Explore the security vulnerabilities of brain wallets in cryptocurrency through this BSidesLV conference talk. Delve into the methods used to measure and analyze brain wallet usage and abuse, including password cracking techniques, blockchain analysis, and draining patterns. Learn about typical key generation processes, various password cracking inputs, and the complexities involved in draining brain wallets. Examine the usage trends of brain wallets over time and compare the effectiveness of passphrases versus passwords. Gain insights into related topics such as the Large Bitcoin Collider and drains performed by Bitcoin mining pools. Presented by Ryan Castellucci and Marie Vasek, this comprehensive talk provides valuable information for cybersecurity professionals and cryptocurrency enthusiasts alike.