Quantstamp

Quantstamp is a blockchain security company that helps Web3 projects protect their code and infrastructure. Its main services include smart contract audits, infrastructure security assessments, and economic exploit analysis. The company also offers insurance products like Chainproof and DeFi Protection to safeguard user funds.

Its core strength lies in a comprehensive security stack that combines manual review with automated tools, covering everything from code-level vulnerabilities to economic attack vectors such as flash loan exploits. This full-spectrum approach allows it to identify issues that pure code audits might miss.

The market pain point Quantstamp addresses is the persistent risk of hacks and exploits in decentralized finance and other blockchain applications. For example, in June 2026 alone, over $75 million was lost across 32 crypto incidents, with one notable case involving a social-engineering attack that bypassed smart contract security entirely. Such events highlight the need for both technical audits and broader security monitoring.

In the past six months (March to September 2026), Quantstamp has been actively involved in several high-profile security events. It completed an audit for Archer Money, a platform that uses AI agents for behavior-based payouts. It also analyzed the LayerZero and KelpDAO incident, which involved approximately 30,766 ETH being frozen by the Arbitrum Security Council. Additionally, the company published a postmortem on the Humanity Protocol compromise and released research on credential leaks in LLM agent skills. These activities demonstrate its ongoing role in both preventing and responding to security incidents across the Web3 ecosystem.