Blockchain Security Audit
Comprehensive Chain & Contract Analysis.

The core of every blockchain audit is a thorough review of smart contract source code. Our auditors examine every function, modifier, state variable, and external interaction for known vulnerability classes and novel logic errors.

Code Review Coverage

• Reentrancy analysis — single-function, cross-function, cross-contract, and read-only reentrancy patterns across all external call sites
• Access control verification — ensuring every privileged function has appropriate role-based restrictions, initializer protection, and ownership transfer safety
• Arithmetic safety — integer overflow/underflow protection, rounding direction consistency, and precision loss in multi-step calculations
• External interaction security — unchecked return values, delegatecall safety, callback reentrancy, and untrusted contract interaction risks
• Gas optimization — identifying gas-inefficient patterns that could lead to transaction failures under high-load conditions or denial-of-service through gas exhaustion
• Upgrade mechanism safety — proxy pattern implementation review, storage collision detection, and initialization security for upgradeable contracts
• Event emission completeness — verifying that all state-changing operations emit appropriate events for off-chain monitoring and incident detection

We support Solidity (EVM chains), Rust (Solana, NEAR, Polkadot), Move (Sui, Aptos), and chaincode languages for Hyperledger Fabric (Go, Java, Node.js).

Smart contracts run on infrastructure that introduces its own attack surface. Our infrastructure audit examines the full technology stack supporting your blockchain deployment.

• Node configuration review — verifying that blockchain nodes are properly configured with minimal RPC method exposure, appropriate authentication, TLS enforcement, and network segmentation
• Validator/miner security — assessing key storage, signing infrastructure, slashing protection, and failover mechanisms for validator nodes
• Network architecture analysis — evaluating P2P network topology, firewall rules, DDoS protection, and isolation between public-facing and private infrastructure components
• Monitoring and alerting — reviewing on-chain and infrastructure monitoring for anomalous transaction patterns, unusual gas consumption, and unauthorized contract interactions
• Backup and recovery procedures — assessing blockchain state backup procedures, key recovery mechanisms, and disaster recovery plans

Private key compromise is the single most common root cause of blockchain security incidents. Our key management audit evaluates the entire lifecycle of cryptographic key material.

• Key generation entropy — verifying that private keys are generated with sufficient randomness from cryptographically secure sources, not predictable seeds
• Storage security — assessing physical and logical security of key storage: HSM usage, encrypted storage at rest, access control lists, and environment variable exposure
• Multi-signature implementation — reviewing multi-sig wallet configuration, quorum requirements, signer diversity, and operational procedures for signing ceremonies
• Key rotation and revocation — evaluating procedures for key rotation, emergency key revocation, and the impact of key compromise on system integrity
• Operational security — assessing human factors: who has key access, what are the approval workflows, are there segregation of duties controls, and what happens if a key holder becomes unavailable or compromised

Our blockchain audit includes compliance mapping that identifies gaps between your current security posture and applicable regulatory frameworks. This is not a separate engagement — it is integrated into the audit process.

• SOC 2 Trust Service Criteria — mapping blockchain controls to Security, Availability, Processing Integrity, Confidentiality, and Privacy criteria with evidence documentation for auditors
• NIST Cybersecurity Framework — aligning blockchain security controls with Identify, Protect, Detect, Respond, and Recover functions across all five tiers
• NIST 800-171 / CMMC — for defense contractors using blockchain: mapping Controlled Unclassified Information (CUI) protections to blockchain-specific controls
• SEC regulatory alignment — assessing whether token operations, DeFi protocol activities, or digital asset custody trigger securities registration or exemption requirements
• FinCEN BSA/AML compliance — evaluating whether blockchain operations trigger Money Services Business (MSB) registration, implementing transaction monitoring, and documenting suspicious activity reporting procedures