When and where is DEF CON 35?

August 5–8, 2027, at the Las Vegas Convention Center (LVCC) West Hall.

DEF CON 35 pricing has not been announced. For DEF CON 34 in 2026, badges could be bought online in advance or with cash at the door, and pre-registered attendees were guaranteed a badge.

Yes. DEF CON Training offers paid hands-on courses alongside the conference; see training.defcon.org.

Security · Conference

DEF CON 35

Name: DEF CON 35
Start: 2027-08-05T09:00:00+00:00
End: 2027-08-08T17:00:00+00:00
Location: Las Vegas Convention Center

Long-running hacker and security conference: talks, villages, contests and training for security researchers and professionals.

5–8 August 2027 · Thu – Sun
Las Vegas Convention Center · Las Vegas, United States
Registration open · on defcon.org

About this event

DEF CON is one of the oldest and largest hacker conferences, part of the security community for over three decades. DEF CON 35 returns to the Las Vegas Convention Center West Hall, drawing security researchers, penetration testers, defenders, engineers and students for four days of talks, hands-on villages, contests and community events.

Who attends

The audience mixes the hacker community with working security professionals:

Security researchers and penetration testers
Defenders, incident responders and SOC teams
Hardware, software and network engineers
Government and policy people working on cyber
Students and newcomers to security

Formats

DEF CON combines speaker talks with community-run villages, contests and social events. DEF CON Training runs paid hands-on courses around the conference; for 2026 these came in 1-day, 2-day and 4-day formats.

Dates and details

The official dates, August 5–8, 2027, were announced on defcon.org together with DEF CON 34. Registration, pricing and schedule for DEF CON 35 had not been published at the time of writing.

DEF CON 35 is a Security event taking place 5-8 Aug 2027 at Las Vegas Convention Center, Las Vegas, United States.