Explore the potential security risks of blockchain technology in this Black Hat conference talk. Delve into the concept of embedding decentralized malware within blockchain transactions and records. Learn about the blockchain's structure, its growing importance in cryptocurrency systems, and the fixed open spaces that can be exploited for data storage. Examine a proof of concept demonstrating how malware could potentially survive indefinitely inside crypto-transactions. Understand INTERPOL's perspective on this emerging threat and discover potential solutions to address blockchain abuse and bloating. Compare this new malware hosting model to previous deployment techniques. Gain insights into the broader implications for blockchain security and the future of decentralized systems.