ZKsync is a global network of zero-knowledge rollups that enables fast, secure, and low-cost transactions on Ethereum. Developed by Matter Labs, ZKsync has evolved from an initial Layer 2 rollup to a comprehensive ZK ecosystem supporting EVM compatibility, account abstraction, and modular rollup architecture through their ZKChain technology.
ZKsync's rapid innovation journey—from ZKsync 1.0 to advanced interoperability and bridge protocols—demanded a security model that could keep pace with fast releases without compromising trust. As Matter Labs scaled ZKsync from a single-chain rollup into a modular, multi-chain ZK ecosystem, their architecture faced new classes of risk.
The protocol faced critical security challenges:
Matter Labs needed a security partner embedded into their development cycle—with the bandwidth, expertise, and context to keep up with constant innovation while ensuring bulletproof security.
Since 2022, OpenZeppelin has provided continuous security coverage for Matter Labs, becoming deeply integrated into ZKsync's development process. This partnership evolved from foundational ZKsync 1.0 audits to supporting ZKsync Era's mainnet launch and ecosystem expansion.
Our comprehensive approach includes:
Continuous Release Security: Differential audits on all major ZKsync releases, securing every version bump with deep understanding of architectural changes and their security implications.
Component-Level Expertise: Focused audits of high-impact features including Account Abstraction Single Sign-On (AA SSO), Guardian Recovery Systems, and ZKsync OS components.
Deep Protocol Analysis: Specialized reviews of zero-knowledge systems and protocol primitives, including cryptographic precompiles, EVM interpreter, and ZKChain interoperability protocols.
Over time, we developed deep, system-wide understanding by engaging at every milestone. This long-term collaboration enabled us to establish a dedicated security team with strong familiarity with Matter Labs' codebase, development processes, and roadmap priorities.
As a result, OpenZeppelin serves as a strategic partner providing proactive, context-aware guidance that supports both the security and design of the ZKsync protocol as it scales.
819 total issues uncovered across 48 audits since September 2022, covering every critical component of ZKsync's evolution:
$1B+ total value secured with zero major security incidents despite ZKsync's rapid innovation and frequent releases, demonstrating the effectiveness of continuous security partnership.
Our embedded approach enabled Matter Labs to:
OpenZeppelin's comprehensive security coverage supported ZKsync's growth into one of Ethereum's leading Layer 2 solutions, enabling the safe deployment of:
OpenZeppelin's strategic security partnership has been fundamental to ZKsync's success, enabling Matter Labs to push the boundaries of ZK technology while maintaining the highest security standards. Through 48 comprehensive audits and continuous collaboration, we've secured every critical milestone in ZKsync's evolution from initial rollup to advanced modular ecosystem, proving that innovation and security can advance together.