Pre-launch audit
Review contract logic, permissions, upgrade paths and external integrations.
Security and audits
Security audit companies for Web3 and tokenization teams
Compare smart contract auditors, Web3 security platforms, bug bounty providers and risk intelligence vendors by the security workflow they are strongest for.
Runtime monitoring
Track deployed contracts, bridges, governance and transaction anomalies.
Ongoing assurance
Add bug bounties, retesting and incident-response workflows after launch.
Directory
Compare security audit companies
Listings are for discovery and shortlist building. Buyers should verify scope, methodology, references, availability and commercial terms directly with each provider.
01
Vetted Risk Management & Security Partner
SureStack
VettedBest for: Digital asset issuers, tokenization teams, funds and Web3 operators that need risk intelligence, threat monitoring and proactive security visibility.
SureStack is an AI-powered Web3 risk intelligence platform focused on vulnerability detection, threat monitoring and digital asset risk protection before threats hit the chain.
- Services
- Risk intelligence, threat monitoring, digital asset security, tokenization risk management
- Coverage
- Global
VettedRisk intelligenceThreat monitoringTokenization securityAtlas Intelligence
02
Elite Security Research & Auditing
Trail of Bits
VettedBest for: Complex protocols, novel cryptography, ZK systems, consensus logic and high-assurance engineering reviews.
Trail of Bits is widely respected for deep security research and tooling such as Slither and Echidna, making it a strong fit for sophisticated smart contract and protocol audits.
- Services
- Smart contract audits, formal methods, security tooling, protocol security research
- Coverage
- United States, Global
Research-gradeFormal methodsTool buildersProtocol security
03
Smart Contract Security & Standards
OpenZeppelin
VettedBest for: EVM teams using OpenZeppelin contracts, upgradeable contracts, Defender, access controls and standard token patterns.
OpenZeppelin combines the most widely used Solidity libraries with audit services and Defender operations tooling for live smart contract management.
- Services
- Smart contract audits, security libraries, Defender, monitoring and operations
- Coverage
- United States, Global
EVM standardContracts libraryDefenderAudits
04
Full-Stack Web3 Security
Halborn
VettedBest for: Teams that need smart contract, cloud, API, DevOps, key management and infrastructure security reviewed together.
Halborn provides broad Web3 security services across smart contracts, infrastructure, penetration testing and operational security.
- Services
- Smart contract audits, penetration testing, cloud security, DevOps security
- Coverage
- United States, Global
Full stackPen testingInfra securityCloud
05
AI-Powered Security & On-Chain Analytics
CertiK
VettedBest for: Projects that need widely recognized audit reports, exchange-facing credibility and ongoing monitoring.
CertiK is one of the most visible Web3 security brands, combining audit services with Skynet monitoring and public security scoring.
- Services
- Audits, formal verification, Skynet monitoring, security scoring
- Coverage
- United States, Global
Audit reportsSkynetSecurity scoreMonitoring
06
Elite Auditor Marketplace
Spearbit
VettedBest for: Protocols that want curated independent security researchers assembled around a specific codebase or engagement.
Spearbit gives projects access to a curated network of senior Web3 security researchers for protocol-specific reviews.
- Services
- Curated audits, independent researcher teams, protocol reviews
- Coverage
- United States, Global
Curated networkIndependent researchersProtocol audits
07
Security Auditing & Education
Cyfrin
VettedBest for: Teams that want smart contract audits paired with clear developer education and practical remediation guidance.
Cyfrin combines audit work with developer education, CodeHawks contests and security training for smart contract teams.
- Services
- Smart contract audits, security education, audit contests, remediation
- Coverage
- United States, Global
EducationCodeHawksDeveloper ledAudits
08
Enterprise & Institutional Security
Quantstamp
VettedBest for: Banks, asset managers and enterprise teams that need institutional communication and blockchain security review.
Quantstamp focuses on blockchain security audits with enterprise and institutional experience across digital asset projects.
- Services
- Smart contract audits, enterprise blockchain security, institutional reporting
- Coverage
- United States, Global
EnterpriseInstitutionalAuditsReporting
09
Decentralized Threat Detection
Forta Network
VettedBest for: Live protocols that need real-time monitoring for exploits, anomalies and suspicious on-chain activity.
Forta is a decentralized monitoring network for real-time threat detection across smart contracts and on-chain systems.
- Services
- Runtime monitoring, detection bots, threat alerts, protocol monitoring
- Coverage
- Global
Real-timeMonitoringDetection botsRuntime security
10
Proactive Web3 Security Platform
Hypernative
VettedBest for: Teams that need monitoring across smart contracts, governance, bridges, oracles and infrastructure.
Hypernative provides proactive Web3 security monitoring designed to identify threats before they turn into incidents.
- Services
- Threat detection, infrastructure monitoring, governance risk, bridge monitoring
- Coverage
- Israel, Global
ProactiveMulti-vectorMonitoringSecurity operations
11
Web3 Bug Bounty Platform
Immunefi
VettedBest for: Protocols that want ongoing external vulnerability discovery after audits and before major upgrades.
Immunefi connects Web3 projects with security researchers through bug bounty programs and responsible disclosure workflows.
- Services
- Bug bounties, responsible disclosure, researcher community, vulnerability triage
- Coverage
- Global
Bug bountyWhitehatsContinuous securityDisclosure
12
Competitive Audit Platform
Code4rena
VettedBest for: Teams that want many independent reviewers looking at a codebase in a time-boxed security contest.
Code4rena runs competitive audit contests where security researchers compete to find vulnerabilities in protocol code.
- Services
- Audit contests, competitive security review, researcher marketplace
- Coverage
- Global
Competitive auditContestResearchersCoverage
Buyer questions
How to choose a Web3 security provider
Should I choose a large audit firm or a specialist?
Large firms can help with brand recognition and institutional comfort. Specialists may be better for a specific chain, language, risk model or protocol design. Match the provider to the riskiest part of your stack.
What should I prepare before asking for quotes?
Share repositories, technical documentation, chain, contracts in scope, admin permissions, upgrade model, external dependencies, testing coverage, launch timeline and whether you need retesting after remediation.
What comes after the audit?
Teams should remediate findings, get fixes retested, add monitoring, create incident-response playbooks and consider bug bounties or ongoing risk intelligence for production systems.