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dApp Security Audit

Audit the off-chain part of your decentralized app to ensure safe and secure blockchain interaction

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Why audit dapp?

Protect assets and ensure that everything is as secure as you think

A decentralized application (dApp) is an off-chain component of the system. It is the most overlooked part of the Web3 ecosystem when it comes to security. dApp audit helps projects create and maintain secure integrations with blockchains and protect assets and reputation.

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  • Avoid costly errors

    Security audit is not an additional expense. It actually reduces costs by preventing hacks and leaks from happening.

  • Secure off-chain code

    Do not neglect decentralized application’s security, it is as crucial as smart contract’s security.

  • Increase audience trust

    Secure the whole system and give users the highest level of security possible.

No confidence in private key safety without a dApp audit

  • dApp is a crucial part of the system
  • 100+ dApp exploits for $3.6 billion
  • 8 dApp hacks with > $100 million lost

What projects need dApp audit services?

  • Wallet

Secure wallets that directly or indirectly manage user private keys, sign and send transactions.

  • Cross-Chain Bridges

Protect off-chain bridge oracles from frequent hacks that lead to asset loss.

  • … and everything else!

Well, almost everything. Secure any application that sends or signs transactions, stores private keys or seed phrases, reacts to the blockchain events, indexes the blockchain data, or uses message signing for authentication.

When projects need dApp audit?

  • When preparing for product release
  • Before protocol upgrade
  • Upon noticing any malicious activity
  • After implementing significant changes to the core functionality

Looking forward to sleeping well knowing that your product is free of security flaws?

Fill out the form to get a quote and book our certified specialists

Benefits of Hacken dApp audit

  • Robust Methodology

    Line-by-line review, overview of all found issues, dApp scoring, and detailed recommendations.

  • Transparent Pricing

    A breakdown of the full dApp audit price with no hidden fees.

  • Expertise

    Auditors with a proven record of reviewing decentralized applications.

  • 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.

How dApp audit works?

dApp audit services on agreed terms

  • 1 Audit

    Request a quote

    You submit the request along with required documentation, and our specialists consult you on dApp audit price, scope, timeline

  • 2 Fix it

    dApp Audit Report

    Hacken conducts dApp audit, providing report containing detected vulnerabilities and recommendations for fixing

  • 3 2-5 DAYS

    Remediation check

    Introduce bug fixes and get a remediation check (1 check is covered) to ensure that all changes are correct

  • 4

    Proofed by Hacken

    Your dApp is secure. You receive Proofed by Hacken label and promotion package from Hacken

Reach our team to get an estimate and price

Technical side of dApp audit

Yevhenii Bezuhlyi

Yevhenii Bezuhlyi

Head of Smart Contracts Audits Department

"We have already seen a number of preventable hacks that led to millions lost. It is not enough to audit just the smart contracts - the system is only as secure as its weakest component. By doing the dApp audit with us, you can ensure that the off-chain components will not become that weakest point."

Hacken dApp audit methodology

Hacken dApp Audit methodology is created as an answer to security concerns of the Web3 ecosystem. It describes a 4-stage process that includes an automated tools scan and line-by-line source code review. Our security engineers follow the best practices and latest security developments to ensure the highest quality of the review. We encourage our customers to review our methodology and discuss any concerns and suggestions.

We audit dApps that interact with these and other blockchains

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What you get after the dApp audit?

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    Proofed by Hacken

    Upon completing the dApp security audit, you will become Proofed by Hacken, gaining the ultimate proof of the security of your dApp.

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    Promotion

    If your project meets Hacken’s partnership requirements, we will offer you an extended service package including marketing activities.

    Hacken social media coverage:

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What's included in dApp Audit Report?

  • System overview and executive summary

  • A numerical score based on 4 parameters: security, documentation quality, code quality, architecture quality

  • Overview of every found issue with client-friendly recommendations on how to fix them

Trusted by the crypto community

  • Bobby Ong

    Bobby Ong

    Co-founder, CoinGecko

    "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."

  • Sunny Lu

    Sunny Lu

    CEO, Vechain

    "Hacken founders inherited quality, professionalism, and integrity from Deloitte, their ex-employer."

  • Jason

    Jason

    CEO & Founder of launchpad Embr

    “Unlike our first auditor, Hacken paid attention even to minor details. We managed to bring our security to a new level. Proofed by Hacken is much more than just a technical audit.”

  • Stan

    Stan

    Founder & CTO of ScaleSwap launchpad

    "Hacken is our trusted security vendor and partner. We recommend all projects to apply for security testing by Hacken to address cybersecurity issues and release the code resistant to any types of cyber threats.”

  • Mike Miclea

    Mike Miclea

    Head of Marketing, Cirus Foundation

    "Strong expertise. In our opinion, this team knows everything about cybersecurity."

  • Ruben Guevara

    Ruben Guevara

    DevOps Engineer Security Oriented, PAID Network

    "They've extended their background and clarification on the subject to ensure the project's success."

  • Operations Manager

    Remitano

    "Their team was not only composed of highly skilled researchers and experts but also great communicators".

  • Woo Weber

    Woo Weber

    XT.COM Exchange

    "We saw that Hacken had deep experience in establishing effective communication with clients."

  • Denis Magda

    Denis Magda

    CSO & Developer, Partida Services OÜ

    "P2PB2B team considers Hacken as a top specialist in the field of cybersecurity."

Other Web3 cybersecurity services

Why Hacken?

  • 5

    Years of Expertise

  • 1,070+

    Clients

  • 50+

    Crypto Exchanges

  • 180+

    Partners

  • 17%

    Clients from CMC TOP-300

  • 88+

    Team Members

Security Vendor & Partner for leading Web 3.0 players

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Hacken is a member of top industry organizations

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Leading media write about our contribution to securing Web3

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Let the global crypto community know about your strong security

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.

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