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  Our #Tor relay and .onion services have been upgraded to the latest security critical version. Please update your browsers and server: https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.13/ChangeLog Changes in version 0.4.9.13 - 2026-09-23 This security release includes several high severity fixes, once again originating from the LLM report firehose. The fixes affect all Tor components: relays, clients, and onion services. We strongly recommend upgrading as soon as possible. o Major...

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  DEF CON Training is headed back to Bahrain on November 9-11, at the Wyndham Grand Manama. The course line up has a bit of everything - AI, threat hunting, cryptocurrency, cloud infrastructure, and more! Now's a great time to make plans to add to your skill toolkit before the end of the year. Browse the course catalogue and secure your seat today: https://me.shop.defcon.org/collections/trainings

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  #defconmovienight kicks off the Spooky season this Saturday 8pm PDT with ‘The Innocents’ from 1961. It’s based on ‘The Turn of the Screw’ and stars Deborah Kerr. Join us in the movie-night-text channel of the discord (discord.gg/defcon) for an eerie good time. #defcon

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  #defconmovienight Spooky season entry #2 is 'Them' from 1954. It's quite possibly the best ant-based monster movie in cinema history. Join us Saturday 8pm PDT in the movie-night-text channel of the discord (discord.gg/defcon). We'll be nervously guarding our picnic goodies. #defcon

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  📢 DEF CON Training is now accepting course submissions for 2027! Whether you’re an experienced instructor or bringing a new course to the community, we’re looking for high-quality, hands-on training that helps security professionals build real-world skills. Submit your training material today for the opportunity to teach alongside the DEF CON community in locations around the world including Las Vegas, the Middle East, and Singapore! For more details, see the application. The deadline to ap...

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  Our #DefCon #Tor .onion services and relays are all going down for upgrades!

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  #defconmovienight continues our spooky season series tonight with some underappreciated Peter Jackson magic. Join us at 8pm Pacific for ‘The Frighteners’. We’ll be in the movie-night-text channel of the discord (discord.gg/defcon) keeping an eye out for Jake Busey. #defcon

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  #defconmovienight continues to bring the spooky with 1980’s ‘The Changeling’. Join us in the movie-night-text channel of the Discord (discord.gg/defcon) Saturday 8pm Pacific Time for some haunted house action. We’ll be keeping a low profile with all the lights on. #defcon

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  As expected with all the updates today, our web services are going down for an update. We will be back soon.

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  RE: https://defcon.social/@kevinthomas/117509575340096583 How cool is this?

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  Our #Tor .onion services are all going down for OS and service upgrades, be back in an hour or two!

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  Registration is open for DEF CON Singapore 2! We're returning to the fabulous Marina Bay Sands March 4-6 2027, and we're bringing the full DEF CON experience. Please join us for our special blend of hands-on villages, world class talks and all the contests, games and parties you can handle. We can't wait to rejoin our gracious hosts and friends in Singapore, and we hope we'll see you there. Register online at: https://sg.shop.defcon.org #defccon #defconsin...

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  DEF CON 34 Spotlight: Gothcon Returning for their 9th year, Gothcon invites you to come dance the night away with a line-up of some of the community's best dark dance music DJ's from across the US! Dress however you would like in whatever makes you feel comfortable and happy, and all are welcome. Saturday from 21:00 to 01:00 in LVCC - L1 - Exhibit Hall West 3 - 801 (Creator Stage 2) more info at gothcon.com #defcon #defcon34 #gothcon

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  RIP Margaret Hamilton, software engineer extraordinaire. "We had to find a way and we did. Looking back, we were the luckiest people in the world; there was no choice but to be pioneers." - Hamilton on the Apollo 11 mission https://news.mit.edu/2026/margaret-hamilton-computing-pioneer-dies-1007

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  We caught up with #DEFCON34 Badge Designer Bunnie Huang to get a little background on this year's badge. #defcon #badgelife https://youtu.be/1plmJlWSKa0

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  Update on @defconnextgen from @BiaSciLab ! https://youtube.com/shorts/YEkvj70zFx8 #defcon #defcon34 #dcnextgen

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  Let's learn about the real-time Pokemon bot action at the AI Hacking Village. #defcon #defcon34 @aivillage_dc youtu.be/Egzf_aWSxZc

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  https://www.reddit.com/r/Defcon/s/dhhKs1uENu

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  DEF CON 34 is wrapping up, and it’s been another amazing year. Thanks to the amazing DEF CON Community for bringing the good energy, curiosity and enthusiasm that makes this little desert shindig so special. From the old heads who remember why we have a dialer and a floppy disk in our logo to the brandest new newbies, you are an amazing tribe of humans. Thank you for sharing your passions, making connections and looking out for each other. Special thanks to the army of Goons who make this bi...

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  If there's no afterparty, how can we be sure there was a party at all? Fortunately, there is an afterparty. And it’s at the Liv in the extremely swanked out Fontainebleau. Your badge gets you admission and a free drink. Doors open at 10:30 pm. See you there. #defcon #defcon34 #afterparty

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  It’s not quite over, folks - there is an afterparty. And it’s at the Liv in the extremely swanked out Fontainebleau. Your badge gets you admission and a free drink. Doors open at 10:30. See you there. #defcon #defcon34 #afterparty

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  OK, who did this.

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  Looking for another #defcon34 badge? We’ve got you covered. Starting at 10am Sunday, you can pick up a spare at Registration for $100. While supplies last, of course. Punctuality is advised. #defcon #badgelife

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  It’s been a whole year. Let’s get reacquainted at the #defcon #welcomeparty! Join us at #TheIndustrial from 6:30 - 11:30pm Thursday for good music and the reliably immaculate DEF CON vibes. We have transportation covered with shuttles running from the LVCC to the party all night. Let’s light this candle.

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  Get ready for the #DefCon network! WiFi registration is open for those who want the most secure browsing experience: https://wifireg.defcon.org/

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  We will launch the #DefCon 34 Original Sound Track (OST) early Wednesday on https://media.defcon.org and at https://defconmusic.org so people can listen while they travel

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  The wait is over. Meet the #DEFCON34 badge! It’s the creation of hardware superstar Bunnie Huang, and it features his open-source, fully inspectable #baochip. #DC34 badgeholders will be the first to get their hands on a radically transparent device with all kinds of powerful possibilities - security token, password manager, HSM, pretty light generator - that we hope will keep you busy long after closing ceremonies. What will you make with yours? https://www.wired.com/story/defcon-34-badge...

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  Friendly #DEFCON34 reminder: Meta-style glasses with recording capabilities are prohibited at DEF CON. Surreptitious filming is an invasion of privacy, and will be treated as a CoC violation. There is no exception for recording glasses with prescription lenses. Be sure to pack non-violating eyewear if you need them. If you must take pictures, use recognizable personal photo equipment like a smart phone so that your intentions are clear. Get affirmative permission from the faces in your frame....

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  DEF CON 34 Spotlight: Arcade Party! The Arcade Party is back! Come play your favorite classic arcade games while jamming out to Keith Myers DJing. Your favorite custom built 16 player LED foosball table will be ready for some competitive games. Friday 20:00 in LLVC L1 W3-801 info at arcadeparty.org

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  Join the humans of Vegas at the unofficial opener of DEF CON. This Thursday Meat-Up is in the shade of Sunset Park, a quick ride from the LVCC. We stock the larder with burgers, dogs, and fixin's. We rely on you for everything else: sides, drinks, volunteering, and donations. With over 50 sq ft of heat, we have plenty of room on the grill for your personal creations. Contribute food and drinks, staff the grill, join supply runs, or donate to help cover cost. Everything left goes to the...