Smart Contract Security for CEXs & Wallets

Cantina delivers tailored audits for custodial and user-facing systems that manage billions in value. Whether you operate a centralized exchange or a self-custody wallet product, we specialize in securing systems that handle key management, withdrawal logic, API integrations, and cross-chain workflows. Our platform matches you with experts who understand wallet risk, exchange flows, and operational infrastructure.

Cantina logo - web3 security audit partner.
Reviews

Tailored Security Review Models for Every Project

Whether you’re building decentralized protocols, financial applications, or ecosystem infrastructure, Cantina offers scalable review formats. We match you with the right experts and ensure transparent, collaborative audits to uncover vulnerabilities before they matter.

Issue thread header with information about security audits issues.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Smart contract reviewer selection.Security audit classification labels.Audit finding status indicators.Vulnerability severity indicator.Security findings sort options.New finding button for redirecting to security audit.
Smart contract finding card showing issue summary and metadata.Protocol vulnerability ticket with identifier and engagement metrics.Security review ticket displaying issue title and tracking information.Smart contract issue ticket with status and reference details.Security findings interface showing active protocol review items.Audit finding entry showing ID, description, and interaction count.Security finding, overview showing title and metadata.Opened security finding with status indicators and comment count.
Smart contract finding card showing issue summary and metadata.Protocol vulnerability ticket with identifier and engagement metrics.Security review ticket displaying issue title and tracking information.Smart contract issue ticket with status and reference details.Security findings interface showing active protocol review items.Audit finding entry showing ID, description, and interaction count.Security finding, overview showing title and metadata.Opened security finding with status indicators and comment count.
Security researcher profile card showing contribution metrics and status.
Featured button container with elevated design for primary security platform functions.Primary action button container with shadow effect and hover state for audit platform navigation.Clickable button container with modern design elements for blockchain security interface.
Security vulnerability showing Enable Mode Signature replay risk in smart contract validation system, with high severity.

How Cantina Reviews Work

Security review reports by Cantina showcasing Web3 audits, bug bounty results, and vulnerability assessments for blockchain protocols.Security review reports by Cantina showcasing Web3 audits, bug bounty results, and vulnerability assessments for blockchain protocols.

Frequently Asked Questions

Do you provide post-review support or retesting for CEXs and Wallets?

Yes, Cantina offers post-review support, including guidance on remediation and optional retesting to verify that vulnerabilities have been properly addressed before deployment or after major updates.

What is a Cantina Security Review for CEXs and Wallets?

A Cantina Security Review is an expert-led, in-depth assessment of your CEX or wallet platform’s codebase and infrastructure. We identify vulnerabilities in trading engines, custody systems, wallet management, and backend services by matching you with solo reviewers, modular teams, or competitive reviewers tailored to your risk profile and operational needs.

What types of systems can Cantina review for CEXs and Wallets?

Cantina reviews a broad range of systems relevant to CEXs and wallet providers, including:

  • Exchange core trading engines
  • Custodial and non-custodial wallet infrastructure
  • User authentication and KYC modules
  • Withdrawal and deposit mechanisms
  • Smart contract integrations (for hybrid or DeFi-enabled exchanges)
  • Mobile and web wallet applications

Who performs Cantina’s security reviews for CEXs and Wallets?

Reviews are conducted by experienced security researchers, including specialists in exchange infrastructure, wallet cryptography, and blockchain protocols. You can choose from solo reviewers, modular teams, or competitive review formats depending on your workflow and risk appetite.

What makes Cantina reviews different from other audit providers for CEXs and Wallets?

Cantina offers:

  • Flexible team composition for rapid onboarding and budget versatility
  • Transparent, collaborative audits with clear reporting
  • Options for competitive review formats to incentivize thoroughness
  • Post-review support and optional retesting to ensure remediation
  • The ability to combine reviews with bug bounty programs or competitions for ongoing security

What does the review process look like for CEXs and Wallets?

We start with a scoping call to define your systems, assets, and risk areas. Next, we assign the ideal researchers and conduct the review using our secure and collaborative platform. Findings are tracked and triaged, and your team can engage directly with researchers throughout the process.

Can I combine a security review with a bug bounty or competition for CEXs and Wallets?

Yes, Cantina supports combining traditional security reviews with bug bounty programs or competitive code review events. This approach increases coverage and incentivizes external researchers to identify critical vulnerabilities, which is especially valuable for high-value CEX and wallet platforms.

Which companies typically use Cantina reviews?

Cantina works with a wide range of organizations, including:

  • Major centralized exchanges (CEXs)
  • Custodial and non-custodial wallet providers
  • Hybrid platforms integrating DeFi modules
  • Financial infrastructure companies in the blockchain ecosystem.

How can I view past review examples?

You can view examples of completed reviews—including those for exchanges and wallet providers—on Cantina’s public portfolio or by request. Notable clients include Aave, OP Labs, Eigenlayer, and Morpho, among others.

How does team composition differ between Spearbit and Cantina reviews for CEXs and Wallets?

  • Spearbit reviews: Always involve at least two Lead Security Researchers for maximum depth and rigor.
  • Cantina reviews: Offer more flexibility, with team composition optimized for fast onboarding and budget versatility, making them ideal for CEX and wallet providers needing scalable solutions.

Past Reviews