DEF CON 34 2026 — Las Vegas, NV

“More critical infrastructure vulnerabilities have been disclosed here than anywhere…”

More critical infrastructure vulnerabilities have been disclosed at DEF CON than anywhere else on earth. The conference where that happens — 34 editions in now — is held in Las Vegas every August and draws the largest gathering of security researchers, hackers, and engineers in the world. DEF CON is unlike any conference you've attended. Walk in and you'll find badge puzzle hunts that thousands of people spend the entire conference solving; lock-picking villages where anyone can learn to pick a padlock in minutes; talks that expose critical vulnerabilities in systems we trust daily — power grids, voting machines, medical devices, cars. The crowd is a mix of 20-year-old prodigies, retired intelligence professionals, and corporate security teams sitting in the same row. There is no dress code except the absence of one. The culture rewards curiosity over credentials. DEF CON has the energy of a music festival crossed with a graduate thesis defense — and the hallway conversations may be more valuable than either. If you've ever wondered how systems get broken — and how they get fixed — DEF CON is worth the trip to Las Vegas. This is for technologists, security professionals, students, and curious people who want to understand the infrastructure of modern life by learning its failure modes. It is not for people who need structured agendas and sponsored lanyards. DEF CON is self-organized, intentionally weird, and deliberately unwelcoming to corporate gatekeeping. If you've ever googled "how does that hack actually work" — you belong here. Register early — badge prices increase at the door and can exceed $400. Cash is preferred and sometimes required. The badges themselves are puzzles; experienced attendees spend all four days cracking them. Bring comfortable shoes — the Las Vegas Convention Center spans multiple halls. DEF CON runs four specialized villages simultaneously (Wireless, AI, Hardware, Social Engineering) and you will miss most of them. That's part of the culture: nobody sees everything. Bring a way to share contact information — the hallway conversations at DEF CON have launched more security careers than any job board. The mainstream technology industry spends billions on security theater. DEF CON spends four days showing you exactly how it fails — and then showing you how to fix it. If you've ever felt that the systems you rely on are more fragile than anyone admits, you're right. DEF CON is the room where people say so. Tickets and registration at defcon.org. August 6–9, 2026, Las Vegas Convention Center.