Blockchain Security Audits

FYEO's blockchain security audit service provides comprehensive end-to-end security analysis for Web3 projects, protocols, and smart contracts. The service combines manual code review with advanced custom fuzz testing to identify vulnerabilities before deployment.

Comprehensive Security Review

The audit process covers code reviews, logic analysis, and functionality testing by senior cryptographers and engineers who specialize in DeFi security. FYEO's team tests and analyzes systems for potential vulnerabilities across all major blockchain platforms including Ethereum, Solana, CosmWasm, Move, and Sui.

Interactive Auditing Process

FYEO's distinctive approach emphasizes transparency and collaboration. The interactive auditing process provides clients with real-time updates as auditors work through the codebase line-by-line. The audit focuses on code committed when the codebase is feature complete at a specific time.

Custom Fuzz Testing Integration

Beyond traditional static analysis, FYEO's custom fuzz testing combines static analysis with bespoke fuzzing harnesses specifically designed for each client's codebase and threat model. The service generates and mutates transactions, simulates adversarial users, and drives protocols through thousands of stateful executions to uncover logic errors, mathematical flaws, and state-transition bugs.

Advanced Testing Components

• Bespoke Fuzzing Harnesses: Custom-built fuzzing infrastructure specifically designed for each protocol and threat model, reflecting how the system truly behaves
• Stateful Execution: Shadow-state tracking and invariant checking throughout execution, validating that critical properties hold across all state transitions
• High-Coverage Mutation Strategies: Intelligent mutation strategies tuned specifically for DeFi and protocol logic, exhaustively exercising critical paths
• Reproducible Test Cases: Every discovered issue comes with reproducible seeds for regression testing, ensuring fixes can be validated and issues don't reoccur

Services Included

• Code Reviews: Senior cryptographers and engineers conduct detailed analysis of smart contracts and blockchain implementations to identify security vulnerabilities, logic flaws, and potential attack vectors
• Vulnerability Assessment: Comprehensive testing including manual review, automated static analysis, and dynamic fuzz testing to identify potential issues including loss of funds scenarios
• Remediation Guidance: Detailed recommendations for addressing identified vulnerabilities with insight for development teams on writing and maintaining more secure code

Audit Objectives

Verification that project intentions align with code implementation, improved understanding of security standing to identify current and future risks in deployed chain and contract infrastructure, assessment of existing security measures including their maturity and efficiency, identification of potential issues with remediation recommendations, and CI/CD integration options to rerun fuzz suites on every release.

Trusted by Leading Projects

FYEO is trusted by the world's top Web3 projects and protocols, including work with the Ethereum Foundation ecosystem and major Solana projects. Public audit reports are available on GitHub, demonstrating FYEO's commitment to transparency and contributing to the broader Web3 security ecosystem.