Secure Code Review
Conduct a comprehensive audit of your decentralized application to ensure safe and secure interaction with the blockchain network.
- 2,163
- smart contract audits completed
- 16,695
- vulnerabilities discovered
- 60+
- top-class engineers
- 200+
- ecosystem partners
Protect assets and ensure that your decentralized application is as secure as you think.
Prevent expensive mistakes
A security audit is not an added expense, but rather a cost-saving measure that can help prevent hacks and leaks, ultimately reducing potential costs associated with security breaches.
Protect sensitive data
Our security standards prioritize the protection of sensitive data, providing you with peace of mind regarding your private key safety.
Gain users' trust
Build trust with users by ensuring complete system security and keeping up-to-date with the latest security trends.
Detect the undetected to prevent losses
- $5.9B
total value hacked in DeFi
- 12+
dApps hacked for $100M+
- $4.0B
stolen from crypto projects in 2025
What projects need dApp audit services?
Wallets are where users store their digital assets, such as cryptocurrency, and they can be particularly vulnerable to security breaches. Secure wallet is a critical part of interacting with blockchain networks, and a dApp audit can play a vital role in ensuring that your wallet is secure.
Cross-chain bridges enable the transfer of assets across different blockchains, which presents a unique set of security challenges that must be properly addressed. Securing cross-chain bridges with dApp audit is critical to ensure the safety and reliability of these systems.
... and everything else!
Well, almost everything. Secure any application that performs cross-chain operations, has custody over sensitive information, reacts to the blockchain events, or uses message signing for authentication.
When projects need dApp audit?
When preparing for product release
Upon noticing any malicious activities
Before blockchain protocol upgrade
After implementing significant changes to the core dApp functionality
Benefits of Hacken dApp audit
Robust Methodology
Built upon industry-accepted core security principles and is specifically tailored to review applications that interact with blockchain networks.
Transparent Pricing
A breakdown of the full dApp audit price with no hidden fees.
Trust
Trusted by leading blockchain organizations and major Web3 projects.
Human Face
Credible auditor with public industry-recognized leaders.
Caring
A truly caring team with a focus on client outcomes.
Expertise
Auditors with a proven record of reviewing decentralized applications.
How does it work?
You submit the required documentation and get the estimation of the audit scope, timeline, and price.
3 - 10 days
Get a quote
dApp Audit Report
Remediation check
Certification and promotion
On average, it takes from 10 to 20 business days to complete the audit.
What's included in dApp audit report?
A list of issues and vulnerabilities that were found during the review with recommendations on how to address them.
Numerical score for each metric for security, code and documentation quality with the overall system score calculated.
An overview of the system created by the security engineers.
Clients say
"CoinGecko is excited about working with Hacken for our bug bounty program. We are well aware of the dangers that vulnerabilities may present to our users and this is one way where we take proactive steps together with Hacken to ensure and improve the safety, security, and integrity of our platform."
Booby Ong
Co-founder, CoinGecko
"Hacken's work to analyze our recent Proof of Reserves update is a great example of the power of community feedback."
Binance
Binance
"We highly recommend Hacken to anyone in need of Web3 security services and a reliable partner for their blockchain initiatives. Their team's professionalism and expertise in the security space have helped us to secure an ecosystem for our users."
Isha Tyagi
Technical Program Manager
"Hacken has provided mature security audits with a proactive approach, prompt communication and valuable security recommendations. We appreciate our partnership and would recommend collaboration with Hacken to anyone keen to strengthen their code's resilience."
Aurora
Aurora
"Internal stakeholders are impressed with the work Hacken has completed so far. An organized team, they've managed the project well, never letting the six-hour time difference get in the way of productivity. Customers can expect an experienced and professional partner."
Tony Wei
CTO, Gate.io
"Hacken founders inherited quality, professionalism, and integrity from Deloitte, their ex-employer."
Sunny Lu
CEO, Vechain
"Hacken's meticulous approach to the audit process ensured that our smart contracts were reviewed comprehensively. Their professionalism and dedication were evident throughout the audit."
EBSI
Ebsi
"Hacken has provided highly professional audits with outstanding quality. We are delighted to work with such a well-known and trusted security vendor."
Jason, Seong Ho Lee
DeFi Architect at Wemade
"As our security partner, Hacken's team of experts is a pleasure to work with. Their persistence in making recommendations and solving problems is impressive."
Qevan Guo
Co-founder of IoTeX
"Entrusting Hacken with a bug bounty program was the right call for us. They took care of all the routine processes and helped us make our products more secure."
Status
Crypto Wallet
"They've extended their background and clarification on the subject to ensure the project's success."
Ruben Guevara
DevOps Engineer Security Oriented, PAID Network
FAQ
What is a dApp?
dApp (Decentralized Application) is an application that interacts with a blockchain in one form or another (e.g. calls or reads from Smart Contracts; blockchain indexing, etc.). Usually, it helps with achieving something that is not possible with just Smart Contracts (like random), or for indexing some information that is not easily accessible through the blockchain directly (transaction history, custom Smart Contracts events, etc.). Ensure secure blockchain interaction with dApp audit. dApps, such as wallets and cross-chain bridges, are connected to the blockchain. Most projects only audit smart contracts paying no attention to off-chain vulnerabilities. Hacken’s dApp audit is the best available choice for projects that want a high level of security. Focused on the off-chain code review, our dApp audit prevents the leakage of a private key and ensures a secure interaction of your dApp with the protocol.What coding languages are dApps based on?
The dApp code can be written in any programming language. Most dApps are written in Java, Python, JavaScript, C#, and Rust.What is the difference between a dApp and a smart contract?
dApp is not a Smart Contract. This is a normal application (client – something you can see with your eyes and interact with, or server – something that is hidden behind the UI) that interacts with one or several blockchains. It is not deployed on the blockchain, it deploys like a regular Web 2.0 application; the logic can be changed in the future after the deployment. dApps use smart contracts to authorize transactions and interact with blockchain. Smart contract code is not the only code of a dApp. dApps also have off-chain code that doesn’t interact with the blockchain. This off-chain code is the target of the dApp audit.What are smart contracts used by dApps?
dApps are deployed on blockchain and use smart contracts for app logic. Smart contracts are digital contracts that automatically execute transactions once predetermined conditions are met.What are the security challenges of dApp? How secure are dApps?
The most common exploits in the dApp audit environment are overconfidence in a node (or node provider), failure to account for blockchain branching out, incorrect validation of ENS records, weak authentication via message signing, unsafe private key storage, XSS/SQL injections from the blockchain data, misuse of checksum addresses, blockchain data inconsistency, incorrect integration with a smart contract and/or blockchain platform, usage of wrong data types, application architecture, repository consistency, code style consistency, and deprecated, vulnerable, or outdated Web3 libraries.What are the dApp security improvement practices?
Deploying a dApp to the blockchain is different from traditional app development because making any changes after is difficult. Therefore, it’s vital to ensure security and the absence of any bugs before the launch. dApp security improvement practices are smart contract audit for the on-chain code and dApp audit for the off-chain code. The dApp security audit performed by Hacken experts covers both the back-end and front-end of the decentralized app. A comprehensive dApp audit by a team of professionals will help protect your financial interests by identifying and removing all vulnerabilities and exploits. dApp Audit by Hacken will help your project expand the possibilities of decentralized networks in finance, arts & collectibles, gaming and technology, and other segments. With a dApp audit, you can ensure that all blockchain superpowers, such as built-in payments, secure on-chain data, and user credentials, work as intended.Can I conduct a dApp audit myself?
We encourage projects to use their internal resources to review their dApps. Internal audits can identify vulnerabilities. However, there is extra value to a professional dApp audit. A third-party auditing team offers an external call. This is the only way to receive an authoritative opinion and informed recommendations on your code from the outside. On top of that, the internal team may lack the necessary expertise or time to review dApp comprehensively. External audit firms have teams specializing in security research and dApp vulnerability assessment.Will I get recommendations on how to address detected issues after an audit?
Hacken specialists will provide you with a report containing step-by-step client-friendly recommendations on how to eliminate detected issues.What is the duration of a dApp audit?
The duration of a dApp contract audit varies depending on the audit scope and complexity. Generally, the audit duration is specified before the process starts so that a customer is aware of each stage in the process.
