Smart Contract Audit Services

Line-by-line review of your smart contract code by independent auditors matched to your language and chain—catching the logic flaws and access-control issues automated scanners miss.

Line-by-Line ReviewIndependent AuditorsBusiness LogicAccess ControlMulti-ChainLanguage-Matched Experts

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Why Choose HackenProof for Smart Contract Audits?

9+Years Experience

82,000+Verified Security Researchers

85,000+Validated Vulnerability Reports

1,100+Critical Vulnerabilities Detected

500+Projects Secured

$95B+In User Funds Protected

What Does a Smart Contract Audit Cover?

Our curated auditors review your contracts line by line, combining manual analysis with automated tooling to catch the vulnerability classes that matter most:

Reentrancy

Functions that allow an attacker to re-enter and drain funds before state updates complete

Flash loan attacks

Logic that can be manipulated within a single atomic transaction using borrowed capital

Oracle manipulation

Price feeds or external data sources that can be gamed to distort contract behavior

Access control flaws

Missing or misconfigured permission checks on privileged functions

Integer overflow/underflow

Arithmetic errors in unchecked or improperly bounded operations

Business logic errors

Protocol-specific flaws that only a human reviewer familiar with your design can catch

Two Formats, One Goal: A Secure Contract

Both formats give you access to the same pool of vetted, technology-matched auditors. The difference is in privacy, pace, and how your engagement is structured.

Curated Private Smart Contract Audit

A private, invite-only review by a handpicked team of auditors selected specifically for your language and chain. Your codebase stays under NDA, and findings appear in your dashboard from Day 1—so your team can start fixing without waiting for the final report.

Handpicked auditors matched to your stack (Solidity, Rust, Move, etc.)
Full confidentiality — NDA-protected reports, encryption on request
Findings delivered in real time, not just at the end
Fixed price agreed upfront
Starts within 24 hours of your request
Branded final report, ready for due diligence or fundraising

Crowdsourced Smart Contract Audit

Open your contract to HackenProof's global community of 82,000+ verified researchers. More reviewers, more attack angles, and a model built for finding the edge cases a single team might miss—in Traditional (fixed budget) or Conditional (pay-per-finding) format.

Access to 82,000+ verified researchers across every major chain/language
Broader vulnerability coverage from diverse methodologies
Traditional or Conditional budget structure—your choice
Triage and validation included, so you only see confirmed findings
Works for both private and public codebases
Branded final report included

What You Get With Each Format

Regardless of format, every smart contract audit is scoped to your specific language and chain—but each format has its own strengths worth knowing upfront.

Curated Private

Feature Highlights

Technology-matched expertise
Auditors are selected specifically for your contract language (Solidity, Rust, Move, Cairo) rather than assigned from a general pool
Day-1 visibility
Confirmed findings hit your dashboard as they're validated, not bundled into a single end-of-audit report
Confidential by default
Ideal for pre-launch contracts, unaudited forks, or any codebase you're not ready to expose publicly
Predictable cost
One fixed quote for the full engagement, agreed before work starts

Crowdsourced

Feature Highlights

Technology-matched expertise
Many researchers approaching the same contract from different angles, which tends to surface the business-logic edge cases a single reviewer misses
Budget flexibility
Traditional format for maximum researcher motivation and coverage, or Conditional format if you'd rather pay only for confirmed findings
Public-code friendly
Well suited to contracts that are already open source or about to be
Scales with complexity
Larger or multi-contract protocols benefit from more eyes without a linear cost increase

Which Languages and Chains Does HackenProof Audit?

We match you with auditors experienced in your specific stack—not generalists learning your language on your dime.

Web3 & Blockchain

Rust

Move

Vyper

Clarity

Haskel

Motoko

Cairo

Solidity

Michelson

Scrypto

Tact

Daml

C++

Java

Python

Swift

And more

Web & Mobile

Web Applications

Mobile Apps

APIs

Platforms

Infrastructure

How Our Smart Contract Audit Process Works

Scoping

You share your repo, docs, and deployment target; we define coverage and timeline

Manual review

Our curated auditors read every line against known vulnerability classes and your specific business logic

Automated analysis

Static analysis and fuzzing tools run in parallel to catch what manual review might miss

Report delivery

Findings ranked by severity, each with a proof of concept and a remediation recommendation

Retest

Once fixes are shipped, we verify each finding is resolved before sign-off

How Much Does a Smart Contract Audit Cost?

Cost depends on codebase size, protocol complexity, and how many chains or languages are in scope—a single-contract token audit and a multi-chain DeFi protocol are very different engagements. Request a scoped quote, and we'll match you with auditors and a price range based on your actual codebase, not a flat-rate estimate that doesn't reflect the work.

Our Customers

This was the biggest audit in General Tensor's history, so we took our time picking a partner. We went with HackenProof partly for the contest format, getting that many world-class smart contract auditors on our code at once is hard to beat. But, what won us over was how they operate. Straightforward, transparent, and always willing to work with us and meet our needs. We trust them with the future cohort of 0xM traders.

Jordan KotsopoulosCo-founder General Tensor, 0xMarkets

HackenProof cut our overhead significantly. Centralized report management, consistent triage across all submissions, duplicates filtered automatically. Their team adapts quickly — which matters a lot when AI is reshaping the threat landscape.

Anton AstafievCTO

HackenProof is ADI Foundation's trusted security provider. From audits to Dual Defense and bug bounty, their skilled community covers it all. What I appreciate most is how quickly the company adapts to where the market is heading, including the rise of AI-driven threats. That kind of forward-thinking approach lets us stay secure without slowing down — and focus on what we're here to do: grow ADI Foundation.

Herman StohniievCTO

HackenProof is a leading specialist bug bounty platform for crowd-sourced security testing of blockchain protocols and smart contracts. I look forward to working with their team and the whitehat hacking community to take the security of the Avalanche ecosystem to the next level.

Dr. Arnold YauSecurity Engineer

Security is a continuous journey, not a one-time checkpoint. The successful completion of this audit marks a significant milestone in our ongoing efforts to ensure the highest security standards. Inspired by the insights from the HackenProof team, we are more committed than ever to maintaining an active and robust security posture through continuous assessments.

We value HackenProof's role in enhancing our core security through their bug bounty program, which has streamlined identifying and managing vulnerabilities on KuCoin. This collaboration has significantly bolstered our platform's defense mechanisms, reflecting HackenProof's commitment to our security needs.

The KuCoin Team

Jordan KotsopoulosCo-founder General Tensor, 0xMarkets

Anton AstafievCTO

Herman StohniievCTO

Dr. Arnold YauSecurity Engineer

The KuCoin Team

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Smart Contract Audit Services

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Why Choose HackenProof for Smart Contract Audits?