Smart Contract Security

Securing the Future of Web3

Quantstamp is a global leader in blockchain security. Since 2017, we’ve secured billions in digital assets and worked with some of the most recognized names in web3.
Request AuditRequest Audit
We're Hiring
40+
Ecosystems
$200B+
Digital Assets Secured
Audits Conducted
Trusted by the industry’s most
notable projects
Secured by Quantstamp

250+

Clients
4 Regional Offices

$200B+

Digital Assets Secured
Innovative Customers

15+

Countries
Security Network
Audits Conducted
Trusted by the industry’s most notable projects
Notable Satisfied Customers
Blockchains
L1/L2
ETH 2.0
Solana
Polygon
TON
Avalanche
Arbitrum
Mantle
flow
bitfinity
binance
Stacks
Chromia
Cardano
Gaming & NFTs
Square Enix
Open Sea
Parallel
Nifty Island
Portal
Paragons
Axie Infinity
Decentraland
The Sandbox
ZED
ETH 2.0
Mavis
Art Blocks
DeFi
Maker
Polymarket
Curve
Lido
Compound
Venus
Stargate Finance
Hashflow
Ethena
Pendle
Tensorplex
Ambient
Puffer
Infrastructure
& Staking
Galxe
API3
Sequence
Blockdaemon
Alchemy
Kiln
Luganodes
Stakewithus
RockX
Twinstake
ssv.network
Obol
hashport
Institutional
BitGo
VISA
eToro
Siemens
Anchorage Digital
Sequoia
World Economic Forum
Revolut
Mirror
Ribbon
Wintermute
Toyota
Mitsubishi
What our clients say

Quantstamp has been our dedicated partner for audits over the past year, and the experience has been nothing short of outstanding. We are consistently impressed with the quality and thoughtfulness of their findings and recommendations, not only in their audits but also through our collaboration in advancing ecosystem standards. We look forward to continuing our partnership!

Jay Paik Engineering Manager at Alchemy

We've worked with many auditing companies over the years and found Quantstamp to consistently deliver an exceptional all-around experience. They are a valued long-term partner in achieving our security objectives.

Burak Benligiray Co-Founder and Tech Lead at API3

Quantstamp has been an essential partner in enhancing the security of Venus Protocol. Their audits are always thorough and detailed, helping us identify and address any potential vulnerabilities. With their expertise in DeFi security, we've successfully strengthened our platform and improved the protection of our users' assets. The team is professional, precise, and easy to work with, making the audit process smooth and insightful. We highly recommend Quantstamp to any project seeking reliable and high-quality security audits.

Venus Protocol

As we continue to push the boundaries of innovation, Quantstamp has been an invaluable partner in ensuring the security and integrity of our platforms and smart contracts. Their thorough, insightful audits and quick turnaround times have given us the confidence to scale with peace of mind. We deeply appreciate the expertise and professionalism they bring to every engagement and look forward to continuing our collaboration as we grow.

Glenn Brown VP of Product at Kiln

As we build blockchain experiences that thrive in the mainstream, alongside thousands of talented independent builders on Flow, Quantstamp is bringing to the ecosystem the high-quality security and code review their firm has long been recognized for. Quantstamp will no doubt be an important part of Flow's continued scaling and success.

Roham Gharegozlou CEO at Dapper Labs

Quantstamp's ability to quickly produce comprehensive and insightful audits has proven them to be an invaluable partner for our grantees. The importance of the extra layer of due diligence they provide can't be overstated.

Richard Brown Former Head of Community Development at Maker
Previous
Next
Why Quantstamp
Since 2017, we’ve worked with some of the most recognized names in web3. Discover why hundreds of clients trust Quantstamp to secure their projects.
Our team hails from companies such as the Ethereum Foundation, Google, Meta, MathWorks, Microsoft and others, with deep expertise in formal verification, static analysis, blockchain audits, penetration testing, and original leading-edge research.
Quantstamp is familiar with a wide range of programming languages and has audited
Layer 1s, Layer 2s, DeFi protocols, NFT marketplaces, exchanges, clients, and more.

Our team has extensive experience with meta-languages and compilers, both in academia and in the field.
Quantstamp provides managed security services for continuous security and monitoring post-deployment.

Our insurance product, Chainproof, secures customers against smart contract hacks and slashing risks.
Quantstamp is securing web3 through our audits and security services, while also building the future of the ecosystem through our products, partnerships, investments, and education.

We have secured two Ethereum 2.0 clients, Prysm and Teku, and received multiple grants from the Ethereum Foundation for L2 security and scaling.
Recent posts

News & Announcements

See all posts
View blog post
Quantstamp Announcements
Monthly Hacks Roundup: April 2024
April was a hectic month for the web3 security landscape, including significant rug pulls and security hacks totaling over $103 million in losses. Read on as we dive into three major security incidents and some of the trends from last month.
Read more about the blog post
View blog post
Quantstamp Announcements
Monthly Hacks Roundup: March 2024
March was a volatile month for the web3 security landscape, with significant security breaches totalling over $152 million in losses. Read on as we dive into four major security incidents and the trends from last month 👇
Read more about the blog post
View blog post
Quantstamp Announcements
Modular Account: How Audits Can Help Shape Standards And Catalyze Mass Adoption
Quantstamp recently conducted a smart contract audit for Alchemy’s Modular Account, a wallet implementation designed from the ground up for ERC-4337 and ERC-6900 compatibility including two plugins
Read more about the blog post