Quantstamp

Active

Security auditing for Web3

Winter 2018Founded 201780 peopleSan Francisco, CA, USA; Remote

quantstamp.com ↗X ↗GitHub ↗Crunchbase ↗See on the Idea Map B2B momentum

About

Quantstamp has protected billions in digital assets from hackers on our mission to secure web3. As a global team of security professionals, we have honed our technology and expertise through hundreds of audits and gained the trust of our clients to keep their innovative products safe. In addition to providing an array of security services, we facilitate the growth and longevity of the web3 space through strategic investments and acting as a trusted advisor to help projects scale. Quantstamp is honored to have worked with some of the top projects in the industry including Aave, Compound, Maker, OpenSea, Polygon and many more. As the leading blockchain security company in this emerging industry, we are always looking for team members that love taking initiative and solving challenging problems. Join the team and help us secure the future of web3.

From their website

as of Jun 7, 2026quantstamp.com ↗

ServicesEnterprise/Contact

Quantstamp is a global leader in blockchain security, offering expert security audits and related services for Web3 projects, including infrastructure and smart contract assessments. They provide managed security services and a security insurance product aimed at protecting digital assets and reducing risk post-deployment.

Quantstamp conducts expert Web3 security assessments, including audits of smart contracts, L1/L2 infrastructures, and Web3 infrastructure configurations. They offer penetration testing, economic exploit analysis, and mitigation guidance, plus audit reports and ongoing security monitoring. Their insurance product, Chainproof, provides coverage against smart contract hacks and slashing risks as part of their security offerings.

Who it’s for: Web3 projects and ecosystems seeking security audits and post-deployment protection, including DeFi protocols, NFT marketplaces, Layer 1/Layer 2 projects, and exchanges.

Features

expert web3 security assessments
penetration testing and infra audits
audit reports and readiness guides
economic exploit analysis and mitigation
managed security services for continuous protection
insurance product for smart contract risk

Hiring/traction noted through longstanding client base, partnerships, and announced products like Chainproof; multiple mentions of audits conducted and ongoing security services.