ShellBoxes
ShellBoxes is a leading Web3 cybersecurity and blockchain development company...

Quantstamp is a global leader in blockchain security, founded in 2017 with a mission to secure the future of Web3. The company has established itself as one of the most trusted names in smart contract auditing and blockchain security, having secured over $200 billion in digital assets and conducted more than 1,100 audits across 60+ blockchain ecosystems.
Quantstamp offers comprehensive security solutions for the Web3 industry:
Expert security assessments for smart contracts across multiple blockchain platforms including Ethereum, Solana, Polygon, TON, Avalanche, Arbitrum, Cardano, Binance Smart Chain, Flow, Mantle, and Chromia. The team supports over 20 programming languages and delivers thorough manual reviews combined with automated analysis.
Comprehensive security reviews for Web3 infrastructure including API security testing, browser extensions, cloud infrastructure, mobile applications, and web applications. This service addresses the critical intersection of Web2 and Web3 architecture to protect against configuration errors and external attacks.
Specialized analysis and mitigation of flash loan attacks and other economic vulnerabilities in DeFi protocols. Quantstamp developed automated tooling to detect these complex attack vectors that often evade conventional audits.
Quantstamp's team includes security experts from the Ethereum Foundation, Google, Meta, MathWorks, Microsoft, and other leading technology companies. The team has deep expertise in formal verification, static analysis, blockchain audits, penetration testing, and cutting-edge security research.
The company has worked with some of the most recognized names in Web3 including:
With nearly a decade of experience securing blockchain projects, Quantstamp offers unparalleled expertise combined with a complete security stack. The company's commitment to Web3's future is demonstrated through ongoing research, developer education, and contributions to ecosystem security standards. Their audit readiness guides and public audit reports showcase transparency and dedication to advancing the entire industry's security posture.
Quantstamp's Smart Contract Security Audits provide expert Web3 security assessments for...
Quantstamp's Infrastructure Penetration Testing service provides comprehensive security...
Quantstamp's Economic Exploit Analysis service provides specialized detection and...
Share your experience working with Quantstamp by leaving a review.
Leave a ReviewSan Francisco, California, United States
This partner has been verified by Web3Connect on 23 Jan 2026
Founded
2017
Team Size
50-75 employees
ShellBoxes is a leading Web3 cybersecurity and blockchain development company...
CoinFabrik is a pioneering blockchain security and development company founded in 2014,...
Zokyo is a leading web3 security firm founded in 2018, on a relentless mission to make...
Cyberscope is a leading blockchain security company founded in 2023, providing end-to-end...
Kudelski Security is the cybersecurity division of the Kudelski Group, a Swiss company...
CertiK is the largest Web3 security service provider, founded in December 2017 by...