Vendor
Guardian
Smart contract audits with invariant fuzzing, plus off-chain pentests and SDK audits
About
Guardian is a digital asset security firm operated by Guardian Enterprises LLC, which provides smart contract security audit services. Its core engagement is a smart contract audit in three passes: a design review of architecture, trust boundaries, roles, upgrade paths and economic assumptions before implementation is locked; an invariant suite that fuzzes solvency, accounting, rounding and edge states and can be reused for regression testing; and a manual audit in which senior researchers attack protocol logic, integrations, privileged flows and oracle and upgrade risks with proof-of-concept exploits. Guardian describes its standard as two teams reviewing the same scope in parallel, one focused on expert manual review and one using frontier AI models, in addition to the invariant fuzzing. Off-chain services include infrastructure, web application, API, browser extension and automation penetration tests, and SDK audits covering EVM and Solana client libraries. Engagements are scoped from a repository and commit. The company also offers managed security, advisory, security audit grants and a bug bounty and contest platform called Defender.
At a glance
- Audits in three passes: design review, invariant fuzzing suite and manual audit
- Runs a manual review team and an AI-driven team in parallel on the same scope
- Delivers reusable invariant harnesses for regression testing
- Sells infrastructure, web application, API and browser extension pentests
- Audits EVM and Solana SDKs and client libraries
- Services
- Audit
- Penetration testing
- Languages
- Solidity
Guardian: frequently asked questions
- What services does Guardian offer?
- According to its public information, Guardian offers: Audit and Penetration testing.
- Which blockchains does Guardian work with?
- Guardian works with Ethereum and Solana.
- Which smart contract languages does Guardian use?
- Guardian works with Solidity.
- Is Guardian verified on smart-contract.com?
- Not yet. This listing was compiled from public information and Guardian has not claimed it or gone through the vetting process of smart-contract.com.
- How can I get a quote from Guardian?
- Describe your project once on smart-contract.com: you receive comparable quotes from vendors that match it, in the same format. Development and audit are always entrusted to two independent companies.
Where this information comes from
This listing was compiled from the public pages below and last reviewed on September 24, 2026. The company has not claimed it yet, is not a partner of smart-contract.com and has not been vetted.
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