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DEF CON

@defcon

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22,090

Hacking Conference

Las Vegas, NV
Joined May 2008
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@defcon
DEF CON
4 years
We don't know who needs to hear this right now, but #defconsafemode is free to attend. You don't have to register. It starts in one week. You should join us.
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@defcon
DEF CON
6 years
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@defcon
DEF CON
6 years
After the meeting with @elonmusk we are seriously considering #DEFCON Mars in 2028.
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@defcon
DEF CON
4 years
#defcon28 has entered Safe Mode. The #DEFCONiscanceled meme has crossed over into real life, courtesy of #COVID19 . In early March we had hopes that things would be stable by August. That is no longer realistic.
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@defcon
DEF CON
5 years
#defcon27 insta-meme
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@defcon
DEF CON
3 years
Dan Kaminsky’s @dakami passion, creativity, desire to learn and teach really help influence both #defcon and @BlackHatEvents in the early years. He became an icon in all the positive ways and we looke up to him. RIP Hacker.
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@defcon
DEF CON
3 years
It’s not our DNS this time.
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@defcon
DEF CON
2 years
This was fun, right? We should do it again next year. It’s been a crazy few years, but it’s rewarding beyond measure to see how our community has stuck together, looked out for each other and finally come home for a big anniversary. Thanks for another amazing DEF CON. ☠️ ❤️ U.
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@defcon
DEF CON
6 years
Cool visualization/explainer of every byte of a TLS connection.
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@defcon
DEF CON
2 years
@esizkur We are glad our art inspires your project, but please don’t use our trademark without permission.
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@defcon
DEF CON
3 months
#defcon escapes another brush with cancellation! After 25 years w/Caesars, they cancelled our contract for #defcon32 . A lot of conferences might have buckled, but not DEF CON. Hackers make a way out of no way. Uncanceled DEF CON 32 will now be held at the Las Vegas Convention…
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@defcon
DEF CON
9 months
DEF CON 31 is in the books, and the vibes were immaculate. We want to thank the DEF CON community for bringing all that good energy with you and making this such a memorable con. Good energy and stickers, and badges, and puzzles and hugs and for some reason Malört. You really are…
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@defcon
DEF CON
3 years
It’s official. DEF CON season has arrived, and it’s time to announce the theme! The theme for DEF CON 29 is (imagine a drum roll here) ‘You Can’t Stop the Signal’. Full details and style guide here:
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@defcon
DEF CON
3 years
It's a mighty thing to truly comprehend how things work, mightier still to transmit that understanding to others. In memory of master teacher @dakami , a list of videos full of Dan's explanatory magic . Feel free to add your favorite Dan links in the thread.
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@defcon
DEF CON
1 year
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@defcon
DEF CON
5 years
Sorry everyone but we are going to offline for a while, someone stole our power meter. Not kidding. #DEFCON
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@defcon
DEF CON
4 years
We aren’t taking any chances
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@defcon
DEF CON
2 years
The real stars of ‘The Matrix’ are Nmap and the Nokia 8110. #truefacts
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@defcon
DEF CON
9 months
#DEFCON Evacuation Update, 8am Sunday Edition: Last night we were asked to evacuate the building due to a report of a suspicious package. Local police and fire departments conducted a thorough investigation and ultimately determined that the package was safe. They also conducted…
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@defcon
DEF CON
5 years
We had a bunch of #defcon branded chairs around the chill-out areas, and not all of them made it back. We understand this can happen - just want to make sure they’re having fun and found good homes. If you see one, post a pic so we don’t worry. #defconchairadventures
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@defcon
DEF CON
5 years
Don't know where to start with your #DEFCON27 #badge ? There's a nice and thorough write up on /r/defcon that will definitely get you moving.
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@defcon
DEF CON
5 years
And so it begins.... #defcon27 #linecon
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@defcon
DEF CON
8 months
It's that time of the year again - time to block off a weekend or two and watch videos from #defcon31 on #YouTube ! We've got all the main stage talks, a bunch of Village Stage talks, War Stories and the Policy series, all waiting to entertain and…
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@defcon
DEF CON
6 years
If there is a more delightful old-school stock photo of #computingwhileawesome , we want to see it. Snapshot from the heroic era of mobile computing
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@defcon
DEF CON
9 months
#defcon Update on the Forum evacuation: It looks like this is going to take a while to resolve. In an abundance of caution, we're closing the Con down for tonight. Thank you for your patience and understanding. Let's reconvene in the morning.
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@defcon
DEF CON
9 months
#defcon in the news, retro subway card edition
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@defcon
DEF CON
2 years
The #Defcon30 Theme is... Hacker Homecoming! It's been a crazy couple of years, but we're looking forward to reuniting in Vegas with more of our hacker family next summer. We hope you're excited about it, too. Full theme announcement is here:
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@defcon
DEF CON
6 years
The time has come to announce the #defcon 26 theme: #1983 . think of it as T Minus One in the countdown to 1984. We can't wait to see where you take it, hacker fam.
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@defcon
DEF CON
4 years
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@defcon
DEF CON
4 years
Our deepest thanks to #defcon community for showing up for #DEFCONSafeMode . Your enthusiasm and generosity are a very bright spot in a tough year. Thanx to the Goons, staff and Villagers who run this thing for stepping up and doing us proud. Let's stay connected. DEF CON ♥️U.
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@defcon
DEF CON
4 years
So apparently YouTube has a daily upload limit. We found this out as we publish the #DEFCONSafeMode presentations. Who knew a cancelled #defcon would produce so much more content? This community is amazing.
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@defcon
DEF CON
3 years
In what dark loom are casino carpets forged? By what feral, hopeless mind are they conceived?
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@defcon
DEF CON
9 months
Update on the evacuation of Caesars Forums: We apologize for the interruption of festivities. The venue was evacuated in compliance with the property safety teams. We will share more as we know more. In the meantime, consider checking out the #defcon events at the other con…
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@defcon
DEF CON
9 months
#defcon31 update - the final versions of all the slide presentations from #defcon are posted up on our media server, awaiting your perusal in a brand new .rar. Get thee to to kickstart your mental embiggening.
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@defcon
DEF CON
5 years
Since #cultofthedeadcow is ruling the news cycle today, a #defcon7 memory post.
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@defcon
DEF CON
5 years
For those who have not caught on the secret is now out: @joegrand (AKA Kingpin) creator of the first electronic badge, is back in action and has designed this years badge!
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@defcon
DEF CON
6 years
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@defcon
DEF CON
2 years
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@defcon
DEF CON
3 years
For those asking if the CDC announcement changes our plans about requiring masks at #defcon 29 in-person, no it does not. Masks still required to keep our hackers healthy.
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@defcon
DEF CON
6 years
"It's mathematically impossible to introduce an encryption backdoor that only law enforcement can find and use."
@TheRegister
The Register
6 years
FBI says it can't unlock 8,000 encrypted devices, demands backdoors for America's 'public safety'
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@defcon
DEF CON
4 years
Starting to build a giant #DEFCON Safe Mode torrent of everything we have to date. Over 425+ village and contest videos, CTF packet captures, and about 20 hours of music. We should launch it Saturday sometime!
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@defcon
DEF CON
7 years
Calm before the con.
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@defcon
DEF CON
5 years
#DEFCON27 ’s Support Hotline Attendees can reach #DEFCON staff from 8am to 4am to anonymously report behavior violating our code of conduct or for an empathic ear - call or text +1 (725) 222-0934. Trained community volunteers will be standing by to help .
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@defcon
DEF CON
9 months
The #tinfoilhat contingent at #defcon never disappoints.
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@defcon
DEF CON
9 months
Big ups to the Goons who managed to get everything open on time. From the outside it may not always be obvious, but every #defcon is a bit of a miracle powered by the love and enthusiasm of hundreds of miracle workers. Thanks to everyone who makes the magic.
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@defcon
DEF CON
5 years
75 percent of #DEFCON27 speakers were first timers - with 10% more self-identified women over last year. #facts
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@defcon
DEF CON
3 years
From @thedarktangent 's #defcon forums post: " #defcon29 will be a hybrid con, partially in-person and partially online...This year is unique and will require us to simplify our plans, and be flexible." Read all of DT's announcement on his blog:
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@defcon
DEF CON
3 years
Do not do this. It’s a code of conduct violation and will be treated as such. Also, if you see someone doing this please notify a Goon so we can deal with it.
@shortxstack
Whitney Champion 🍪🚀 infosec.exchange/@shortstack
3 years
idk which one of you dipshits clipped me in the paris hallway but (and it's sad that this needs to be said) don't touch people who don't want to be touched find a new @defcon game
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@defcon
DEF CON
5 years
#defcon28 will be August 6-9 at the brand new, super deluxe #caesarsforum . Registration opens Monday.
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@defcon
DEF CON
1 year
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@defcon
DEF CON
4 years
#defcon29 dates announced - August 5-8 at Paris and Bally’s. Closing ceremonies in the books. Discord staying up, in one way or another. Thanks to everyone for making this amazing. Best. Community. Ever. ❤️
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@defcon
DEF CON
3 years
Thank you for an amazing #defcon29 . The past few years have been crazy, but you can’t stop the signal, even with global cataclysm. We are so happy to be reunited with so many of our friends, both here in Las Vegas and in the virtual con space. It’s good to be together.
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@defcon
DEF CON
4 years
Just because #DEFCONiscanceled doesn’t mean you can’t still get the shirt. Gotta keep your quarantine look hacker fresh.
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@defcon
DEF CON
2 years
Good news.
@TheRegister
The Register
2 years
Journalist won't be prosecuted for pressing 'view source'
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@defcon
DEF CON
9 months
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@defcon
DEF CON
3 years
If this high-profile tweet has you interested in election security, allow us to share some resources: Most recent report from @VotingVillageDC : A playlist of our most recent election security talks: There’s a lot to learn.
@realDonaldTrump
Donald J. Trump
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@defcon
DEF CON
6 years
MIT Has Taught the Machines How to Use Wifi to See People Through Walls
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@defcon
DEF CON
9 months
Returning for #DEFCON31 - the S.O.D.A. (Shell on Demand Appliance) Machine! S.O.D.A. is an unassuming vending machine that is fresh out of sodapop - but it grants creds to your very own anonymous VM running right there at #DEFCON . Visit S.O.D.A. in the Chillout Lounge of Caesars…
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@defcon
DEF CON
6 years
Confidential to those who aren’t with us in Vegas but wish they were - the secret internet feed is at . have some #defcon26 #dc101 goodness on us!
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@defcon
DEF CON
10 months
DEF CON 31 is officially a month away! This means we’re going to see some evergreen social media posts come back around, like: DEF CON is canceled (cancel level is 0 and holding) DEF CON is coming and I’m not ready (deep breaths, you’ll be fine) DEF CON will cast your precious…
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@defcon
DEF CON
6 years
Time for the annual #defcon #selfcare reminder. Hungry? Eat. Feeling sleepy, sleep. #Stayhydrated . Comfortable shoes and fresh socks. Vegas blocks are gigantic, no matter how normal they look on maps. Ask for help if you need it. We love you - take care of yourself.
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@defcon
DEF CON
9 months
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@defcon
DEF CON
3 years
#defcon29 is underway!
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@defcon
DEF CON
4 years
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@defcon
DEF CON
6 years
We understand that attendees want a statement from DEF CON about the Caesars room search policy. We are actively engaged with the hotel, seeking answers and a clear policy document we can share with you. Please know that we hear your concerns and we’ve shared them with Caesars.
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@defcon
DEF CON
2 years
Heads up- the #DEFCON30 videos are gonna hit YouTube a little early this year. You might want to block off some time in October. We apologize in advance for any effect on workplace productivity.
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@defcon
DEF CON
3 years
Saying goodbye to 2020 feels pretty ok. Saying goodbye to Flash feels pretty good too.
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@defcon
DEF CON
6 years
#hackerhistory - a full decade ago, George Hotz became the first person reported to successfully carrier-unlock an iPhone. Much jailbreaking drama ensued. Does it feel like it's really been ten years?
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@defcon
DEF CON
4 years
Just posted all the #DEFCON Safe Mode village talks we currently have to and will start YouTube uploads and tagging. Enjoy!
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@defcon
DEF CON
6 years
Cool writeup about solving the #defcon26 badge. #badglife #defcon
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@defcon
DEF CON
9 months
The battle between elegance and brute force continues in the halls of #DEFCON31 .
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@defcon
DEF CON
4 years
The #DEFCONSafeMode #badge is here! Created by the inimitable @1o57 , full of music & challenges to give you a warm #DEFCON glow just in time for #dc28 . Thanks for all your support as we navigate this strange year together. DEF CON ❤️ U. #badgelife
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@defcon
DEF CON
7 years
Do you want hackers? Cause this is how you get hackers.
@markfidelman
Mark Fidelman
7 years
May the force be with this dad
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@defcon
DEF CON
8 years
#defcon 24 is officially in the books. Thank you all for making it so great. See you all at #Caesars for DC 25! 📞☠💾🔑❤️❤️❤️
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@defcon
DEF CON
6 years
IT'S ALIVE! Welcome to the #defcon #CallforEverything ! We’re open for proposals in the following areas: Talks, Workshops, Villages, Contests, Events, Parties, Music, Demo Labs, Press, and Vendors! Let's light this candle, hacker fam! #defcon26
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@defcon
DEF CON
6 years
Caesars Update: A team from DEF CON management met with Caesars on Tuesday. They are looking into the reports we presented, and we’ll share what we can as those investigations play out. Here’s an overview of the current policy as shared with us:
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@defcon
DEF CON
9 months
hack the planet, sure. but why stop there? #hackasat #defcon31
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@defcon
DEF CON
2 years
once upon a time, you could have a supercomputer that doubled as a statement sofa.
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@defcon
DEF CON
3 years
#DEFCON29 is our first hybrid con. To keep pricing options clear, we’ve made a little chart. If you get your badge thru #BlackHat you’ve got the $300 onsite option. Thank you for supporting #DEFCON in this crazy time – we appreciate the love. Can’t wait to reunite at #DC29 !
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@defcon
DEF CON
8 months
15 years ago a scheduled talk by some college kids on this subject did NOT happen at #defcon . This year some high school kids brought it back around with some new twists. Enjoy 'Boston Infinite Money Glitch: Hacking Transit Cards w/o Ending Up in Handcuffs', and pass it on.…
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@defcon
DEF CON
9 months
The #defcon31 schedule is LIVE! You may now begin your planning in earnest. Find out who's dropping jewels, and where and when to snatch them up by visiting Not even a couple of weeks now - #defcon is almost here! Getting psyched is now officially legit.
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@defcon
DEF CON
5 years
#DEFCON27 #CFP Alert! NEW this year, if you are selected, #DEFCON will cover 3 hotel nights! This is on top of existing compensation. I hope that making speaking more affordable brings in more & more varied submissions. -The Dark Tangent #letsDOthis !
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@defcon
DEF CON
4 years
To get the #defconsafemode party started, we’re releasing some content early. On the #defcon media server, we’ve got all of the main stage talks, soundtrack, demo labs, art , CTF, music - take what you like. Completists out there, we see you. There’s a v. thicc torrent as well.
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@defcon
DEF CON
6 years
Please know we are not letting this go. We are sympathetic to the new terrain major hotels find themselves in, but our main commitment is to our community. We intend to stay on this until we’re satisfied these issues are resolved for next year. Updates as we get them.
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@defcon
DEF CON
4 years
Books. We love ‘em. And right now, we have a major reading opportunity happening for all of us, at the same time. What better way to make use of this moment than to read something together? Enter the #defconbookclub ! Starting In April, we’re inviting you to join us -
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@defcon
DEF CON
2 years
Good morning #DEFCON30 ! The con…is ON.
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@defcon
DEF CON
5 years
The DEF CON community never ceases to amaze. Thanks for bringing your endless compassion, curiosity and enthusiasm to our little party and making it amazing. DEF CON ❤️ you and we're already looking forward to doing this again.
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@defcon
DEF CON
5 years
Badges for #defcon27 are courtesy of legendary #defcon badge creator @joegrand aka #kingpin ! #excited
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@defcon
DEF CON
6 years
Big #defcon 26 news - we’ve got a lot more villages this year. We’ve also got more workshops. More contests. So many, in fact, that we’ve expanded the venue to include the #Flamingo across the street! More content, less traffic jams. Details at !
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@defcon
DEF CON
7 years
#riseofthemachines #goodread --> 20 years on from Deep Blue v Kasparov: how a chess match started a data revolution
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