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

It's been a busy 2019 for our dearest Research team. These are the main highlights of the year!.

Security Insights

We take a look at Bounties Network implementation of MetaTransactions and find two medium severity...

Security Insights

One of the topics we focused on at OpenZeppelin this year was feedback. We feel that giving and...

Security Insights

How to protect your contracts against reentrancy after Ethereum’s Istanbul hard fork.

Security Insights Products

Gas Station Network is an open-source service that allows developers to create unique decentralized...

Announcements Security Insights Products

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

Security Insights

Recently, Zeppelin announced that it had joined the Gas Station Network Alliance, a new group...

Security Insights Products

This post explains how to use ZepKit to enable hot reloading to save time when developing smart...

Security Insights Products

While working on an audit for the Coinbase team, we found a critical vulnerability in the DSChief...

Security Insights

While working on an audit for the Coinbase team, we found a critical vulnerability in one of the...

Security Insights

Few blockchain applications have real adoption. It’s a fact. Barely a few surpass the low hundreds...

Security Insights

A mental shortcut for thinking about EVM packages is to compare them to a package manager such as...

Security Insights Products