DEFCON - The wall of sheep

The Wall of Sheep is a projector screen that displays captured usernames and passwords. The Wall, which originally was named as the Wall of Shame, is a time-honored tradition at Defcon where a loose knit group of people continuously sniffs the network for any plaintext usernames and passwords on the wired and wireless networks. Since this is a hacker convention, attendees using the Defcon network should protect their logins by using VPN, SSH or other encryption technology. Some attendees apparently didn't get the message.

Read the article HERE.