Explore the critical role of usernames in Open Source Intelligence (OSINT) investigations through this insightful conference talk from Security BSides London. Delve into the ongoing debates surrounding username disclosure and its classification as a low or information risk. Examine the potential dangers of exposing usernames and consider whether username recycling should be treated as a significant security concern. Gain valuable insights into the risks associated with using a shared unique username across multiple services and understand the pivotal importance of usernames in OSINT operations. Learn from Simon Hall's expertise as he guides you through this often-overlooked aspect of digital security and intelligence gathering.