August 6, 2020 - 9:30am PDT to August 9, 2020 - 5:00pm PDT

Join us for the first ever DEF CON Safe Mode! DEF CON is one of the oldest and largest continuously running hacker conventions around. This virtual version of the event will be free to all and streaming on Twitch! We're excited to have multiple talks and contests for the event.

Join the Cause

Use our online donation form today and become a member of EFF! If you become a member at the titanium level you can even choose to receive a limited-edition DEF CON Safe Mode T-Shirt! These shirts have a puzzle incorporated design. Try your hand at cracking it!

EFF Talks

Detecting Fake 4G Base Stations in Real Time
Cooper Quintin
Friday August 7 at 12:30 pm PT
In this talk we will tell you how 4G IMSI Catchers might work to the best of our knowledge, and what they can and can't do. We demonstrate a brand new software project to detect fake 4G base stations, with open source software and relatively cheap hardware. And finally we will present a comprehensive plan to dramatically limit the capabilities of IMSI catchers (with the long term goal of making them useless once and for all).

Ask the EFF/Meet the EFA
Kurt Opsahl, Eva Galperin, Alexis Hancock, Rory Mir, Hannah Zhao, Nash, Emilie St-Pierre, Abi Hassen, Elliot, Tracy Rosenberg
Saturday August 8 at 7 pm PT
Join the Electronic Frontier Foundation—the nation's premiere digital civil liberties group fighting for freedom and privacy in the computer age—for a candid chat about how the law is racing to catch up with technological change and discovery. 

Then meet representatives from Electronic Frontier Alliance ( allied community and campus organizations from across the country. These technologists and advocates are working within their communities to educate and empower their neighbors in the fight for data privacy and digital rights. 

Tech Trivia Contest

Join us for some tech trivia! 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 come in first place! All teams will win great EFF gear. Register a team for tech trivia today!

Looking for Help?

As in past years, EFF staff attorneys will be here to 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 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.