Cliff Stoll’s DEF CON Talk

This article recounts a memorable DEF CON talk by Cliff Stoll about his decades-long pursuit and eventual takedown of a hacker in the early 1980s. Stoll described how he meticulously tracked a user’s activity to expose their illegal use of a university’s mainframe, highlighting a classic example of proactive threat hunting and network monitoring. The story serves as a reminder of the importance of diligent network analysis and the persistence required to identify and neutralize sophisticated attacks.