Introducing OpenZeppelin Contracts v5.1

Workshop Recap: Managing Smart Contract Upgrades

Upgradeable contracts allow us to alter a smart contract to fix a bug, add additional features, or...

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Workshop Recap: Setting Up Access Control for Smart Contracts

Access control—that is, “who is allowed to do this thing”—is incredibly important in the world of...

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UMA Continuous Audit

In this audit we are taking an iterative approach where we will review individual pull requests as...

Security Audits Solidity oracle

The Graph Rewards Manager Upgrade Audit

The Graph team found an edge case condition in which the amount of accumulated rewards retrieved...

Security Audits

Introducing Contracts Wizard

Contracts Wizard is an interface to interactively build a contract out of components from...

Announcements Products

Empty Set V2 Audit

After auditing the first version of the protocol, the Empty Set Squad team asked us to audit their...

Security Audits Solidity Stablecoin

Holdefi Audit

Holdefi is a lending platform where users can hold their assets and earn interest or borrow tokens...

Security Audits Solidity

OpenZeppelin Contracts 4.0

Due to the new built-in overflow checks in Solidity 0.8, which mark the end of the `SafeMath` era,...

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Celo Contracts Audit – Phase 7

After a seventh phase of auditing, the cLabs team asked us to review and audit the recent changes...

Security Audits

Admin Accounts and Multisigs

Best practice for securing admin accounts is to use a multisig (short for multi-signature wallet)....

Security Insights

GST2 Bytecode Deep Dive

Break down of the bytecode and assembly code used by GST2 (Gas Token 2) in order to understand how...

Security Insights

Service Monitoring and Emergency Response with Defender

The DeFi space, and recently the NFT space, have continued to see a variety of exploits and even...

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