Cybersecurity for Decentralized Networks: Fortifying Your Web3 Future
From smart contract audits to AI-driven threat intelligence, we provide end-to-end security to protect your assets, users, and reputation in the decentralized world.
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Why Partner with Errna for Web3 Security?
The decentralized world presents unique security challenges. A generic approach won't work. We combine deep blockchain expertise with enterprise-grade security practices to provide comprehensive protection for your decentralized assets and applications.
Blockchain-Native Experts
Our team isn't just cybersecurity professionals; they are Web3 natives. We understand the nuances of smart contracts, consensus mechanisms, and decentralized infrastructure, allowing us to identify vulnerabilities that others miss.
Full Lifecycle Security
Security isn't a one-time audit. We partner with you from architectural design and pre-deployment audits to continuous post-launch monitoring and incident response, ensuring your project remains secure as it evolves.
AI-Augmented Audits
We leverage advanced AI and machine learning tools to perform exhaustive automated analysis, identifying potential attack vectors at scale. This is complemented by rigorous manual code review by our seasoned experts for maximum coverage.
Actionable Intelligence
Our reports go beyond just listing vulnerabilities. We provide clear, prioritized, and actionable recommendations, including code snippets and remediation guidance, empowering your development team to fix issues quickly and effectively.
Verifiable Process Maturity
With CMMI Level 5 and ISO 27001 certifications, our processes are independently verified to meet the highest standards for quality, security, and reliability. This ensures a consistent, transparent, and effective engagement every time.
Proven Track Record
Since 2003, we've delivered over 3000 successful projects for clients ranging from innovative startups to Fortune 500 companies. Our experience in securing high-value systems translates directly to protecting your Web3 venture.
Flexible Engagement Models
Whether you need a one-off smart contract audit, a dedicated security team embedded with your developers, or an ongoing monitoring retainer, we offer flexible models tailored to your project's scale, budget, and risk appetite.
24/7 Incident Response
In the event of a security incident, time is critical. Our dedicated incident response team is available 24/7 to help you contain threats, mitigate damage, and recover operations, minimizing downtime and protecting user funds.
Full IP & Data Ownership
Your intellectual property is yours alone. We ensure a complete and secure transfer of all code, audit reports, and proprietary data upon project completion, with strict NDAs to guarantee confidentiality and protect your competitive advantage.
Our Comprehensive Web3 Security Services
We offer a full suite of services to secure every layer of your decentralized stack, from the core protocol to the user-facing application.
Smart Contract Auditing
A line-by-line manual and automated review of your smart contract code to identify vulnerabilities, logic errors, and gas optimization issues before deployment.
- Prevent common attacks like reentrancy, integer overflows, and front-running.
- Ensure your code behaves exactly as intended under all conditions.
- Build trust with your users and investors through a verified, public audit report.
Blockchain Penetration Testing
Simulating real-world attacks on your entire decentralized ecosystem, including dApps, nodes, and APIs, to uncover exploitable weaknesses in a controlled environment.
- Identify vulnerabilities beyond the smart contract layer.
- Test your defenses against sophisticated, multi-stage attack scenarios.
- Validate your incident response plan and team readiness.
dApp Security Assessment
A holistic review of your decentralized application, focusing on the interactions between the front-end, back-end services, and smart contracts to secure the entire user journey.
- Protect against vulnerabilities like private key exposure and insecure data handling.
- Prevent phishing and other social engineering attacks targeting your users.
- Ensure secure integration with wallets and other third-party services.
DeFi Security Audit
Specialized audits for DeFi protocols, focusing on economic modeling, oracle manipulation, flash loan exploits, and complex financial logic to protect billions in TVL.
- Validate the economic soundness and incentive mechanisms of your protocol.
- Secure against price oracle manipulation and data feed tampering.
- Prevent catastrophic losses from sophisticated flash loan attacks.
Tokenomics Security Review
An analysis of your token's economic model and smart contract implementation to identify potential for manipulation, unfair distribution, or governance attacks.
- Ensure a fair and transparent token distribution mechanism.
- Prevent governance takeovers through economic exploits.
- Build long-term sustainability and trust in your token's value.
Cross-Chain Bridge Audits
A deep dive into the security of your cross-chain bridges, one of the highest-value targets in Web3, focusing on lock/mint/burn mechanisms and validator security.
- Secure the transfer of assets between different blockchain networks.
- Prevent unauthorized minting or withdrawal of assets.
- Ensure the integrity of the bridge's consensus and validation logic.
Node & Infrastructure Security
Hardening the configuration of your validator nodes, RPC endpoints, and supporting cloud infrastructure to prevent downtime, data breaches, and network-level attacks.
- Protect against DDoS attacks and ensure high availability.
- Secure API keys and other sensitive credentials.
- Implement best practices for network segmentation and access control.
Oracle Security Review
Assessing the resilience of your data oracles to ensure they provide accurate, tamper-proof data to your smart contracts, preventing price manipulation and other data-driven exploits.
- Validate the decentralization and reliability of your data sources.
- Implement safeguards against malicious or faulty oracle data.
- Ensure timely and accurate data delivery to your smart contracts.
Wallet Security Analysis
Reviewing the security of your custom wallet solution (hot, cold, or MPC) to protect user private keys and prevent unauthorized transactions.
- Secure key generation, storage, and transaction signing processes.
- Protect against malware and phishing attacks targeting user wallets.
- Implement robust multi-factor authentication and recovery mechanisms.
L1/L2 Protocol Security
Comprehensive security analysis for foundational blockchain protocols, covering consensus algorithms, cryptographic primitives, peer-to-peer networking, and virtual machine design.
- Identify and mitigate risks of 51% attacks or other consensus failures.
- Ensure the soundness of the protocol's cryptographic foundations.
- Secure the network against eclipse, sybil, and other P2P attacks.
Governance Security Consulting
Designing and auditing DAO governance structures and smart contracts to ensure they are resilient against hostile takeovers, vote manipulation, and malicious proposals.
- Implement secure and transparent voting and proposal mechanisms.
- Protect the treasury from unauthorized access or malicious proposals.
- Ensure the long-term health and decentralization of your project's governance.
KYC/AML Compliance Integration
Integrating robust and privacy-preserving KYC/AML solutions into your platform to meet regulatory requirements without compromising user experience or decentralization principles.
- Navigate complex global regulatory landscapes with confidence.
- Prevent illicit activities and sanctions violations on your platform.
- Build trust with institutional partners and regulators.
AI-Powered Threat Monitoring
24/7 real-time monitoring of your on-chain and off-chain activities using AI to detect anomalous transactions, emerging threats, and potential exploits before they cause damage.
- Get instant alerts on suspicious activity targeting your protocol.
- Proactively identify and patch vulnerabilities based on real-world threat intelligence.
- Leverage machine learning to distinguish real threats from market noise.
Incident Response & Forensics
A dedicated team on standby to manage security incidents. We help you contain the breach, conduct a forensic analysis to understand the root cause, and guide you through recovery and public communication.
- Minimize financial and reputational damage from a security breach.
- Preserve evidence for potential legal action and insurance claims.
- Implement post-incident improvements to prevent future attacks.
Gas Optimization Security
Analyzing and refactoring your smart contracts to reduce transaction costs (gas fees) for your users, while ensuring that these optimizations do not introduce new security vulnerabilities.
- Improve user experience and adoption by lowering transaction costs.
- Prevent gas-related DoS vulnerabilities.
- Ensure the efficiency and scalability of your smart contracts.
Proven Expertise in Action
We don't just talk about security; we deliver it. Explore how we've helped our clients protect their assets and build resilient decentralized platforms.
The Challenge
The client's primary concern was protecting their platform from economic exploits, particularly flash loan attacks and price oracle manipulation, which have plagued the DeFi space. They needed a security partner who understood not just the code, but the complex financial incentives at play.
Key Challenges:
- Securing complex interest rate calculation logic.
- Preventing manipulation of asset prices from external oracles.
- Ensuring the liquidation mechanism was both fair and resistant to attack.
- Hardening the governance module to prevent malicious proposals.
Our Solution
We conducted a multi-faceted security audit combining automated scanning, manual code review, and economic modeling.
Our approach included:
- A line-by-line review of all 25 smart contracts in the protocol.
- Simulating various flash loan attack scenarios to test the protocol's resilience.
- Analyzing the oracle design for potential manipulation vectors and recommending a more robust, decentralized data feed.
- Providing detailed reports with risk-prioritized findings and actionable code-level recommendations for remediation.
The Challenge
The marketplace's success depended on user trust. They needed to go beyond a standard smart contract audit and test their entire platform—from the front-end minting process to their off-chain order book—against real-world attack vectors.
Key Challenges:
- Protecting users from malicious signatures that could drain their wallets.
- Ensuring the minting process was fair and resistant to bots.
- Securing the API that connected the front-end to the blockchain.
- Preventing counterfeit NFTs from being listed on the platform.
Our Solution
We performed a comprehensive dApp penetration test, focusing on the user journey and the interaction between on-chain and off-chain components.
Our approach included:
- A full audit of their marketplace, minting, and staking smart contracts.
- Security testing of their front-end application to identify vulnerabilities like Cross-Site Scripting (XSS).
- A review of their off-chain signature validation process (EIP-712) to prevent phishing.
- Load testing and analysis of their anti-bot measures for the upcoming mint.
The Challenge
The client needed to ensure that only authorized participants could write data to the ledger and that the data, once written, was immutable and tamper-proof. The security model had to be robust enough to satisfy the compliance requirements of multiple international partners.
Key Challenges:
- Designing a secure and scalable identity and access management (IAM) system.
- Hardening the configuration of the Hyperledger Fabric nodes and network.
- Securing the chaincode (smart contracts) against logic flaws.
- Ensuring the privacy of sensitive commercial data between participants.
Our Solution
We provided end-to-end security consulting, from architectural design to post-deployment testing for their Hyperledger Fabric network.
Our approach included:
- A thorough review of the network architecture and IAM design.
- A security audit of the chaincode to identify and fix vulnerabilities.
- Penetration testing of the network nodes and APIs to simulate attacks from malicious insiders and external threats.
- Developing a comprehensive security policy and governance framework for all network participants.
Technologies & Protocols We Secure
Our expertise spans the entire Web3 ecosystem. We have deep experience securing projects built on a wide range of blockchains, smart contract languages, and infrastructure components.
What Our Clients Say
Trust is earned. Hear directly from the leaders and builders we've helped to secure their place in the decentralized future.
"The most comprehensive security audit we've ever received. Errna's report was clear, actionable, and helped us launch our mainnet with total confidence. They are the gold standard."
"As a non-technical founder, I needed a security partner I could trust implicitly. The Errna team was patient, professional, and explained complex risks in a way I could understand. Highly recommended."
"Their incident response team was a lifesaver. When we faced a potential threat, they were online with us in minutes, helping us diagnose and mitigate the issue before any damage was done. True professionals."
"We engaged Errna for a full penetration test of our cross-chain bridge. Their methodology was rigorous and uncovered subtle flaws in our validator logic that automated tools would have missed."
"The AI-powered monitoring platform is a game-changer. We get real-time alerts on threats specific to our protocol, which allows our team to be proactive rather than reactive. It's like having a 24/7 security analyst on staff."
"Beyond the technical audit, their team provided invaluable advice on governance security and best practices for treasury management. They helped us build a more resilient and truly decentralized organization."
Frequently Asked Questions
Have questions? We have answers. Here are some of the most common inquiries we receive about our Web3 security services.
A smart contract audit is a deep, line-by-line analysis of the contract's code to find vulnerabilities and logic errors. A penetration test is broader; it simulates real-world attacks on your entire application (dApp, APIs, nodes) to see how the components interact and where weaknesses can be exploited. We recommend both for comprehensive security.
The duration depends on the complexity and size of the codebase. A simple ERC-20 token might take a few days, while a complex DeFi protocol with multiple contracts can take 2 to 4 weeks or more. We provide a detailed timeline estimate after an initial review of your project.
We have extensive experience with EVM-compatible chains like Ethereum, Polygon, and BSC, and languages like Solidity and Vyper. We also have expertise in other ecosystems like Solana (Rust), Cosmos (Go), and enterprise platforms like Hyperledger Fabric. Our team is constantly expanding its expertise to cover new and emerging technologies.
You will receive a comprehensive report detailing all findings, categorized by severity (Critical, High, Medium, Low, Informational). Each finding includes a technical description of the vulnerability, its potential impact, and clear, actionable recommendations for remediation, often with code examples. After you've patched the issues, we perform a verification check and can issue a public audit certificate.
We follow a responsible disclosure policy. All critical vulnerabilities are communicated to your team immediately through a secure, private channel. We work closely with you to ensure the issue is understood and can be patched before it is included in any final or public report. Client confidentiality and security are our top priorities.
Absolutely. We view security as an ongoing partnership. We offer retainer services for continuous monitoring, security consulting for new features, and 24/7 incident response. Our goal is to be your long-term security partner as your project grows and evolves.
Ready to Secure Your Decentralized Future?
Don't leave your project's security to chance. A single vulnerability can compromise your assets, users, and reputation. Partner with our expert Web3 security team to build a resilient and trustworthy platform. Schedule a free, no-obligation consultation to discuss your project's specific security needs.
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