This repository contains educational materials from a presentation on advanced subdomain enumeration techniques delivered at the Bugcrowd LevelUp 2017 virtual conference. The content focuses on esoteric methods for discovering subdomains that go beyond standard enumeration approaches. The materials provide insights into specialized techniques that security researchers and penetration testers can use to identify hidden or obscure subdomains during reconnaissance activities. The repository serves as a learning resource for individuals interested in understanding advanced subdomain discovery methodologies used in bug bounty hunting and security assessments.