Watch a 38-minute conference talk from Ekoparty Security Conference exploring bug hunting in Facebook Messenger from dual perspectives - a security researcher and Meta's Bug Bounty program team lead. Gain insights into the discovery and remediation process of security vulnerabilities in one of the world's most widely used communication platforms, serving over 900 million users across 200+ countries. Through three detailed case studies, learn how bugs were discovered, their potential impact, and the complete lifecycle of addressing these security concerns. Understand Meta's collaborative approach with external security researchers to maintain the safety and integrity of the Messenger platform.