Introducing OpenZeppelin Contracts v5.1

zkSync Fee Model and Token Bridge Audit

This audit focuses on the latest changes to the bootloader, described in our previous audit, the...

Security Audits L2's Solidity

zkSync | Layer 1 Diff Audit February

zkSync Era is a permissionless general-purpose ZK rollup that operates similarly to L1 blockchains...

Security Audits Solidity Rollup

EIP-4337 – Ethereum Account Abstraction Incremental Audit

EIP-4337 is a specification to add account abstraction functionality to the Ethereum mainnet...

Security Audits Solidity EIP

Compound Polygon Bridge Receiver Audit

OpenZeppelin recently audited Compound's Polygon Bridge Receiver and here we publish the results.

Announcements Security Audits Solidity Bridge

How Web3 Progressively Decentralizes using OpenZeppelin Governor

The ultimate goal is for many projects is to be governed entirely by user participation, but...

Products

Announcing The Newest Blockchain Security Fellowship Program

OpenZeppelin sees this fellowship as an opportunity to ensure diversity in the blockchain space by...

Announcements

UMA Optimistic Asserter Audit

UMA's OptimisticAsserter contract uses the same incentive mechanism as the Optimistic Oracle to...

Security Audits Solidity oracle

zkSync Bootloader Audit Report

zkSync is a layer 2 scaling solution for Ethereum based on zero-knowledge rollup technology. The...

Security Audits Solidity Rollup

Improving DAO Security with Compound's Grant Program

As a part of OpenZeppelin’s ongoing security partnership with Compound, the leading blockchain...

Announcements Solidity Lending

Top 10 Blockchain Hacking Techniques of 2022 -Voting Phase Open

A must-read top ten of 2022 surfacing new and practical security research for every blockchain...

Announcements

Defining Industry Standards for Custom Error Messages

Standardized errors allow users to expect a more consistent experience across applications or...

Security Insights

Opyn Bull Strategy Contracts Audit

The system we audited is for an automated trading strategy that allows investors to execute a...

Security Audits