Skip to main content

The last day to submit domestic orders and receive them by 12/24/21 is 12/3/21.
We currently are not able to ship items to Estonia, India, Azerbaijan, or Venezuela and there may be a significant delay for shipping to China and Russia.

DEF CON 27 T-Shirt & Gold Membership Certificate



To celebrate EFF's 30th anniversary, we're offering vintage DEF CON T-Shirts with a certificate that you can redeem for a year-long EFF Gold Level membership!

EFF created this bright, futuristic, utopian design for DEF CON 27 and it features a puzzle incorporating morse code and more. You can read more about the design and the puzzle solution here! You can also get our newest member t-shirt by going to our donate page!

This t-shirt comes in a super-soft Slim Fit for all bodies. Be sure to check out our size chart. Size options are limited, so act fast!

JavaScript license information