August 7, 2026 - 9:00am PDT to August 9, 2026 - 6:00pm PDT
June 3, 2026 - 9:30am PDT
Las Vegas Convention Center | Las Vegas, NV

EFF's excited to be back for another DEF CON with a membership booth in the Vendor area, two contests, and a bunch of talks. Be sure to catch us at the world's largest annual hacker convention in Las Vegas from August 7-9!

Join the Cause

Come find us in Vendor Hall West to learn more about the latest in online rights, get on our action alert list, or donate to become an EFF member. We'll also have our limited-edition DEF CON 34 shirts available! These shirts have a puzzle incorporated into the design. Try your hand at cracking it!

EFF Benefit Poker Tournament

We’re going all in on internet freedom. Take a break from hacking the Gibson to face off with your competition at the tables—and benefit EFF! Your buy-in is paired with a donation to support EFF’s mission to protect online privacy and free expression for all. Join us on Friday, August 7 at 12:00 at theHorseshoe Poker Room. Play for glory. Play for money. Play for the future of the web.
WHEN: Friday, August 7, 12:00-15:00
WHERE: Horseshoe Poker Room, 3645 S Las Vegas Blvd, Las Vegas, NV 89109

EFF Tech Trivia @ DEF CON 34

Join us for some tech trivia on Saturday, August 8! EFF's team of technology experts have crafted challenging trivia about the fascinating, obscure, and trivial aspects of digital security, online rights, and internet culture. Competing teams will plumb the unfathomable depths of their knowledge, but only the champion hive mind will claim the First Place Tech Trivia Trophy and EFF swag pack. The second and third place teams will also win great EFF gear.
WHEN: Saturday, August 8 - time coming soon...
WHERE: Coming soon...

EFF Talks at DEF CON 34

More info coming soon...

Looking for Help?

As in past years, EFF staff attorneys will be present to help support the community. If you have legal concerns regarding an upcoming talk or sensitive infosec research that you are conducting at any time, please email info@eff.org. Outline the basic issues and we will do our best to connect you with the resources you need.

Read more about EFF's work defending, offering legal counsel, and publicly advocating for technologists on our Coders' Rights Project page.