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.
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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

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

When developing our Plasma MVP Implementation, we wanted to have strong security guarantees. As a scalability solution, our plasma implementations could potentially be handling massive transaction volumes. Quantstamp has audited large-scale, mission-critical initatives in the past, and working with Quantstamp was an obvious decision to make.

Vanessa Chatikavanij CEO at OmiseGo

Quantstamp ensured that our contracts met the highest standards of security through their excellent audit process. They worked hand in hand with our engineers to make sure our smart contracts were as safe as can be and their recommendations helped improve the quality of our code.

Omri Ross Chief Blockchain Scientist at eToro

Quantstamp’s audit process was comprehensive and streamlined. They provided thorough feedback in addition to an audit certificate and auditor’s opinion letter that gave our stakeholders confidence in our smart contracts.

Noah Thorp Vice President of Engineering at Sharespost

Quantstamp was great to work with. They were professional and efficient when working with us to make sure that our production contracts were secure. Their comprehensive analysis resulted in an easy to use audit report that showed where things could be improved and ultimately gave us confidence in our smart contracts.

Mick Hagen Founder & CEO at Mainframe
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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

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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.
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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 👇
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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
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