skip to main content

DEF CON Hacking Conference

Transparency Report

DEF CON Conference Transparency Report

New for DEF CON 25, we have started to share a summary of incidents we are aware of that happend at the convention for a given year.

My hope is that by doing this DEF CON will encourage other conventions to duplicate this reporting and share their data so collectivly we can shed some light on the challenge we face in creating more safe and inclusive events.

- The Dark Tangent


Estimated number of people: 25,000+
Announced at closing ceremonies July 30th 2017

# Description
7 Harassment reports (Code of Conduct violations) including:
2 People banned for life due to harassing women
1 Person banned for life for harassing hotel staff
1 Person fled before we could identify and ban them for harassing a woman

9 Medical incidents leading to 4 hospital transports
3 Thefts
1 Vicious Dog report
3 Adorable Dog reports
3 Vandalism to DEF CON or hotel property
2 Trespass on hotel property
2 People un-banned for life by the hotel

A DEF CON ban is a prohibition against a person or group from attending future conventions due to bad behavior. DEF CON conveys the information to the hotel and if a banned person returns they will be "trespassed" by hotel security and possibly prosecuted.

A hotel ban is a ban instituted by the hotel for bad behavior against the hotel or its interests and is outside of our control. You anger the hotel, you deal with the hotel.

Other notable bans:
DEF CON also monitors news reports and community forums for potential bad actors to exclude from our conventions, like we did with Jake Applebaum, John Draper aka Captain Crunch, and Morgan Marquis-Boire, who have all been banned.