DEF CON
@defcon.bsky.social
The world’s premier hacker conference. Serving the global hacker community since 1993.
Defcon.org
Forum.defcon.org
Defcon.social
Defcon.org
Forum.defcon.org
Defcon.social
#defconmovienight keeps the holiday magic going with another John Cusack vehicle. Join us Saturday at 8pm PST for 'Better Off Dead'. We'll be in the movie-night-text channel of the Discord (discord.gg/defcon), calculating the street value of K-12. Closest guess without going over wins Fronch Toast.
December 19, 2025 at 12:33 AM
#defconmovienight keeps the holiday magic going with another John Cusack vehicle. Join us Saturday at 8pm PST for 'Better Off Dead'. We'll be in the movie-night-text channel of the Discord (discord.gg/defcon), calculating the street value of K-12. Closest guess without going over wins Fronch Toast.
Reposted by DEF CON
Prepare yourself for next year’s DEF CON and Black Hat with this new @nostarchpress.bsky.social bundle: Hacking. 18 books for as little as $36—and you’re supporting EFF’s fight for digital freedom! www.humblebundle.com/books/hacki...
Humble Tech Book Bundle: Hacking by No Starch
Turn your curiosity about computer hacking into a fast-paced, proven, and practical career with the latest Humble Tech Book Bundle!
www.humblebundle.com
December 17, 2025 at 10:01 PM
Prepare yourself for next year’s DEF CON and Black Hat with this new @nostarchpress.bsky.social bundle: Hacking. 18 books for as little as $36—and you’re supporting EFF’s fight for digital freedom! www.humblebundle.com/books/hacki...
#defconmovienight presents another Xmas-adjacent movie this week. Join us at 8pm PST Saturday for ‘The Ice Harvest’. We’ll be in the movie-night-text channel of the #defcon Discord (discord.gg/defcon) for some holiday magic. BTW - the tagline ‘Thick Thieves. Thin Ice’ is just about perfect.
December 13, 2025 at 1:09 AM
#defconmovienight presents another Xmas-adjacent movie this week. Join us at 8pm PST Saturday for ‘The Ice Harvest’. We’ll be in the movie-night-text channel of the #defcon Discord (discord.gg/defcon) for some holiday magic. BTW - the tagline ‘Thick Thieves. Thin Ice’ is just about perfect.
The Call for Trainers is now OPEN for #DEFCONTraining Las Vegas at #DEFCON 34!
Do you have expertise in emerging threats, defensive strategies, or cutting-edge security techniques? We want to hear from you!
Visit training.defcon.org to submit your application by January 12, 2026.
Do you have expertise in emerging threats, defensive strategies, or cutting-edge security techniques? We want to hear from you!
Visit training.defcon.org to submit your application by January 12, 2026.
December 4, 2025 at 6:44 PM
The Call for Trainers is now OPEN for #DEFCONTraining Las Vegas at #DEFCON 34!
Do you have expertise in emerging threats, defensive strategies, or cutting-edge security techniques? We want to hear from you!
Visit training.defcon.org to submit your application by January 12, 2026.
Do you have expertise in emerging threats, defensive strategies, or cutting-edge security techniques? We want to hear from you!
Visit training.defcon.org to submit your application by January 12, 2026.
The #defconsingapore Calls for Papers and Demo Labs are now OPEN. If you've got a presentation or open source project to share with the #defcon community, the time is now. Deadline is Feb 15, 2026.
Info here:
CFP: defcon.org/html/defcon-...
Demo Labs:
defcon.org/html/defcon-...
Info here:
CFP: defcon.org/html/defcon-...
Demo Labs:
defcon.org/html/defcon-...
December 3, 2025 at 11:30 PM
The #defconsingapore Calls for Papers and Demo Labs are now OPEN. If you've got a presentation or open source project to share with the #defcon community, the time is now. Deadline is Feb 15, 2026.
Info here:
CFP: defcon.org/html/defcon-...
Demo Labs:
defcon.org/html/defcon-...
Info here:
CFP: defcon.org/html/defcon-...
Demo Labs:
defcon.org/html/defcon-...
#defconmovienight steps into December with the first of several arguably Xmas themed movies. Join us at 8pm PST Saturday, 12/6 for ‘Brazil’. We’ll be hanging out in the movie-night-text channel of the Discord (discord.gg/defcon) trying to keep flies out of the printer.
December 3, 2025 at 1:29 AM
#defconmovienight steps into December with the first of several arguably Xmas themed movies. Join us at 8pm PST Saturday, 12/6 for ‘Brazil’. We’ll be hanging out in the movie-night-text channel of the Discord (discord.gg/defcon) trying to keep flies out of the printer.
Reposted by DEF CON
EFF 🤝 @nostarchpress.bsky.social. Support the fight for privacy and free speech online when you grab this @humblebundle.com book bundle today! www.humblebundle.com/books/hacki...
Humble Tech Book Bundle: Hacking by No Starch
Turn your curiosity about computer hacking into a fast-paced, proven, and practical career with the latest Humble Tech Book Bundle!
www.humblebundle.com
December 1, 2025 at 10:00 PM
EFF 🤝 @nostarchpress.bsky.social. Support the fight for privacy and free speech online when you grab this @humblebundle.com book bundle today! www.humblebundle.com/books/hacki...
Reposted by DEF CON
📣🎬 Calling all filmmakers & artists! Celebrate Public Domain Day in January 2026 by making a 2–3 min short film using public domain works from 1930 & earlier.
📆 Deadline: January 7, 2026
💰 First prize: $1,500
ℹ️ Details 👉 blog.archive.org/2025/12/01/2...
#contest #filmmaking #publicdomain
📆 Deadline: January 7, 2026
💰 First prize: $1,500
ℹ️ Details 👉 blog.archive.org/2025/12/01/2...
#contest #filmmaking #publicdomain
December 1, 2025 at 10:45 PM
📣🎬 Calling all filmmakers & artists! Celebrate Public Domain Day in January 2026 by making a 2–3 min short film using public domain works from 1930 & earlier.
📆 Deadline: January 7, 2026
💰 First prize: $1,500
ℹ️ Details 👉 blog.archive.org/2025/12/01/2...
#contest #filmmaking #publicdomain
📆 Deadline: January 7, 2026
💰 First prize: $1,500
ℹ️ Details 👉 blog.archive.org/2025/12/01/2...
#contest #filmmaking #publicdomain
We are hosting a #defcon Singapore chill out meetup Dec 5 2025. Everyone is invited.
Community partners, Div0, Range Village and DDAS will be there too!
8pm - Drinks, Chill
Georges@ taiseng
30 Tai Seng St., #01-07 Bread Talk IHQ, Singapore 534013
See you there!
RSVP: forms.gle/3TNqv7mRCTGbLTKA7
Community partners, Div0, Range Village and DDAS will be there too!
8pm - Drinks, Chill
Georges@ taiseng
30 Tai Seng St., #01-07 Bread Talk IHQ, Singapore 534013
See you there!
RSVP: forms.gle/3TNqv7mRCTGbLTKA7
December 1, 2025 at 12:27 AM
We are hosting a #defcon Singapore chill out meetup Dec 5 2025. Everyone is invited.
Community partners, Div0, Range Village and DDAS will be there too!
8pm - Drinks, Chill
Georges@ taiseng
30 Tai Seng St., #01-07 Bread Talk IHQ, Singapore 534013
See you there!
RSVP: forms.gle/3TNqv7mRCTGbLTKA7
Community partners, Div0, Range Village and DDAS will be there too!
8pm - Drinks, Chill
Georges@ taiseng
30 Tai Seng St., #01-07 Bread Talk IHQ, Singapore 534013
See you there!
RSVP: forms.gle/3TNqv7mRCTGbLTKA7
#defconmovienight is finishing #noirvember strong with 'Cry Danger' from 1951. Unjustly jailed con gets out and seeks to set things right. Nothing goes to plan. Join us at 8pm PST in the movie-night-text channel of the discord (Discord.gg/defcon). Watch your pockets, bring an alibi. #defcon
November 26, 2025 at 12:15 AM
#defconmovienight is finishing #noirvember strong with 'Cry Danger' from 1951. Unjustly jailed con gets out and seeks to set things right. Nothing goes to plan. Join us at 8pm PST in the movie-night-text channel of the discord (Discord.gg/defcon). Watch your pockets, bring an alibi. #defcon
Reposted by DEF CON
Make sure you catch my latest for @wired.com -- with comment from @defcon.bsky.social and @blackhatevents.bsky.social founder Jeff Moss, and @adafruit.com founder + engineer Limor Fried: www.wired.com/story/this-h...
This Hacker Conference Installed a Literal Anti-Virus Monitoring System
At New Zealand's Kawaiicon cybersecurity convention, organizers hacked together a way for attendees to track CO2 levels throughout the venue—even before they arrived.
www.wired.com
November 22, 2025 at 2:53 AM
Make sure you catch my latest for @wired.com -- with comment from @defcon.bsky.social and @blackhatevents.bsky.social founder Jeff Moss, and @adafruit.com founder + engineer Limor Fried: www.wired.com/story/this-h...
Reposted by DEF CON
Friendly reminder:
Keep yourself or a hacker in your life looking sharp this holiday season by checking out our goodies at shop.defcon.org. Get our extremely crispy holiday sweater while supplies last, and check out the other gems we have available.
#defcon #sofreshandsocleanclean
Keep yourself or a hacker in your life looking sharp this holiday season by checking out our goodies at shop.defcon.org. Get our extremely crispy holiday sweater while supplies last, and check out the other gems we have available.
#defcon #sofreshandsocleanclean
November 22, 2025 at 1:02 AM
Friendly reminder:
Keep yourself or a hacker in your life looking sharp this holiday season by checking out our goodies at shop.defcon.org. Get our extremely crispy holiday sweater while supplies last, and check out the other gems we have available.
#defcon #sofreshandsocleanclean
Keep yourself or a hacker in your life looking sharp this holiday season by checking out our goodies at shop.defcon.org. Get our extremely crispy holiday sweater while supplies last, and check out the other gems we have available.
#defcon #sofreshandsocleanclean
Reposted by DEF CON
Previous @defcon.bsky.social badge gets some updates and additional resources media.defcon.org/DEF%20CON%20...
November 17, 2025 at 9:19 PM
Previous @defcon.bsky.social badge gets some updates and additional resources media.defcon.org/DEF%20CON%20...
Another #noirvember classic scheduled for the #defconmovienight this weekend. ‘The Prowler’ from 1951 - directed by Fritz Lang and written by Dalton Trumbo in the Blacklist era.
We’ll be lurking in the shadows in the Discord (Discord.gg/defcon) at 8pm PST Saturday. Join us, won’t you?
#defcon
We’ll be lurking in the shadows in the Discord (Discord.gg/defcon) at 8pm PST Saturday. Join us, won’t you?
#defcon
November 17, 2025 at 11:47 PM
Another #noirvember classic scheduled for the #defconmovienight this weekend. ‘The Prowler’ from 1951 - directed by Fritz Lang and written by Dalton Trumbo in the Blacklist era.
We’ll be lurking in the shadows in the Discord (Discord.gg/defcon) at 8pm PST Saturday. Join us, won’t you?
#defcon
We’ll be lurking in the shadows in the Discord (Discord.gg/defcon) at 8pm PST Saturday. Join us, won’t you?
#defcon
#defconmovienight continues the celebration of #noirvember Saturday night with Fritz Lang's 'The Woman in the Window' from 1944. Join the #defcon movie night faithful at 8pm PST. We'll be staring out the window of the discord (discord.gg/defcon) in the Movie-night-text channel. See you there.
November 14, 2025 at 3:24 AM
#defconmovienight continues the celebration of #noirvember Saturday night with Fritz Lang's 'The Woman in the Window' from 1944. Join the #defcon movie night faithful at 8pm PST. We'll be staring out the window of the discord (discord.gg/defcon) in the Movie-night-text channel. See you there.
#DEFCONSIngapore update:
Now that we've wrapped up a very successful DC Bahrain, we're excited to turn our focus to #Singapore. If you want to be involved, we've still got open calls for Creators and Trainers!
More info here:
defcon.org/html/defcon-...
Let's make this thing epic.
#defcon
Now that we've wrapped up a very successful DC Bahrain, we're excited to turn our focus to #Singapore. If you want to be involved, we've still got open calls for Creators and Trainers!
More info here:
defcon.org/html/defcon-...
Let's make this thing epic.
#defcon
November 10, 2025 at 11:55 PM
#DEFCONSIngapore update:
Now that we've wrapped up a very successful DC Bahrain, we're excited to turn our focus to #Singapore. If you want to be involved, we've still got open calls for Creators and Trainers!
More info here:
defcon.org/html/defcon-...
Let's make this thing epic.
#defcon
Now that we've wrapped up a very successful DC Bahrain, we're excited to turn our focus to #Singapore. If you want to be involved, we've still got open calls for Creators and Trainers!
More info here:
defcon.org/html/defcon-...
Let's make this thing epic.
#defcon
It's been great making so many new friends at #defconbahrain! Many thanks to the creators who put the event together, the attendees who shared their time with us and our supremely gracious hosts.
#defcon #passiton
#defcon #passiton
November 6, 2025 at 7:44 PM
It's been great making so many new friends at #defconbahrain! Many thanks to the creators who put the event together, the attendees who shared their time with us and our supremely gracious hosts.
#defcon #passiton
#defcon #passiton
Some more images from the calm before #defconbahrain - our demo labs prepped for demonstration and the info desk ready to inform.
You can find out more #defcon at the #arabinternationalcybersecurityconference here:
defcon.org/html/defcon-...
You can find out more #defcon at the #arabinternationalcybersecurityconference here:
defcon.org/html/defcon-...
November 4, 2025 at 10:25 PM
Some more images from the calm before #defconbahrain - our demo labs prepped for demonstration and the info desk ready to inform.
You can find out more #defcon at the #arabinternationalcybersecurityconference here:
defcon.org/html/defcon-...
You can find out more #defcon at the #arabinternationalcybersecurityconference here:
defcon.org/html/defcon-...
#defcon crew beginning to arrive for #defconbahrain.
Trainings begin Nov 3, and the event runs Nov 5 and 6.
more info here:
defcon.org/html/defcon-...
Trainings begin Nov 3, and the event runs Nov 5 and 6.
more info here:
defcon.org/html/defcon-...
November 2, 2025 at 1:27 AM
#defcon crew beginning to arrive for #defconbahrain.
Trainings begin Nov 3, and the event runs Nov 5 and 6.
more info here:
defcon.org/html/defcon-...
Trainings begin Nov 3, and the event runs Nov 5 and 6.
more info here:
defcon.org/html/defcon-...
#ICYMI: #DEFCON Training is Coming to #Singapore!
Calling all security professionals and trainers: applications are still open for the inaugural DEF CON Training session in Singapore!
🔗 Submit by November 10: training.defcon.org/pages/2026-s...
✉️ Questions? training@defcon.org.
Calling all security professionals and trainers: applications are still open for the inaugural DEF CON Training session in Singapore!
🔗 Submit by November 10: training.defcon.org/pages/2026-s...
✉️ Questions? training@defcon.org.
October 30, 2025 at 9:09 PM
#ICYMI: #DEFCON Training is Coming to #Singapore!
Calling all security professionals and trainers: applications are still open for the inaugural DEF CON Training session in Singapore!
🔗 Submit by November 10: training.defcon.org/pages/2026-s...
✉️ Questions? training@defcon.org.
Calling all security professionals and trainers: applications are still open for the inaugural DEF CON Training session in Singapore!
🔗 Submit by November 10: training.defcon.org/pages/2026-s...
✉️ Questions? training@defcon.org.
Good News, Everyone! We have the official dates for #DEFCON34! And to make up for the delay, we also have the dates for #DEFCON35!
Please join us at the Las Vegas Convention Center August 6-9 in 2026 and August 5-8 in 2027.
Save the dates, friends. It'll be here before you know it.
#defcon
Please join us at the Las Vegas Convention Center August 6-9 in 2026 and August 5-8 in 2027.
Save the dates, friends. It'll be here before you know it.
#defcon
October 29, 2025 at 6:49 PM
We’re closing out Spooky Month at the #defconmovienight with the modern zombie classic
“Shaun of the Dead”. We’ll be at the Winchester (discord.gg/defcon) in the movie-night text channel at 8pm PDT this Saturday. Next up, #Noirvember.
#defcon
“Shaun of the Dead”. We’ll be at the Winchester (discord.gg/defcon) in the movie-night text channel at 8pm PDT this Saturday. Next up, #Noirvember.
#defcon
October 23, 2025 at 8:31 PM
We’re closing out Spooky Month at the #defconmovienight with the modern zombie classic
“Shaun of the Dead”. We’ll be at the Winchester (discord.gg/defcon) in the movie-night text channel at 8pm PDT this Saturday. Next up, #Noirvember.
#defcon
“Shaun of the Dead”. We’ll be at the Winchester (discord.gg/defcon) in the movie-night text channel at 8pm PDT this Saturday. Next up, #Noirvember.
#defcon
