Ironclad Blockchain Security Audits
Protect your assets, build user trust, and launch with confidence. We find the critical vulnerabilities that automated scanners miss.
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Why Partner with Errna for Security Audits?
In the high-stakes world of Web3, a security audit is non-negotiable. It's your first line of defense and your strongest statement of trust. We go beyond automated scans to provide a true security partnership that protects your protocol, your users, and your reputation.
AI-Augmented Analysis
We leverage proprietary AI tools to run thousands of exploit simulations, uncovering complex vulnerabilities and logical flaws that manual reviews and standard scanners often miss. This gives you deeper, faster, and more comprehensive code coverage.
Full-Stack Auditing
Your security is only as strong as its weakest link. We audit your entire ecosystem: from the core blockchain protocol (L1/L2) and smart contracts to your dApp front-end, off-chain infrastructure, and wallet integrations.
Actionable Reporting
You won't get a generic, jargon-filled PDF. Our reports are clear, prioritized, and actionable, with detailed vulnerability descriptions, risk assessments, and concrete code recommendations your developers can implement immediately.
CMMI 5 Process Maturity
Our audit methodology is built on decades of enterprise software experience and certified at CMMI Level 5. This ensures a repeatable, rigorous, and transparent process from discovery to remediation, giving you verifiable quality and peace of mind.
Hacker Mindset
Our auditors are more than just developers; they are ethical hackers and security researchers who live and breathe threat modeling. We don't just check for bugs; we actively try to break your system, simulating the creativity and persistence of a real-world attacker.
A True Partnership
An audit isn't a transaction; it's the start of a relationship. We provide dedicated post-audit support, including free verification of fixes and direct access to our auditors to ensure vulnerabilities are properly remediated before you go live.
Economic Exploit Focus
Many audits miss the biggest DeFi threats: economic exploits. We specialize in analyzing your protocol for risks like flash loan attacks, oracle manipulation, and tokenomic design flaws that could drain your treasury or crash your token's value.
20+ Years of Experience
As the blockchain division of Cyber Infrastructure (CIS), founded in 2003, we bring unparalleled experience in enterprise-grade security and software development. We understand how to build and secure complex, mission-critical systems.
Continuous Security
Security isn't a one-time event. We offer retainer-based services for continuous monitoring and periodic re-audits as your protocol evolves, ensuring you remain secure long after your initial launch.
Comprehensive Blockchain Security Services
We provide end-to-end security solutions tailored to the unique challenges of the decentralized world. Whether you're launching a new token or running a complex Layer-2 network, we have the expertise to secure your vision.
Smart Contract Audits
The bedrock of Web3 security. We perform an exhaustive line-by-line analysis of your Solidity, Rust, or other smart contract code to identify vulnerabilities like re-entrancy, integer overflows, and improper access control before they can be exploited on-chain.
- Static, dynamic, and formal verification methods.
- Gas optimization analysis to reduce user costs.
- Checks against the latest attack vectors and SWC registry.
DeFi Protocol Audits
We go beyond the contract code to audit the entire DeFi protocol's logic and economic incentives. Our goal is to protect your Total Value Locked (TVL) by identifying and mitigating risks from flash loan attacks, oracle manipulation, and other complex financial exploits.
- In-depth analysis of lending, staking, and AMM logic.
- Simulation of various market conditions and attack scenarios.
- Review of governance mechanisms and admin key security.
L1 & L2 Blockchain Audits
For teams building the foundational infrastructure of Web3, we provide deep-dive audits of the core protocol. This includes analyzing the consensus mechanism, cryptography, peer-to-peer networking, and virtual machine for design flaws or implementation bugs that could compromise the entire network.
- Review of cryptographic primitives and their implementation.
- Analysis of resistance to network-level attacks (e.g., 51% attacks).
- Verification of node software and client implementations.
dApp Security Audits
A comprehensive review of your entire decentralized application, including front-end code, back-end services, and smart contract interactions. We ensure that your user interface is secure and that off-chain components don't introduce new vulnerabilities to your on-chain logic.
- Testing for front-end vulnerabilities like phishing and data exposure.
- Security review of API endpoints and off-chain data storage.
- Ensuring secure interaction between the UI and smart contracts.
Wallet Security Audits
We audit crypto wallets (browser, mobile, hardware) to ensure the security of key generation, storage, and transaction signing processes. Our audit helps prevent the loss of user funds due to software bugs or insecure implementation of cryptographic standards.
- Analysis of private key management and entropy sources.
- Review of code for vulnerabilities that could leak sensitive data.
- Verification of compliance with standards like BIP39/BIP44.
Web3 Penetration Testing
An active, adversarial approach to security. Our ethical hackers simulate real-world attacks on your live or testnet environment to identify exploitable vulnerabilities in your dApp, infrastructure, and smart contracts before malicious actors do.
- Simulated attacks on both on-chain and off-chain components.
- Testing for business logic flaws and unauthorized access.
- Provides a realistic assessment of your system's resilience.
Economic Model Analysis & Simulation
We analyze and stress-test your project's tokenomics and economic incentive structures. By simulating various user behaviors and market scenarios, we help you identify potential death spirals, centralization risks, or incentive misalignments that could threaten your protocol's long-term viability.
- Agent-based modeling to simulate complex economic interactions.
- Analysis of token distribution, inflation/deflation mechanics.
- Assessment of the protocol's resilience to economic manipulation.
More Specialized Security Services
Our expertise covers the full spectrum of Web3 security needs.
- Crypto Exchange Audits: Securing trading engines, hot/cold wallets, and user data.
- NFT & Marketplace Audits: Protecting against minting exploits and ownership vulnerabilities.
- Token Contract Audits: Verifying ERC-20, ERC-721, and other token standards.
- Formal Verification: Mathematically proving the correctness of critical smart contract logic.
- Code Review & Best Practices: Improving code quality and maintainability.
- Incident Response Planning: Preparing your team for a security breach with a clear action plan.
- Continuous Security Monitoring: Real-time threat detection for your live protocol.
- Compliance Audits: Ensuring your contracts and processes align with regulatory needs.
Our Rigorous, CMMI 5 Certified Audit Process
We combine cutting-edge technology with deep human expertise in a structured, transparent process designed to provide maximum security coverage and deliver actionable results.
Discovery & Scoping
We begin with a deep dive into your project's architecture, business logic, and security goals. This allows us to tailor the audit scope and threat model specifically to your protocol's unique risks.
AI-Powered Automated Analysis
Our proprietary AI and a suite of industry-leading tools perform a comprehensive scan of your codebase, identifying common vulnerabilities, code quality issues, and potential attack vectors with high speed and accuracy.
In-Depth Manual Review
This is where our experts shine. We conduct a meticulous line-by-line review of your code, focusing on complex business logic, economic incentives, and novel vulnerabilities that automated tools simply cannot detect.
Collaborative Reporting
We compile our findings into a clear, actionable report. Each vulnerability is detailed with a severity rating, potential impact, and specific code-level recommendations for remediation. We review this report with your team to ensure full understanding.
Remediation & Verification
After your team implements the fixes, we conduct a thorough verification to confirm that each vulnerability has been effectively and securely resolved. This crucial step ensures no new issues were introduced during remediation.
Final Report & Certification
Upon successful remediation, we issue the final, public-facing audit report and a certificate of security. This serves as a powerful signal of trust and security to your users, investors, and the wider community.
Proven Results in Securing Web3 Innovation
Securing a $50M TVL DeFi Lending Protocol
Client Overview
A rapidly growing DeFi protocol offering decentralized lending and borrowing services. They approached us for a pre-launch audit to ensure the safety of user funds and build trust before their mainnet launch, which aimed to attract over $50 million in initial liquidity.
The Problem
The protocol's complex logic for interest rate calculation, liquidations, and collateral management created a large attack surface. The founding team knew that a single vulnerability could lead to a catastrophic loss of all user funds, destroying their reputation before they even began.
Key Challenges
- Preventing flash loan-based price oracle manipulation.
- Ensuring the liquidation engine was both accurate and resilient to exploits.
- Securing admin functions and privileged roles.
- Verifying complex mathematical calculations for interest accrual.
Our Solution
We conducted a multi-faceted audit combining AI-driven analysis with deep manual review from our DeFi experts.
- Deployed AI simulation tools to model various flash loan attack scenarios.
- Manually reviewed the entire liquidation and collateralization logic for economic soundness.
- Identified a critical re-entrancy vulnerability in the withdrawal function.
- Provided concrete recommendations for using a time-weighted average price (TWAP) oracle.
Fixing a Critical Minting Exploit in an NFT Marketplace
Client Overview
An innovative NFT marketplace focused on generative art. They needed a comprehensive audit of their new ERC-721A-based minting contract and off-chain signature validation system before a high-profile artist drop.
The Problem
The marketplace's unique minting process allowed users to mint multiple NFTs in a single transaction to save gas. However, this complexity, combined with an off-chain allowlist system, introduced risks of replay attacks and unauthorized minting, which could devalue the entire collection.
Key Challenges
- Ensuring the integrity of the off-chain signature verification for allowlist minting.
- Preventing users from bypassing the maximum mint-per-wallet limit.
- Securing the contract's ownership and royalty payment functions.
- Optimizing gas costs for the batch minting function.
Our Solution
Our audit focused on the intersection of on-chain and off-chain logic, a common point of failure in Web3 applications.
- Identified a flaw in the nonce implementation that allowed for signature replay attacks.
- Discovered a logic error that allowed users to mint more than the specified limit in a single batch.
- Recommended improvements to the royalty distribution mechanism to make it more robust.
- Provided gas optimization techniques that reduced minting costs by an average of 15%.
Auditing an Enterprise Supply Chain Blockchain
Client Overview
A Fortune 500 logistics company implementing a private, permissioned blockchain (based on Hyperledger Fabric) to track high-value goods from manufacturing to delivery. They required an audit to ensure data integrity, privacy, and system resilience.
The Problem
The system needed to provide a tamper-proof record of an asset's journey while ensuring that sensitive commercial data was only visible to authorized participants in the supply chain. A flaw in the access control logic or chaincode could lead to data leaks or fraudulent entries.
Key Challenges
- Verifying the complex access control lists (ACLs) and channel policies.
- Auditing the chaincode (smart contracts) for bugs and security holes.
- Assessing the security of the network configuration and peer-to-peer communication.
- Ensuring data privacy between competing participants on the network.
Our Solution
Our enterprise blockchain experts conducted a holistic audit of the entire Hyperledger Fabric implementation.
- Performed a thorough review of the network's channel configuration and endorsement policies.
- Discovered a critical flaw in the chaincode that could allow a malicious participant to tamper with shipment data.
- Recommended best practices for managing user identities and certificates within the network.
- Provided a roadmap for enhancing data privacy using private data collections.
Technologies, Languages & Tools We Master
Our auditors possess deep expertise across the entire Web3 technology stack, from low-level languages to the most advanced security analysis tools.
Audit & Analysis Toolkit
We utilize a powerful combination of industry-standard and proprietary tools for static analysis, dynamic analysis, formal verification, and fuzzing, including Slither, Mythril, Securify, Echidna, and our own AI-driven simulation engines.
Meet Our Lead Security Auditors
Our team is composed of seasoned security researchers, ethical hackers, and blockchain architects with proven experience in securing multi-million dollar protocols.
Joseph A.
Expert Cybersecurity & Software Engineering
With a background in enterprise security and cryptography, Joseph specializes in L1/L2 protocol audits and complex cryptographic implementations. He leads our penetration testing division.
Akeel Q.
Certified AI & ML Specialist
Akeel is the architect behind our AI-augmented analysis tools. His expertise in machine learning and formal verification allows us to detect novel vulnerabilities and model complex economic attack vectors.
Prachi D.
Certified Cloud & IoT Solutions Expert
Prachi leads our DeFi auditing team. A former DeFi developer herself, she has an intuitive understanding of economic exploits and has personally identified multiple critical vulnerabilities in major protocols.
What Our Clients Say
"The audit from Errna was incredibly thorough. They found a critical vulnerability in our staking contract that could have been disastrous. Their report was clear, and the team was responsive during the remediation process. We launched with total confidence thanks to them."
CEO, ScaleUp DeFi
"As a CTO, I appreciated the technical depth of Errna's team. They didn't just run a scanner; they understood our protocol's unique logic and identified subtle economic risks we hadn't considered. It felt like having a true security partner, not just a vendor."
CTO, Innovate Protocol
Flexible Engagement Models
We offer flexible engagement models to suit your project's specific needs, budget, and timeline.
Fixed-Price Audit
Ideal for well-defined scopes like a set of smart contracts. We provide a fixed quote and timeline after an initial discovery phase, giving you budget certainty for your pre-launch audit.
Time & Materials
Best for complex, evolving projects or ongoing security research. This model provides flexibility, allowing you to leverage our expertise as needed for new features or exploratory security work.
Dedicated Security Retainer
Your long-term security partner. A dedicated team of our auditors becomes an extension of your team, providing continuous monitoring, regular re-audits, and on-demand security advice as your protocol grows.
Errna's Hybrid Audit vs. The Alternatives
| Feature | Errna Hybrid Audit | Automated Scanners | Freelancer Audit |
|---|---|---|---|
| AI-Augmented Analysis | |||
| Deep Manual Review | |||
| Economic Exploit Modeling | |||
| Full-Stack Coverage | Varies | ||
| CMMI 5 Certified Process | |||
| Post-Audit Support & Verification | Varies | ||
| Actionable, Prioritized Reporting | Basic | Varies |
Frequently Asked Questions
The cost of an audit depends on the complexity and size of the codebase. A simple token contract might cost a few thousand dollars, while a complex DeFi protocol or L1 blockchain can range from $50,000 to over $250,000. We provide a custom quote after a free initial consultation and code review.
Timelines vary based on complexity. A standard smart contract audit typically takes 1-3 weeks, while a full DeFi protocol audit can take 4-8 weeks or more. We can often accommodate expedited timelines for urgent launch schedules.
To start, we typically need access to your code repository (e.g., GitHub), any technical documentation or whitepapers you have, and a clear understanding of the project's intended functionality and scope.
No, while Solidity is the most common, our team has deep expertise in auditing code written in Rust (for Solana, Polkadot), Go (for Cosmos, Hyperledger), and other languages used in blockchain development. We audit the technology, not just the language.
We immediately document the vulnerability with a severity rating, detailed explanation, and clear recommendations for a fix. We discuss these findings with your development team to ensure they understand the issue. After you've implemented the fixes, we re-audit that specific part of the code for free to verify the solution.
The choice is yours. We provide both a private, detailed report for your internal team and a public-facing summary report. Most projects choose to publish the summary report to demonstrate transparency and build trust with their community.
Ready to Secure Your Place in Web3?
Don't let a preventable vulnerability undermine your vision. An investment in a comprehensive security audit is the single best decision you can make for the long-term success and safety of your project. Let's build a more secure decentralized future, together.
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