Smart Contract Security Audits
Independent smart contract audit service for DeFi, tokens, and dApps. We combine manual analysis and automated checks, provide an audit report with actionable fixes, and retest remediation for safer deployments and upgrades.
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- 20+Years of combined experience
- 150+Blockchain companies audited
- 280+Security threats detected
Why Smart Contract Audits Matter
A smart contract audit is a structured security review of on-chain code and protocol logic. The goal is to reduce the risk of exploits, loss of funds, and governance abuse. An audit also helps you prepare for listings, fundraising, and external due diligence.
We audit contracts for DeFi protocols, token launches, staking systems, marketplaces, and governance modules. The result is practical: a clear report, prioritized fixes, and a retest to confirm remediation.
Smart Contract Security, Done Properly
Smart contract incidents can lead to severe losses, halted launches, and long-term reputational damage. An audit helps you detect security issues early, fix them correctly, and communicate your remediation status to stakeholders.
What you get from an audit:
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Prevent smart contract errors
Auditing your smart contract while in a development stage or Beta stage can prevent the exploitation of security flaws.
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Improve your smart contract code
While the audit focuses mostly on security aspects, the smart contract audit report also covers bugs and logic issues.
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Build trust with your audience
Conducting a smart contract security audits can positively impact your reputation and increase trust in your company.
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Obtain a detailed, in-depth audit report
Get a detailed report including an executive summary, details on security vulnerabilities, and mitigation guidance.
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Get professional guidance to fix issues
Our team will guide you on the best path forward to fix the vulnerabilities in a cost and time-efficient manner.
When You Should Audit
Even the most experienced developers can miss subtle vulnerabilities. To protect your user assets and protocol reputation, an external review is essential in the following scenarios:
- Before mainnet deployment or a major upgrade;
- Before an exchange listing, fundraising, or institutional review;
- After adding external integrations (oracles, bridges, DEX routers);
- When you publish or change your SDK used to interact with your contracts;
- If your protocol holds assets, collateral, or controls user funds;
- When admin roles, upgrades, or emergency controls can be abused;
- If token incentives, fees, or rewards can be manipulated.
What We Audit
Our smart contract security audits focuses on both code-level flaws and protocol-level risks.
Code security (implementation risks)
- Access control, roles, and privilege boundaries;
- Reentrancy and external call safety;
- Input validation, state consistency, and invariants;
- Arithmetic issues, rounding, and precision loss;
- Signature verification, replay protection, and nonce handling;
- Upgradeability patterns (proxies, initialization, admin powers);
- Token standard edge cases (ERC-20, ERC-721, ERC-1155);
- Event correctness and critical state transitions;
- Denial-of-service patterns and gas griefing;
- Dependency and library misuse.
Protocol and economic risks (design risks)
- Incentive abuse, reward manipulation, and fee extraction paths;
- Oracle and price manipulation, liquidation edge cases;
- MEV exposure, front-running, and sandwich scenarios;
- Governance capture, timelocks, and unsafe parameter control;
- Cross-contract trust boundaries and integration failure modes;
- Operational risks tied to multisigs, keepers, and privileged bots.
AI Smart Contract Pre-Audit
We are piloting AI Smart Contract Pre-Audit as a lightweight way to get an initial review of your Solidity smart contract before a full manual audit. While the product is in testing, it is available as a free smart contract audit: upload your Solidity code on the dedicated page, and our AI model will analyze it and generate a detailed report with security findings, logic warnings, and practical remediation guidance.
This pre-audit works best for early QA, iterations, and release preparation. For complex protocols, high-value deployments, or critical integrations, we recommend following it with a manual audit and retesting.
Smart contract audits, tailored to your needs
We combine deep manual review with proven security tooling. Manual analysis focuses on business logic, permissions, invariants, and integration boundaries. Automated checks help detect common vulnerability patterns and support validation of edge cases.
Every product has different needs. Following an intro assessment, our seasoned team of smart contract auditors provides clear steps to execute the audit in the most frictionless way possible.
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1
Intro assessment
A 1:1 meeting to determine the audit scope and timeline. Access required documentation and get a quote.
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Audit report delivery
Our specialists deliver a comprehensive smart contract audit report outlining key findings and recommended fixes.
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Follow-up evaluation
Following your revision and possible correction of the smart contract, our team will double-check it.
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Certification
Legal Kornet issues an international smart contract security audits certificate based on the results.
Our services
Automated smart contract audits
For automated and semi-automated code checks, we rely on state-of-the-art smart contract security analysis tools such as Mythril, Oyente, Manticore, Solgraph, Semgrep, and Slither.
Manual smart contract audits
Our auditors execute line-by-line reviews to ensure every single piece of code gets the attention it ultimately deserves.
White paper review
We put your white paper to the test with a full audit by our blockchain experts, exposing business logic vulnerabilities and testing the mathematical models of your tokenomics.
Cross-chain auditing
At the moment, we offer smart contract auditing services for Solidity, Ethereum (EVM) and Solana. We are constantly working on adding support for new blockchains.
New to smart contracts audits? Read our F.A.Q.
A smart contract is commonplace in the DeFi ecosystem. In fact, if you’ve invested in a blockchain project before, there’s a high chance that the smart contract review influenced your decision. Typically, these contracts are meant to execute an agreement without needing any party’s time and involvement.
The setup of a smart contract is fairly simple: there’s a program on the blockchain that only runs or executes an action when the conditions are met. So, once party A fulfills its part of the agreement, the program runs automatically, without the need for party B’s involvement or approval. As a result, smart contracts hold the capacity to save all parties involved a ton of time.
Let’s say that if party A fulfills a service or delivers a product, party B releases the payment on the blockchain. And thanks to smart contracts, instead of having to confirm if the product is delivered and send the payment manually, this process is automated as soon as the conditions of the smart contract are met.
However, if the contract isn’t written out properly, both parties can run into some trouble along the way, and that’s why you need a smart contract audit before proceeding further.
While smart contracts are secure since they are on the blockchain, they don’t come without any vulnerabilities. These vulnerabilities are the reason you need to properly audit a smart contract to detect any lapses in the code to ensure that you, your partners, and all other parties involved are safe.
The first vulnerability is the wrong execution of certain codes. For example, small typos in the code can have significant consequences. If developers don’t catch these mistakes before the contract goes live, then it’s only a matter of time before something goes wrong.
On top of that, naming issues and mishandling exceptions can leave the code very vulnerable. While these mistakes and vulnerabilities are common, a high-quality smart contract audit can easily fix them, which is why it’s necessary before putting a smart contract on the blockchain.
Some other common smart contract vulnerabilities include:
- Using the block hash function;
- Too much dependence on execution order;
- Wrong calculations of token amounts;
- Reentrancy.
One of the key benefits of getting a smart contract audit is getting an expert team to examine your contract and potential vulnerabilities. From there, they submit a report on these vulnerabilities with recommendations for fixing them.
Some companies only provide reports with no proposed solutions to any of the issues they found. With Legal Kornet, you get proper advice and guidance on how to fix security vulnerabilities that have been found during the initial audit.
Once you make the corrections, we will look at the contract again to catch any other vulnerabilities before it goes live. That way, when you place your smart contract on the blockchain, you know that it’s free from issues and will run as intended.
Smart contract audits are a necessary step in writing and executing a smart contract. In its most basic form, a smart contract is an in-depth review of the contract’s code. Once the code is reviewed, the auditors send their comments to the organization running the contract so that they can make the appropriate corrections before putting the contract on the blockchain.
This ensures that no stone was left unturned when coding the smart contract and that all aspects of the smart contract are fully operational. Smart contract audits are typically divided in four phases, which include:
- Initial Analysis.
During this phase, the auditing team closely looks at the contract. This is the stage where they detect anomalies or aspects within the smart contract that need to be reviewed before the contract goes live on the blockchain. - Presentation.
After analyzing the smart contract in depth, the auditing team will then present their findings and comments to the organization responsible for the smart contract. This is the stage where the organization responsible for the contract will learn about what needs to be reviewed and fixed before any further steps are taken. - Actions.
After fully grasping what needs to be done before the contract can go live on the blockchain, the organization in charge can then make the necessary changes as per the recommendations of the auditing team. - Final Analysis.
Once all the corrections are made, the reviewing team must look at the smart contract again. That way, they find any other potential issues and let the client know before they finalize the contract and put it on the blockchain.
Theoretically, it’s possible to perform a smart contract audit yourself. However, performing the audit in-house can be very costly and take a lot of time. On top of that, there may be some issues and vulnerabilities that you won’t notice due to your lack of experience or understanding of what goes into a smart contract audit.
This is why hiring a qualified, and dedicated auditing team is necessary before running a smart contract. Legal Kornet ensures that no stone is left unturned and that once the smart contract goes through the hands and eyes of our experts, the smart contract will operate exactly as it should.
Yes. Early reviews can catch architectural issues that are expensive to fix later. Many teams use a staged approach: early design review, then a full pre-launch audit.
A code repository (or shareable archive), deployment details, architecture notes, and any documentation that describes intended behavior and roles.
Audits are an essential part of running a smart contract. This is because smart contracts usually run on codes provided by GitHub. And when coding, it’s easy to miss out on certain key details that can not only impact the effectiveness of the smart contract but also lead to more serious consequences.
Besides, investors won’t take a smart contract seriously unless it’s been audited. An audit ensures that the contract has been properly coded and there are no lapses. That way, they can rest assured that the contract will fulfill itself once they accomplish their end of the deal.
Here are some of the additional benefits of conducting an audit of your smart contract:
- Checking Gas Efficiency.
Certain networks like Ethereum are notorious for their high gas fees. And sometimes, smart contracts will perform various transactions (that are usually unnecessary) before meeting their ideal goal. So, to bring down transaction costs, during the audit, we will perform a comprehensive review of the smart contract to ensure that it is as gas efficient as possible. - Finding Platform Flaws.
While keeping gas costs to a minimum is important, the main reason behind smart contract audits is to determine the security of the smart contract. During our audit, using our vast knowledge and experience, we’ll ensure that there are no flaws or cracks in the contract that can have significant consequences further down the line. Some of the flaws we focus on are badly structured code, integer under and overflows, reentrancy issues, and more. - Determining Security Vulnerabilities.
While the blockchain is secure, there are some instances where a DDoS attack can target smart contracts. Our smart contract audit involves a deep dive into any potential vulnerabilities of a contract to ensure that every party is safe when entering the contract.
No audit can guarantee absolute security. An audit reduces risk by identifying vulnerabilities and unsafe assumptions, and by validating fixes through retesting.
The cost of a smart contract audit can vary depending on several factors. While these audits are usually done for large contracts that involve millions in cryptocurrency, they can also be performed on smaller contracts. On average, Legal Kornet smart contract security audits fall in the $5000-$9000 range. To get a tailored quote, get in touch now.
However, rest assured that these audits are worthwhile. When working with smart contracts, there is usually a lot of currency at stake. So, investing in an audit, while it may cost you a fair amount up front, can end up protecting your contract from vulnerabilities that could lead to larger losses down the line.
