Hacker Jeopardy

Hey @defcon, congratulations to the new @HackerJeopardy champions, Infamous Chalupa. You didn’t fuck it up. Also, @lintile fucked it up by not thanking the Cal State San Bernardino students for their logistical support tonight. You didn’t fuck it up. See you next year! #DFIU

Come play #HackerPassword and @HackerJeopardy at @CypherCon, because I’m bringing the receipts! #DFIU

Are you @HackerJeopardy? Because everyone is waiting for you to ask me in the form the question. #DFIU

ANSWERING IN THE FORM OF A QUESTION #DFIU

Your #DFIU category today is PUTTING THE F IN PRINTF This printf conversion specifier lets you write arbitrary values to arbitrary memory addresses, turning logging functions into root shells since 1999

Your #DFIU category today is OG HACKER SHIRTS This Ron Rivest 1987 cipher, illegal to export from the US (mathematical munitions), fit on 3 lines of Perl and adorned t-shirts as a form of civil disobedience before becoming the WEP protocol's greatest weakness

In trying times like these, it’s important to know that true innovation comes through simplicity. Therefore, team #DFIU has bravely chosen to simplify our logo. Please direct all complaints to @winnschwartau. Please direct all congrats to @lintile.

We had more good teams than we knew what to do with this year, are going to continue working to ensure that we can feature as much of our community on stage as we possibly can. Until next year, take care of yourself and others, and #DFIU! Maybe we will see you at a con near you!

Thank you to everyone who has participated with our #DFIU events this year and to everyone that poured their energy into @HackerJeopardy. From our team to all you humans, goons, and everyone in between, thank you for your support. 📸 @Cannibal

@dakacki @alt_bier @defcon @technick @supersat All objects except @lintile apparently

@alt_bier @HackerJeopardy @defcon @technick @supersat I would’ve been happy to take one, but the baby oil prevented me from handling any tangible object

Anyone happen to snap a pic of me on stage on night 1 of @HackerJeopardy with team BadgeStrife? I need evidence for friends that couldn't make it to @defcon this year. Thanks. @technick @supersat @dakacki

Pandemonium. Chalupas. OnlyLans. Once more into the void, @defcon. #DFIU

TONIGHT TONIGHT TONIGHT FRIDAY NIGHT HACKDOWN AT @defcon GET IN LINE EARLY GET A GOOD SEAT YOU’RE ONLY GONNA NEED THE EDGE DON’T. FUCK. IT. UP. #DFIU

Team signups for @HackerJeopardy at @defcon 33 are officially closed. We had an abundance of great signups, thank you to all of you for submissions. You mostly didn’t fuck it up. Captains, you will receive a message Friday morning indicating your status. IN, OUT, or #DFIU.

#DFIU 👇

You will go to hackerjeopardy.com and sign up your team to #DFIU @HackerJeopardy

🏆 CHAMPIONSHIP REGISTRATION OPEN 🏆 🥊 Aug 8-9, 2025 | 8PM PDT 💀 Think your squad can claim the championship belt live @defcon? 👑 hackerjeopardy.com👑 #DEFCON33 LET'S GET READY TO #DFIU!

@trailofbits NOT IN THE FORM OF A QUESTION! #DFIU

Answer: Private key compromise. Fortunately, you can make your protocol drastically more resilient to private key leaks using our 4-level framework. blog.trailofbits.com/2025/06/25/mat…

Did you know the biggest cause of crypto hacks in 2024 goes entirely unnoticed by most security audits? ⬇️