What is CTK?

CertiK is a blockchain security firm that aims to reduce crypto and decentralised finance (DeFi) risks. CertiK claims to provide verification for the most robust smart contract security in the industry and leverages global cyber-security experts to conduct penetration testing and identify hacking susceptibility. CertiK also publishes a security-focused ranking platform to analyse the performance of blockchain protocols and DeFi projects in terms of vulnerabilities.