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. defcon.org

Responding to the #defcon32 badge controversy: DEF CON thrives on community collaboration and has operated for over 30 years successfully working with hundreds of vendors including the dozens that have helped with our badges over the years. For this year’s Raspberry Pi badges, DEF CON hired Entropic Engineering to do the hardware development and firmware. After going overbudget by more than 60%, several bad-faith charges, and with a product still in preproduction, DEF CON issued a stop work order. Any claims that DEF CON did not pay Entropic Engineering for its hardware or firmware development are false. Unfortunately, we heard that these issues with Entropic Engineering were not unique to DEF CON. We decided at that point to finish the badge on our own. We paid to send engineers to Vietnam to work onsite to finalize and test the badges in order to ensure they would be done on time for the conference. We never removed Entropic Engineering’s logo from our badge, it is still on the PCB. However, Entropic was not involved in the design and production of the case, and we removed their logo we had added as a courtesy. We were happy to still include one of their contractors on the badge panel session. Unfortunately, shortly before the talk was set to take place DEF CON became aware that unauthorized code had been included in the firmware we had paid Entropic Engineering to produce, claiming credit for the whole badge and promoting their coin wallet to solicit money from DEF CON attendees above and beyond what we had negotiated. When asked about the unauthorized code, the engineer said it had been done as a “joke” two months ago and forgot to remove it, and we decided as an organization not to have him on stage while we kept the slides in the talk giving him credit for his work. We communicated the change in advance of the talk, and this individual decided to show up for the panel anyway. He refused to leave, demanding that our security team remove him. Wanting to ensure that the other people involved in creating the badge were able to deliver their presentation, we complied with his wishes and escorted him off the stage, where he was free to continue attending the conference. Any issues of non-payment are between him and Entropic Engineering, DEF CON fulfilled its financial obligations.

After the meeting with @elonmusk we are seriously considering #DEFCON Mars in 2028.

#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.

#defcon27 #tshirtsofdefcon #defcon

#defcon27 insta-meme

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.

It’s not our DNS this time.

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.

Cool visualization/explainer of every byte of a TLS connection. tls.ulfheim.net/

We are glad our art inspires your project, but please don’t use our trademark without permission.

#defcon31 #memories #carhacking

#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 Center, on the same dates and for the first time in a while, under one roof. @thedarktangent 's full post is here: forum.defcon.org/node/248360

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 an amazing group of humans. Special thanks to all the Goons who calmly and professionally evacuated the Forum and then got the whole con back on its feet. On time, no less. Borderline miraculous. If you want to keep that DEF CON feeling going throughout the off seaon, make sure to look into DEF CON Groups in your area. Can’t find one? Consider starting one. We’re already thinking about the next one, and we hope you’ll all be there with us in this weird little summer house we’ve built together. Stay safe and look out for each other. See you soon. ☠️❤️🫵.

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: defcon.org/html/defcon-29/dc…

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.

Sorry everyone but we are going to offline for a while, someone stole our power meter. Not kidding. #DEFCON

We aren’t taking any chances

The real stars of ‘The Matrix’ are Nmap and the Nokia 8110. #truefacts

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

#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 additional sweeps of the building as a precaution before allowing our team to return and prepare for today’s con. We are working quickly to keep the original schedule on track, but please check here for additional updates before arriving at DEF CON in case we need to notify you of any changes to the schedule.

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. teddit.net/r/Defcon/comments…

And so it begins.... #defcon27 #linecon

It's that time of the year again - time to block off a weekend or two and watch videos from #defcon31 on #YouTube! piped.video/channel/UC6Om9kA… 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 enlighten you. If this is somehow not enough, There's even more to choose from on media.defcon.org. Please bingewatch responsibly, and pass it on.

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 boingboing.net/2018/09/16/ac…

#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.

#defcon #badgelife #defcon29

#defcon in the news, retro subway card edition

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: forum.defcon.org/node/240151

Wait - WinAmp is coming back? What timeline is this? techcrunch.com/2018/10/15/wi…

#defcon31 #stickerwall #stickerlife #defcon

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. defcon.org/html/defcon-26/dc…

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.

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.

The #defcon32 presentations are now live and availablle for your perusal on the #DEFCON media server, free of all commercials, data capture and pesky algorithms. We suggest clearing some disk space and personal time this weekend to snatch up some of the many, many jewels our speakers dropped in Las Vegas. While you’re on media.defcon.org you can also find the slide decks, a ton of pictures and even the DC32 soundtrack. Enjoy, learn a few things and #passiton. We’ll be posting the videos on YouTube Monday. #sharingiscaring

#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 media.defcon.org to kickstart your mental embiggening.

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 properties. Thank you for looking out for each other.

Since #cultofthedeadcow is ruling the news cycle today, a #defcon7 memory post.

In what dark loom are casino carpets forged? By what feral, hopeless mind are they conceived?

DEF CON legal update: Truth is a complete defense against defamation. The Hadnagy lawsuit against us is over. Summary judgement. Dismissed, with prejudice. We look forward to returning our full attention to the community and conference we love. We also thank everyone who came forward to help keep our community safe. We know it’s not an easy choice, but the world is better for it. This victory is encouraging. We hope it makes attendees feel safe reporting CoC violations . We hope it demonstrates our commitment to protecting attendees from misconduct. Mostly, we hope our amazing community will continue looking out for each other. We will always have your back. You can read the judgment here storage.courtlistener.com/re… . Stay tuned for a more detailed report. #defcon #legalupdate

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!

DEF CON 32 is winding down, and we want to thank our community for making this one stellar. You never fail to bring gigantic love and enthusiasm to every aspect of the Con, and we are inspired by your example. The curveball of a sudden, late-stage venue scramble could have spelled disaster, but it turned out to be a blessing in disguise. Having so much of the Con back under one roof felt great! FIrst years in a new venue always mean some hiccups and learning experiences, but you reacted with patience and grace when they happened. For this you have our eternal gratitude. As always, if you want to keep that DEF CON feeling alive in the off-season, you can and should join a DEF CON Group in your area. If you can’t find one, we encourage you to start one (defcongroups.org). We also encourage you to check out our new project DEF CON Franklin (defconfranklin.github.io) to find ways to put your skills to work where you live. As you return to your real lives, share your engagement ideas with us at defcon.social and we’ll amplify. Let’s motivate and encourage each other. Let’s stay engaged, with each other and the wider world. We’ll see you again just one short year from now in this same charming little place. In the meantime, keep learning and making new stuff, and look out for each other. ☠️❤️🫵

#defcon 19 #memories

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.

"It's mathematically impossible to introduce an encryption backdoor that only law enforcement can find and use."

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!

Calm before the con.

#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 .

The #tinfoilhat contingent at #defcon never disappoints.

75 percent of #DEFCON27 speakers were first timers - with 10% more self-identified women over last year. #facts

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.

#defcon32 Badge update: Thanks to everyone who has reached out to us about the DEF CON 32 badge. We are aware of the save issue and a fix is incoming. Later today we'll have a patch and some instructions for you at defcon.org/badge/32. We'll keep you posted in these spaces.

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: forum.defcon.org/node/236655

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.

#defcon28 will be August 6-9 at the brand new, super deluxe #caesarsforum. Registration opens Monday. Defcon.org

#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. ❤️

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.

Good news.

Just because #DEFCONiscanceled doesn’t mean you can’t still get the shirt. Gotta keep your quarantine look hacker fresh. ebay.com/str/defconcommunica…

If this high-profile tweet has you interested in election security, allow us to share some resources: Most recent report from @VotingVillageDC: media.defcon.org/DEF%20CON%2… A playlist of our most recent election security talks: piped.video/playlist?list=PL… There’s a lot to learn.

#DEFCON33 Theme Drop! “Access Everywhere.” This year we’re thinking about how to make information and services available to everyone. Available wherever you are, whoever you are, and usable no matter how you need to connect. Less walled gardens, more sunlight. You can read the theme story and get some visual inspiration at defcon.org/html/defcon-33/dc…. You can get it in a PDF on media.defcon.org. Homework assignments to get you into the vibe coming soon. We can’t wait to see where you’ll take it. See you at #DEFCON!

MIT Has Taught the Machines How to Use Wifi to See People Through Walls inverse.com/article/45929-wi…

Another friendly #defcon32 reminder: please respect the venue and only put stickers on stuff you own or the sticker wall.

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.

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 devices into The Further so only bring an abacus and semaphores (hasn’t been the case for a long time - take some reasonable precautions and pack as heavy as you like) To further explain this last issue, physical security superhero and Friend of the Con @deviantollam has produced a video. These opinions are his, of course, but they’re also pretty smart. See you soon! piped.video/watch?v=AsPeB6bc…

Confidential to those who aren’t with us in Vegas but wish they were - the secret internet feed is at dctv.defcon.org. have some #defcon26 #dc101 goodness on us!

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 Forum throughout Con.

You can find out more and ask questions on the S.O.D.A. Machine sub-forum, forum.defcon.org/node/246908 and you can also check out this video from last year's appearance for more details! piped.video/bRTS-NTT7iQ

Once hailed as unhackable, blockchains are now getting hacked - MIT Technology Review technologyreview.com/s/61297…

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.

#defcon29 is underway!

#defcon31 #rickastley

Saying goodbye to 2020 feels pretty ok. Saying goodbye to Flash feels pretty good too.

Cool writeup about solving the #defcon26 badge. deaddialect.com/articles/201… #badglife #defcon

Just posted all the #DEFCON Safe Mode village talks we currently have to media.defcon.org/ and will start YouTube uploads and tagging. Enjoy!

#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?

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.

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 ebay.com/itm/DEF-CON-SAFEMOD…

"Australia just voted to ban working cryptography. No, really." boingboing.net/2018/12/06/pm…

The battle between elegance and brute force continues in the halls of #DEFCON31.

"Picking locks with a cheap battery-powered pumpkin saw" boingboing.net/2018/10/31/pi…

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 defcon.org/html/defcon-26/dc…

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:

Do you want hackers? Cause this is how you get hackers.

#defcon 24 is officially in the books. Thank you all for making it so great. See you all at #Caesars for DC 25! 📞☠💾🔑❤️❤️❤️

And this is how the Robot Wars began... #riseofthemachines boingboing.net/2019/01/08/se…

hack the planet, sure. but why stop there? #hackasat #defcon31

once upon a time, you could have a supercomputer that doubled as a statement sofa.

#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!

#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! defcon.org/html/defcon-27/dc…

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 defcon.org/html/defcon-31/dc… Not even a couple of weeks now - #defcon is almost here! Getting psyched is now officially legit.

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. piped.video/watch?v=1JT_lTfK…

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.