Some attendees yearned for the Alexis Park hotel. This year's Defcon was held at the Riviera.

Some attendees yearned for the Alexis Park hotel. This year’s Defcon was held at the Riviera.

An entry in the beer cooling contest. Every year, teams try to cool an ambient temperature beer to almost freezing level. Teams are judged on speed and lowest temperature (without forming ice).

An entry in the beer cooling contest. Every year, teams try to cool an ambient temperature beer to almost freezing level. Teams are judged on speed and lowest temperature (without forming ice).

Massive amounts of Red Bull were consumed by attendees. Photo courtesy of Robert McLaughlin, InfoSec News.

Massive amounts of Red Bull were consumed by attendees. Photo courtesy of Robert McLaughlin, InfoSec News.

Some rootkits do backfire. Photo courtesy of Robert McLaughlin, InfoSec News.

Some rootkits do backfire. Photo courtesy of Robert McLaughlin, InfoSec News.

"Goldy" poses with his ruggedized and portable wifi penetration testing machine. The machine has an instant kill switch which renders all the data inaccessible.

"Goldy" poses with his ruggedized and portable wifi penetration testing machine. The machine has an instant kill switch which renders all the data inaccessible.

Many attendees learned about lockpicking at the Locking Picking Village. Photo courtesy of Robert McLaughlin, InfoSec News.

Many attendees learned about lockpicking at the Locking Picking Village. Photo courtesy of Robert McLaughlin, InfoSec News.

Parking lots in Vegas can be extremely large and lonely. Photo courtesy of Robert McLaughlin, InfoSec News.

Parking lots in Vegas can be extremely large and lonely. Photo courtesy of Robert McLaughlin, InfoSec News.

Vegas skyline from the Riviera hotel. Photo courtesy of Robert McLaughlin, InfoSec News.

Vegas skyline from the Riviera hotel. Photo courtesy of Robert McLaughlin, InfoSec News.

Wardriving vehicle. This PT cruiser had several antennas and interesting bumper stickers. License plate frame reads, "I'd rather be hacking".

Wardriving vehicle. This PT cruiser had several antennas and interesting bumper stickers. License plate frame reads, "I’d rather be hacking".

"MALWARE" license plate

"MALWARE" license plate