Web3 Audit & Blockchain Security Services
150+
audits
completed
$10B+
in client
assets protected
$200B+
in transacted
value secured
300+
crit / high issues found
Consolidated clients
What is a Web3 Audit?
A Web3 audit is an end-to-end security assessment of your protocol’s critical components: smart contracts, dApps, governance, tokenomics, and infrastructure. Our senior engineers review architecture and code, model attack paths, and validate assumptions so you launch with confidence.
Our Blockchain Security Services
Beyond audits, we deliver blockchain security services from architecture reviews and protocol design to incident readiness and ongoing advisory. We align cybersecurity practices to on-chain realities to protect your users and network from vulnerabilities.
Code Audits
Smart Contract Audit
Detect vulnerabilities, logic flaws, and inefficiencies in your code.
Solidity Audit
Secure EVM contracts across Ethereum, Arbitrum, Polygon, Base, and Optimism.
Rust Smart Contract Audit
Protect programs on Solana, NEAR, and other Rust ecosystems.
Move Audit
Review Sui, Aptos, and Move-based protocols for safe execution.
dApp Audit
Secure your frontend, backend, APIs, and user flows.
Blockchain Bridge Audit
Protect cross-chain contracts, relayers, custody, and messaging logic.
Blockchain Protocol Audit
Secure consensus, core logic, and network-wide reliability.
OpSec Audit
Assess multisigs, key management, and internal security practices.
Bitcoin Audit
Secure Bitcoin-based contracts, multisigs, and infrastructure.
Crypto Incident Response
Rapid threat containment, recovery, and security reinforcement.
Economic & Risk Services
Economic Audit
Stress-test your protocol’s economic model and parameters.
Tokenomics Audit
Validate supply, emissions, and incentive sustainability.
Mechanism Design Review
Ensure auctions, staking, and incentives align with protocol health.
Ecosystem Risk Assessment
Map dependencies like oracles, bridges, and sequencers for hidden risks.
Points & Incentives Program Design
Design loyalty, rewards, and points systems that drive adoption.
DeFi Ecosystem Strategic R&D
Guide integrations and growth with custom quantitative research.
DAO Audit
Review governance rules, voting, and treasury controls.
Staking Design Review
Evaluate validator incentives, slashing, and restaking mechanics.
Extended Coverage
Continuous
Monitoring &
Post-Audit Support
Real-time alerts and guidance for upgrades, patches, and emerging risks across your protocol and stack.
Incident
Response
Advisory
Rapid triage and expert guidance during exploits or suspected compromises, from detection through recovery.
Bug Bounty
Program Design &
Management
Plan and manage bounty programs with vetted partners to surface bugs early and harden defenses.
A Trusted Blockchain Security Partner
Senior-led blockchain audits with an attacker-minded approach
Trusted by teams securing billions in TVL across major chains
Deep manual analysis backed by static checks and custom scripts
Clear, actionable reports designed for fast developer fixes
Post-audit verification and guidance for secure launches
3+ years of experience auditing blockchain projects
Our Blockchain Security Audit Process
Scoping and Planning
We define the audit scope, gather documentation, and set timelines to ensure a smooth and focused review.
Architecture Review
We examine your system design, dependencies, and assumptions around execution, governance, and integrations to understand the full context.
Code Review
Senior engineers go line by line, supported by advanced tooling, to uncover vulnerabilities and inefficiencies.
Validation & Testing
We run targeted checks and scenario tests to confirm assumptions and measure how the system behaves under different conditions.
Deliver the Plan
You get severity-ranked findings, minimal-change fixes, and clear next steps your developers can act on immediately.
Verify & Support
We retest fixes, confirm mitigation, and remain available to guide you through upgrades or incidents.
Benefits of a Solidity Audit with Three Sigma?
1. Measurable risk reduction
Find critical issues before mainnet. Get a prioritized report with severity, fixes, and proof-of-impact. Fewer hotfixes. Fewer rollbacks.
2. Ship faster with developer-first guidance
We write actionable steps for your team. Clear code refs, test hints, and reproducible PoCs. Your engineers move quicker with less back-and-forth.
3. Trust for listings, investors and users
Audit artifacts support exchange reviews and due diligence. Transparent findings build community confidence. Safer launches, stronger adoption.
4. Performance and cost wins
Identify gas and runtime inefficiencies during review. Reduce waste without sacrificing safety. Better UX under load.
5. Architecture hardened end-to-end
Threat models cover contracts, off-chain services, and integrations. Safer upgrades, pausing, and migrations. Incident runbooks that cut MTTR.
6. Chain-aware coverage (EVM & beyond)
From a Solidity audit on EVM to Solana-specific checks like CPI flows. Static analysis, manual review, fuzzing, and custom threat modeling. All matched to your stack.
Why Choose Three Sigma?
Outcome over optics
We optimize for reduced exploit risk and low-friction fixes, not vanity issue counts. Our audit methodology sequences review by economic impact and reachability. Early patches do the most good. Success is measured by safe launches, smooth upgrades, and faster integrations. You get crisp recommendations, clear owners, and realistic timelines you can defend. No security theater. Just progress you can point to.
A process that respects developer time.
We sync early on risky flows to avoid late surprises. Communication is direct and jargon-light. Findings include suggested diffs and test hints so patches land quickly. Depth matches risk: deep where loss is catastrophic, lightweight where risk is bounded. That means fewer cycles, fewer stalls, and fewer “can you clarify?” threads. Your smart contract audit fits how your team actually ships software.
Senior, attacker-minded reviewers.
Your Solidity audit is led by engineers who have built and broken complex on-chain systems. We think like adversaries and write like teammates. Expect architecture-specific threat models, not generic checklists. Expect pragmatic trade-offs-gas vs. safety, UX vs. controls, with guidance that preserves product intent while removing sharp edges. When refactors are needed, we include migration steps, test scaffolds, and measurable acceptance criteria.
Proof, closure, and ongoing support.
We verify remediation with PR reviews and targeted retests, then issue a final, shareable status for external stakeholders. Need an integration or exchange greenlight? You’ll have the evidence that meets their bar. Post-audit, we remain available to sanity-check upgrades, triage late discoveries, or review emergency patches. Security is a practice, not a moment. Choose Three Sigma if you want an audit partner who stays useful after delivery and turns findings into lasting improvements in how you design, test and ship.
What You Gain from
a Three Sigma Web3 Audit
Lower risk of exploits or operational failures.
Cleaner, more efficient code ready for mainnet.
Increased trust from users, investors, and partners.
Confidence to scale safely in an evolving Web3 landscape.
Our Partners & Clients
Industries We Secure
Our audits have helped secure decentralized applications across multiple verticals.
DeFi &
Liquidity
Lending platforms, DEXes, staking, and collateral markets.
NFT &
Collectibles
Marketplaces, launchpads, minting tools, and creator hubs.
Gaming &
Metaverse
Play-to-earn games, trading hubs, and immersive 3D worlds.
Cross-Chain Infrastructure
Bridges, oracle networks, and cross-chain protocol layers.
Frequently Asked Questions
What does a Web3 audit include?
A Web3 audit examines both the technical and economic layers of your blockchain system. On the technical side, it includes smart contract code review, static and dynamic analysis, fuzz testing, and threat modeling to detect vulnerabilities before deployment. Economically, it evaluates tokenomics design, DAO governance mechanisms, and staking or reward structures to ensure sustainability, fairness, and exploit resistance. We audit the full ecosystem, from Solidity contracts and protocol integrations to incentive logic and treasury flows, delivering a unified report that strengthens your project’s code, economics, and governance before mainnet launch.
How long does a blockchain or Web3 audit take?
Most Web3 audits take 1-3 weeks, depending on code complexity, integrations and economic design depth. Smaller DeFi projects and single-contract deployments may finish in days, while larger protocols, staking systems, or DAO frameworks often require staged reviews. Three Sigma provides a clear timeline upfront and maintains open communication throughout the process to help teams plan safe, predictable launches.
What happens after the audit report is delivered?
After you receive the findings, our collaboration continues. Your engineers can submit pull requests for review, and we re-test all patches that resolve critical or high-severity issues. When remediation is complete, we issue a final, shareable status used for exchange listings, grant programs, or investor due diligence, providing independent proof that your project has been thoroughly audited.
What types of projects does Three Sigma audit?
We audit DeFi protocols, DAOs, staking platforms, cross-chain bridges, governance systems, and blockchain infrastructure. Our Solidity audit experience covers EVM-based chains such as Ethereum, Arbitrum, Polygon, and Base. We also perform specialized reviews for Rust/Solana, Move-based protocols, and other custom ecosystems, adapting our methodology to your unique stack.
Why is a professional audit necessary if the code is open source?
Even transparent, open-source code can hide logic errors and economic flaws that slip through casual review. Professional Web3 audits combine automated analysis with human-led threat modeling and game-theoretic review to uncover issues that impact security, fairness, and sustainability. An external audit also provides independent assurance to users, exchanges, and investors that your contracts and incentives are safe to interact with.