4.3

Introducing OpenZeppelin Subgraphs

We are thrilled to announce that OpenZeppelin Contracts will be integrating The Graph’s subgraphs, combining two of the most important building blocks of the open economy.

Introducing the OpenZeppelin Secure Development Series

Our latest speaker series, Secure Development is aimed to help improve security practices for the next generation of Solidity developers.

OpenZeppelin Contracts 4.2

This release introduces our latest work on governance contracts, gas cost reductions, new helper functions, and the ERC20Wrapper extension. In the future, we plan to release major governance features…

Developers Can Now Register and Manage Chainlink Keeper Jobs with OpenZeppelin Defender

We are excited to announce integrated support for the Chainlink Keepers Open Beta directly within the OpenZeppelin Defender platform—the leading security operations suite for Ethereum and EVM-based…

Moonbeam Integrates with OpenZeppelin to Provide Best-in-Class Security Tools to Developers

Moonbeam, the Ethereum-compatible smart contract platform on Polkadot, announced an integration with OpenZeppelin, an open-source framework to build secure smart contracts. This integration…

FEI Post Mortem

On Sunday May 2nd, 2021, the Fei Labs team identified an economic vulnerability that affected the Fei Protocol, which would have allowed an attacker to drain funds from the ETH-FEI Uniswap pool. The…

OpenZeppelin Contracts 4.1

This new release introduces UUPS proxies as a cheaper alternative to Transparent proxies. Additionally, a new ERC20 extension allows easy creation of tokens with built-in flash minting, and a new…

Introducing Contracts Wizard: An Interactive Contract Generator

Contracts Wizard is an interface to interactively build a contract out of components from OpenZeppelin Contracts. Select the kind of contract that you want (current support for ERC20 and ERC721), set…

Our most recent security audit reports

Check out all of our audits >