Introducing OpenZeppelin Contracts v5.1

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,...

Products

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...

Products

Fundamentals of Gas Tokens

Gas tokens should be minted at a low gas price, and then burnt at a high gas price, thereby saving...

Security Insights

Introducing Defender Sentinels

Today we are announcing the release of a new app, called Sentinels, to help prevent ongoing attacks...

Products

OpenZeppelin Defender – March 2021 Update

We are excited to bring you many new Defender features this month that add powerful functionality...

Products

Workshop Recap: Cheap contract deployment through Clones

Clones (minimal proxies) as described in ERC1167, are very small, and cheap to deploy,...

Products

BarnBridge Smart Yield Bonds Audit

The BarnBridge team asked us to review and audit their Smart Yield Bond smart contracts. We looked...

Security Audits