OpenZeppelin smart contract audit company: services, notable audits, and reputation in Web3 security.
Security Standards for Smart Contracts
OpenZeppelin is synonymous with smart contract security. Their open-source contract library is used by virtually every Ethereum project, and their security team has audited the most critical DeFi infrastructure. Beyond audits, OpenZeppelin offers Defender, a platform for secure smart contract operations.
Key Facts
- Website: openzeppelin.com
- Founded: 2015
- Headquarters: Remote (Global)
- Team size: 100+
- Rating: 4.9 / 5 (300+ reviews)
- Pricing: $30,000 - $500,000+
- Turnaround: 3-6 weeks
Pros
- Industry-standard library
- Defender platform
- Upgradability experts
- Governance specialists
- Strong reputation
- Community focus
Cons
- Premium pricing
- Library-focused perspective
- Limited availability
Features
- Smart Contract Audit: Available
- OpenZeppelin Contracts: Available
- Defender Platform: Available
- Upgradability Review: Available
- Governance Audit: Available
- Token Review: Available
- Secure Development Training: Available
- Continuous Monitoring: Available
- Incident Response: Available
- Best Practices Consulting: Available
Notable Audits
- Coinbase — Exchange (2021)
- Compound — DeFi (2019)
- Ethereum Foundation — Infrastructure (2020)
- AAVE — DeFi (2020)
- Optimism — Layer 2 (2021)
Frequently Asked Questions
What is OpenZeppelin Contracts?
Our open-source library of secure, audited smart contract components that serve as building blocks for most Ethereum projects.
What is Defender?
Defender is our platform for secure smart contract operations, including automated monitoring, admin operations, and incident response.
Do you audit non-EVM chains?
We primarily focus on EVM-compatible chains but have expanded to other ecosystems for select engagements.