Ethereum Contract Audit
Demonstrate commitment to security and transparency.
Ethereum is the foundation for countless blockchain projects, making it a prime target for vulnerabilities. At Codeum, we specialize in ensuring your smart contracts are secure, reliable, and optimized for performance.
Ethereum Smart Contract Audit
Ethereum is the foundation for countless blockchain projects, making it a prime target for vulnerabilities. At Codeum, we specialize in ensuring your smart contracts are secure, reliable, and optimized for performance.
Why Choose Codeum for Ethereum Contract Audits?
Ethereum is the most widely used smart contract platform, hosting thousands of DeFi protocols, NFT marketplaces, DAOs, and token contracts. Its maturity means attackers have extensive knowledge of common vulnerability patterns. Our auditors have deep expertise in Solidity, the EVM, and the specific attack vectors that target Ethereum-based applications.
- Comprehensive Analysis: We thoroughly inspect your contract's code to identify potential vulnerabilities and ensure flawless execution.
- Gas Optimization: Maximize efficiency and minimize transaction costs with our performance optimization insights.
- Security-First Approach: Our audits include detailed checks for common and advanced vulnerabilities like reentrancy, overflows, and access control issues.
- Custom Reporting: Receive a detailed audit report outlining issues, recommendations, and fixes to ensure your contract's integrity.
Common Ethereum Smart Contract Vulnerabilities
Ethereum's smart contract ecosystem has been battle-tested through years of high-value transactions and numerous high-profile exploits. Understanding these vulnerabilities is critical to securing your project.
Reentrancy Attacks
One of the most infamous Ethereum vulnerabilities, reentrancy occurs when an external call back into a contract before state changes are finalized. This was the attack vector behind the 2016 DAO hack that drained $60 million.
Integer Overflow/Underflow
Arithmetic operations that exceed variable bounds can lead to unexpected behavior. While Solidity 0.8+ includes built-in checks, legacy contracts and unchecked blocks remain vulnerable.
Flash Loan Attacks
Flash loans allow borrowing massive amounts of capital within a single transaction. Attackers exploit price oracle manipulation and logic flaws to drain protocol funds.
Access Control Flaws
Improperly configured permissions can allow unauthorized users to execute privileged functions, mint tokens, or drain funds. We verify all role-based access patterns.
Front-Running & MEV
Transactions on Ethereum's public mempool are visible before confirmation, enabling sandwich attacks and MEV extraction that can harm your users.
Delegatecall Injection
Improper use of delegatecall can allow attackers to execute arbitrary code in the context of the calling contract, potentially draining all stored assets.
Our Process
Code Analysis
We meticulously examine your contract's codebase to uncover potential vulnerabilities and inefficiencies.
Risk Assessment
Our team identifies and categorizes potential risks, ensuring your contract's security is uncompromised.
Reporting & Fixes
We deliver a comprehensive report and work with your team to address issues, ensuring a seamless launch.
Why Ethereum Projects Need Audits
Ethereum projects often deal with significant financial transactions and sensitive data, making audits essential. By auditing your contracts, you:
- Protect your users' funds and ensure trust in your project.
- Avoid costly errors and downtime caused by vulnerabilities.
- Demonstrate commitment to security and transparency.
- Meet requirements for exchange listings, investor due diligence, and DeFi protocol integrations.
- Reduce the risk of exploits that could result in millions of dollars in losses.
Ethereum Standards We Audit Against
Our audits verify compliance with established Ethereum Improvement Proposals (EIPs) and industry best practices:
ERC-20 Token Standard
We verify that token contracts correctly implement the ERC-20 interface, including transfer, approve, and transferFrom functions, proper event emission, and edge case handling.
ERC-721 & ERC-1155 (NFTs)
For NFT projects, we audit minting logic, royalty enforcement, metadata handling, and marketplace integration to ensure secure digital asset management.
ERC-4626 (Tokenized Vaults)
DeFi vault contracts require specialized review of share calculations, deposit/withdrawal logic, and yield accounting to prevent manipulation.
EIP-712 (Typed Data Signing)
We review off-chain signature implementations for permit functions, meta-transactions, and other signed message patterns to prevent replay attacks.
Ethereum vs Other Chains
While Ethereum remains the dominant smart contract platform, many projects deploy across multiple chains. Codeum provides consistent, high-quality audits across all major networks:
BSC Audit
Binance Smart Chain security review for BEP-20 tokens and DeFi protocols.
Polygon Audit
Polygon PoS and zkEVM smart contract security analysis.
Arbitrum Audit
Layer-2 rollup security for Arbitrum One and Nova.
Avalanche Audit
Avalanche C-Chain and subnet smart contract review.
Solana Audit
Rust and Anchor program security for Solana projects.
Tron Audit
TRC-20 token and TVM smart contract security review.
Frequently Asked Questions
How much does an Ethereum smart contract audit cost?
Audit costs depend on contract complexity, lines of code, and the scope of review. Simple ERC-20 token audits start at a few thousand dollars, while complex DeFi protocols with multiple contracts may cost significantly more. Contact us for a free quote tailored to your project.
How long does an Ethereum audit take?
A standard Ethereum smart contract audit typically takes 5-10 business days. Complex DeFi protocols or multi-contract systems may require 2-4 weeks. We provide a detailed timeline after reviewing your codebase.
What if vulnerabilities are found during the audit?
We provide a detailed report with all findings categorized by severity. Your team can then fix the issues, and we offer a re-review to verify that all vulnerabilities have been properly addressed before deployment.
Do you audit contracts written in Vyper?
Yes, our team has expertise in both Solidity and Vyper. We can audit contracts written in either language and provide the same level of comprehensive security analysis.
Can you audit contracts that have already been deployed?
Yes, we audit both pre-deployment and already-deployed contracts. For deployed contracts, we can identify vulnerabilities and recommend migration strategies or upgrade paths using proxy patterns.
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Take the first step towards a safer, more reliable blockchain project with our expert services.
