Explore patterns of life and activity in hacker forums through this 26-minute Black Hat conference talk. Delve into the world of cyber criminals, hacktivists, and occasional state actors who congregate in underground forums across the clear, deep, and dark web. Examine how these forums are organized geographically, linguistically, and by specific areas such as carding, reverse engineering, and hacking. Gain insights into the behavior and communication patterns of various threat actors as presented by Christopher Ahlberg. Understand the significance of these online gathering places in the cybercrime ecosystem and learn how researchers analyze these forums to track and predict malicious activities.