OpenZeppelin

OpenZeppelin

Secure smart contracts library and audits

Overview

OpenZeppelin provides tools and services to help developers build and manage secure smart contracts for blockchain apps. It offers a Solidity library of reusable, secure contracts (Contracts), a platform called Defender that automates Ethereum operations and deployment tasks, and security audits that review contracts for vulnerabilities. These products work by giving developers ready-made, battle-tested code, automated operational workflows, and expert security reviews to reduce risk in blockchain projects. The company differentiates itself through a strong focus on security, an open-source community, and a cohesive suite that covers development, automation, and auditing, rather than relying on a single product. Its goal is to raise the overall security and reliability of smart contracts and accelerate mainstream adoption of blockchain technology by providing trusted tooling and services to developers, startups, and enterprises.

About OpenZeppelin

Simplify's Rating
Why OpenZeppelin is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Enterprise Software

Cybersecurity

Crypto & Web3

Company Size

51-200

Company Stage

Late Stage VC

Total Funding

N/A

Headquarters

Sa Pobla, Spain

Founded

2015

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Simplify's Take

What believers are saying

  • Pacific Meta partnership on August 26, 2026 targets Japan's institutional onchain security market.
  • Tokenized Vault Foundation partnered July 23, 2026, extending OpenZeppelin into onchain funds.
  • Zama, OpenZeppelin, and Inco formed the Confidential Token Association for encrypted smart contracts.

What critics are saying

  • CVE-2026-48054 exposed Contracts Wizard code injection, risking developer machine compromise before 0.10.9.
  • AI agents sharpen attack asymmetry; Manuel Aráoz warned DeFi was unsafe in May 2026.
  • Cyfrin, Trail of Bits, and Sherlock pressure audit margins as standards commoditize.

What makes OpenZeppelin unique

  • OpenZeppelin Contracts 5.7 added paymasters, crosschain token bridges, and deployment primitives on July 30, 2026.
  • RWA Wizard launched August 27, 2026, generating ERC-3643 compliant Stellar asset contracts.
  • OpenZeppelin joined Linux Foundation Decentralized Trust on January 7, 2026.

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Benefits

Unlimited holidays 🏝

Fully remote 🌎

Paid parental leave 💙

Team events: 😎

Work from home office equipment stipend 🪑

Monthly allowance for wellness activities 💪

Coworking 👩‍💻

Working with a global team in a fast-growing industry 🚀

Company News

Coinfomania
Aug 27th, 2026
OpenZeppelin launches RWA Wizard to support tokenized assets.

OpenZeppelin launches RWA Wizard to support tokenized assets. August 27th, 2026 OpenZeppelin introduces its RWA Wizard to support tokenized assets with compliance features. Here's why it matters. Quick take. Summary is AI generated, newsroom reviewed. * OpenZeppelin announces RWA Wizard for tokenized real-world assets. * The tool ensures investor eligibility and transfer restrictions. * Integration with Stellar enhances its market reach. Sponsored: Coinfomania - Get your ad in the spotlight. Book your slot! OpenZeppelin has announced the launch of its RWA Wizard, designed to facilitate the creation of contracts for tokenized real-world assets. This tool includes built-in features for investor eligibility, transfer restrictions, and recovery controls. The integration with Stellar expands its utility, potentially reshaping how tokenized assets are managed in compliance with regulatory frameworks. For more details, check out the announcement here. Inside the move. As the broader crypto market exhibits mixed signals, OpenZeppelin's introduction of the RWA Wizard comes at a time when the demand for compliant frameworks in tokenized assets is on the rise. The wizard aims to simplify the process for developers by offering essential compliance features that align with regulatory expectations. This move not only enhances the functionality of tokenized assets but also signals OpenZeppelin's commitment to bolstering compliance in the sector. What Coinfomania know. * OpenZeppelin is launching the RWA Wizard for real-world asset contracts. The wizard includes investor eligibility and transfer restrictions. Recovery controls are also integrated for added security. It now supports integration with Stellar. This initiative aims to meet regulatory compliance for tokenized assets. Market snapshot. Currently, the market is witnessing a period of adjustment amid varying sentiments across major assets. The introduction of the RWA Wizard by OpenZeppelin is likely to attract attention from developers looking for compliant solutions, which could lead to increased activity in the tokenized asset space. While the overall market shows mixed momentum, initiatives like these could play a crucial role in enhancing investor confidence and regulatory alignment. OpenZeppelin is a prominent organization in the blockchain security space, known for its tools and frameworks that enhance the safety of smart contracts. Its jurisdiction in this announcement underlines the growing importance of compliance in the rapidly evolving landscape of tokenized assets, particularly as regulatory scrutiny intensifies. What traders are watching next. Traders should closely monitor how the market reacts to OpenZeppelin's RWA Wizard launch. The potential for increased adoption of tokenized assets could create new opportunities for developers and investors alike. Watch for any subsequent announcements from OpenZeppelin and other players in the compliance space, as they could impact market dynamics significantly. Contributors: Coinfomania News Room Followed by top voices in crypto Follow Coinfomania on google News. Get the latest crypto insights and updates.

Sierra
Jul 22nd, 2026
Upgrading Sierra Protocol's security with timelock access control.

Upgrading Sierra Protocol's security with timelock access control. Jul 22, 2026 Sierra has deployed an instance of OpenZeppelin's TimelockController to govern every non-operational, administrative role for the protocol. All privileged actions, including protocol upgrades, parameter changes and role assignments, are now enforced by a minimum 48-hour delay before they can execute What is a timelock? A timelock is a smart contract that enforces a predefined delay before certain actions can be executed. The delay is encoded in the timelock smart contract and provides stakeholders with time to review upcoming changes and respond as needed. Sierra has chosen to use the OpenZeppelin TimelockController, as it is the industry-standard contract for delaying privileged actions. The TimelockController contract is the most battle-tested timelock across the largest protocols in DeFi. Billions of dollars in TVL and protocol treasury assets are constantly protected by the TimelockController contract. Enhancing Sierra's security stack. Protocol security has always been a top priority for Sierra, including: * Audited smart contracts with Spearbit Cantina * Fireblocks MPC custody, which includes address whitelisting, transaction policy enforcement and signing quorum * Backup recovery with Station70 * 24/7 monitoring and alerting with Hypernative and Betterstack Despite having an industry-leading security stack, Sierra received feedback from curators, hedge funds and other stakeholders that administrative actions such as a protocol upgrade or a role change could take effect the moment it was signed. While these actions were safeguarded by signing quorum and transaction policy enforcement in Fireblocks, there was no mandatory waiting period between approval and execution. By deploying a timelock that covers all administrative roles and functions, Sierra has added an additional layer of security. The timelock hardens the access control of the smart contracts powering the Sierra Protocol. Instead of the Fireblocks wallet holding these administrative permissions directly, the permissions now sit with the timelock contract, and the Fireblocks wallet acts through it. This means that every administrative call now follows a two-step flow: * Its Fireblocks wallet schedules the action on the timelock, which starts the delay countdown * After a minimum of 48 hours, the action becomes executable, and only then can it be carried out During that window, the pending action is visible onchain to anyone watching. Stakeholders of the Sierra community can set up onchain alerting systems like Hypernative to be immediately notified if an event occurs. Additionally, the timelock has a Canceller role that can veto a pending action prior to execution if needed. Operational workflows, such as processing redemptions or exchange rate automation, have been excluded from the timelock. The timelock smart contract address for SIERRA on Avalanche is: 0xD3cE23C1cC1ae288496Baf1a276A9B8640206fdd and is available in its docs. In addition, all future LVTs issued by the Sierra Protocol will have a timelock as part of the standard deployment.

ForkLog
May 27th, 2026
OpenZeppelin Attributes DeFi Vulnerability to AI Advancements.

OpenZeppelin Attributes DeFi Vulnerability to AI Advancements. Manuel Aráoz from OpenZeppelin called "the entire DeFi sector" unsafe. Manuel Aráoz, co-founder of the cybersecurity firm OpenZeppelin, has deemed "the entire DeFi sector" unsafe. According to him, the rapid development of AI agents has created a critical asymmetry between defenders and attackers. Aráoz mentioned that he personally advised friends and family to close all positions in DeFi protocols. This warning applies even to well-established platforms like Aave, MakerDAO, and Compound. The expert explained his stance by noting that modern neural networks already surpass humans in finding code vulnerabilities. In such a scenario, smart contract security becomes a losing battle: developers must fix every single bug, while a malicious actor using AI needs only to find one. The statement comes amid growing concerns about the use of artificial intelligence in Web3. In March, OpenZeppelin introduced OpenZeppelin Skills, a tool for training AI agents to work safely with smart contracts. At the time, the company warned of the risks of incorrect toolchain configuration and errors complicating code auditing and verification. Increasing risks have also impacted market metrics. The total value locked in the DeFi sector has decreased by 14% since mid-April, from $172 billion to $148 billion. Earlier in May, Anthropic published the first report on Project Glasswing, a program for finding vulnerabilities using the Claude Mythos model. Нашли ошибку в тексте? Выделите ее и нажмите CTRL+ENTER

Blockchain Reporter
Jul 24th, 2025
Zama and OpenZeppelin Team Up to Deliver Confidential Smart Contracts for Institutions

Zama, an open-source cryptography company pioneering Fully Homomorphic Encryption (FHE), is teaming up with OpenZeppelin to use confidential smart contracts for production.

Zama
Jul 23rd, 2025
Zama Partners with OpenZeppelin to Bring Confidential Smart Contracts to DeFi and Digital Assets

Zama partners with OpenZeppelin to bring confidential smart contracts to defi and digital assets. The Zama Team At Zama, its mission is clear: to become the confidentiality layer of blockchains. Zama Confidential Blockchain Protocol believe this is the last mile before mass adoption of blockchain as the backbone of global payments, finance, and government. Without privacy, institutions cannot - and will not - migrate their most critical operations onchain. Today, Zama Confidential Blockchain Protocol is taking a decisive step toward that future, and it involves its new partners at OpenZeppelin. Announcing its partnership with OpenZeppelin. Zama is partnering with OpenZeppelin, the most trusted provider of open source standards for building secure blockchain applications, to bring production-ready confidential smart contracts to Web3 using Fully Homomorphic Encryption (FHE). If Zama Confidential Blockchain Protocol want financial institutions - large and small - to use Zama as the confidentiality backbone for all their services, Zama Confidential Blockchain Protocol need to deliver a secure, reliable, and scalable mainnet that meets their stringent requirements. There's no better partner for this mission than OpenZeppelin, whose audited smart contract libraries and tools have become the gold standard for Ethereum and other blockchain platforms, securing over $27 trillion in total value transferred. Rand Hindi, CEO at Zama said: "Blockchain has proven its value for moving money and enabling programmable finance. The next frontier is the digitization of public infrastructure, from identity systems to land registries. But none of these applications can reach their full potential without confidentiality. Financial institutions need transaction confidentiality. Citizens need data protection. Enterprises need competitive confidentiality. At Zama, we're developing the cryptographic infrastructure to enable fully confidential smart contracts while preserving the inherent benefits of public blockchains: decentralization, composability and verifiability. Our partnership with OpenZeppelin, whose smart contract standards secure 218 billions in digital assets, enables us to build confidential primitives with the security and auditability that institutions demand. Together, we're creating the confidential computing layer that will unlock blockchain's next chapter." What Zama Confidential Blockchain Protocol is building together. Confidential contracts library. OpenZeppelin is developing an open-source Confidential Token standard interface, similar to the ERC20 but with encrypted balances and transaction values. OpenZeppelin has also developed the first implementation of that interface, using Zama's FHEVM. The implementation contains contracts and utilities that use the FHEVM coprocessor, leveraging FHE's main feature - secure computation directly on encrypted data - the FHEVM enables confidential smart contracts on EVM-compatible blockchains. The Github repository is already public; check it out here. Jonathan Alexander, CTO at OpenZeppelin said "Our partnership with Zama and the creation of the Confidential Token Association mark a pivotal step in bringing encrypted smart contracts into production. Together, we're defining a new open source standard - confidential tokens - that offers the simplicity and interoperability of ERC20, but with encrypted balances and private execution by default. This is the foundation institutions need to build securely onchain." Confidential smart contract primitives. * Encrypted tokens * Sealed-bid auctions * Confidential vesting * Private governance * Tokenized RWA Developer tools & infrastructure. * Integration with a customized version of OpenZeppelin's Contracts Wizard for FHE * A new Privacy Relayer to enable seamless encrypted transaction execution * All components built specifically for encrypted compute; designed for confidentiality, security, and usability from day one Setting the standard for confidential tokens. Zama, Openzeppelin and Inco Network, also teamed to form the Confidential Token Association, to develop the Confidential Token Standard: an interface for empowering token standards such as ERC20 with confidentiality. This isn't just about adding privacy features; it's about making privacy the default. The path to institutional adoption. This partnership unlocks the next generation of institutional adoption and onchain applications. When privacy becomes as simple as deploying a standard smart contract, Zama Confidential Blockchain Protocol remove the last barrier preventing traditional finance from embracing blockchain technology. All contracts will be open source, audited, and ready for production use. Because when it comes to the future of finance, privacy isn't optional; it's essential. Ready to build with confidential smart contracts? Explore the repository and join Zama Confidential Blockchain Protocol in making confidentiality the default for Web3.

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