Cresco Blockchain Security provides cybersecurity services focused on blockchain applications and infrastructure. The company offers penetration testing services to identify vulnerabilities and security misconfigurations in blockchain environments. The service covers multiple blockchain architectures including public, private, and consortium blockchain implementations. Cresco provides security testing across all phases of blockchain projects. Services include: - API security testing to secure interactions within blockchain ecosystems - Integration testing to verify proper component integration and API compatibility - Performance testing to identify hardware and software weaknesses related to transaction processing - Security testing covering OWASP guidelines, DDoS, OSI layer flaws, identity layers, wallet signatures, private keys, consensus algorithms, and application dependencies - Smart contract testing to identify unexpected behavior, defective design, logic flaws, access control issues, integer overflow, and known vulnerabilities such as re-entrance attacks, code injection, and transaction order dependency The company employs ethical hacking consultants who replicate threat actor techniques to discover vulnerabilities. Testing methodology addresses authorization and authentication systems, encryption methods, and blockchain-specific attack vectors including miner attacks on timestamps and performance blocking attacks.