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
Paul Frazee @pfrazee.com CTO at Bluesky. Not a nerd.
Josh Richman @joshrichman.bsky.social (he/him) Comms for @eff.org; formerly with @ericswalwell.bsky.social, Oakland Tribune/Mercury News, Express-Times, Mizzou Journalism. Booze, books, cats. Opinions here are mine all mine. https://linktr.ee/joshrichman
Lorax Horne @lorax.bsky.social Editor and writer. Tech critic. Since they are Canadian, would not rule out treachery. Doing work stuff for my local Center for Migrant Worker Rights. Donate to: https://chuffed.org/project/116311-protect-an-open-source-engineer-and-his-family
Anup Kaphle @anup.bsky.social Editor-in-Chief, Rest of World. Alum of The Washington Post, BuzzFeed News, Roads & Kingdoms, and The Kathmandu Post. Eater of goats.🇳🇵
Erin Biba @erinbiba.bsky.social She/Her
Freelance Science Journalist. Fact Checker.
NatGeo, BBC, SciAm, NBC News, PopSci, WIRED, and others.
Hire me to fact check your book.
I post about Jewish stuff, disability, Star Trek, and The Buffalo Bills.
Jersey girl.
Cyd Harrell @cydharrell.bsky.social cyberpunk is a warning, not a manual
she/her. dayjob & usual location: City & County of San Francisco (this is a personal account)
ex-18F; on the board @publicgood.tech ; wrote a small book about doing this: https://cydharrell.com/book/
Tom Warren @tomwarren.co.uk Senior Correspondent @theverge.com ║ Sign up to Notepad, my weekly newsletter on Microsoft's big bets at http://theverge.com/notepad ║ Tips? msg me on Signal: tomwarren.01
Frederic Jacobs @fredericjacobs.com www.fredericjacobs.com
https://ger.mx/A-RGsldmQt0iXfnzPgXNzLzA5_jvDbWHabqz1yJrt2ma#did:plc:oxwmqopgbm3driwzues7odpz
Martijn Grooten @martijngrooten.bsky.social Threat researcher, rights supporter, obsessive reader, marathon runner, eternal traveler, serial migrant, music blogger, lapsed mathematician.
https://lapsedordinary.net/
Signal: martijngrooten.37
Jake Williams @malwarejake.bsky.social Breaker of software, responder of incidents, IANS Faculty, VP R&D Hunter Strategy.
Deviant Ollam ツ @deviantollam.bsky.social Philadelphian in Cascadia. Vociferous champion for Oxford commas, two spaces after a period, and ellipses. I break into buildings. 🔓
"Even if the world were ending tomorrow, I would still plant a tree." 🌲
(he/they)
Alex Stamos @stamos.org CPO/CSO of Corridor.dev, teaching at Stanford.
Joseph Cox @josephcox.bsky.social Hacking/crime/privacy journalist. Author of DARK WIRE, buy here: https://www.hachettebookgroup.com/titles/joseph-cox/dark-wire/9781541702691/#preorder Co-founder of 404 Media. Signal: joseph.404 Email: joseph@404media.co
Tanya Janca | SheHacksPurple @shehackspurple.bsky.social Secure Code Trainer - Best-selling author of Alice and Bob Learn Secure Coding & Alice and Bob Learn Application Security. #AppSec she/her
https://shehackspurple.ca 🌻
Maddie Stone @maddiestone.bsky.social Security Researcher at Google Project Zero. 0-days all day. Love all things reverse engineering. she/her
Pwnallthethings @pwnallthethings.bsky.social Just thinking out loud.
Andy Greenberg @agreenberg.bsky.social Writer for WIRED. Author of SANDWORM. Latest book, TRACERS IN THE DARK: The Global Hunt for the Crime Lords of Cryptocurrency, out now. agreenberg@wired.com. Andy.01 on Signal.
Kashmir Hill @kashhill.bsky.social Journalist, currently at The New York Times. I cover privacy, technology, A.I., and the strange times we live in. Named after the Led Zeppelin song. Author of YOUR FACE BELONGS TO US. (Yes, in my head it will always be All Your Face Are Belong To Us)
Lesley Carhart @hacks4pancakes.com I am eminently qualified to speak from experience about a variety of dumpster fires.
ICS DFIR at Dragos, martial artist, marksman, humanist, level 14 Neutral Good rogue, USAF retired. I post *very serious* things about infosec. Thoughts my own. Enby. 🏳️🌈
Meredith Whittaker @meredithmeredith.bsky.social President of Signal, Chief Advisor to AI Now Institute 
Jorts (and Jean) @jortsthecat.bsky.social Jorts the cat.
Jean helps me.
Kelly Shortridge @shortridge.bsky.social software resilience, cybersecurity, complex systems | chief product officer @fastly.com | nyc
“In the information society, nobody thinks. We expected to banish paper, but we actually banished thought.”
kellyshortridge.com
@swagitda_ on Twitter
the grugq @thegrugq.bsky.social 
Azeria @azeria-labs.com Founder of Azeria Labs, Trainer, Author of Blue Fox: Arm Assembly Internals & Reverse Engineering
SwiftOnSecurity @swiftonsecurity.com computer security person. former helpdesk
Lorenzo Franceschi-Bicchierai @lorenzofb.bsky.social Real-time historian of the late cyber capitalist era @TechCrunch, writing about the intersection of hackers, human rights, and spies.
Also writing a book about Hacking Team and the history of government spyware.
☎️ Signal: +1 917 257 1382
Marc Rogers @cjunky.bsky.social Ramblings of a Mad Englishman: Hacker @ BBC's Real Hustle & Mr Robot. Head of Sec @ DEF CON. Founder @ CTI-League, Ransomware Taskforce, w00w00, CDC NSF, (He/Him).
Also
Twitter @marcwrogers
Mastodon cj@chaos.social
Electronic Frontier Foundation @eff.org We're the Electronic Frontier Foundation. We're a nonprofit that fights for your privacy and free speech online. Find all of EFF's social media accounts at eff.org/social.
Blue Team Con @blueteamcon.com Blue Team Con is an annual cybersecurity conference built for defenders, inclusive of anyone interested in safeguarding organizations.
https://blueteamcon.com
Next Conference:
Training: 10-11 September 2026
General Conference: 12-13 September 2026
Leigh-Chantelle @leigh-chantelle.bsky.social 👩🏻💻 Technology + Human Behaviour
💡Startup: #DailyPhD https://www.dailyphd.com
🏛 PhD research on Autonomous Vehicles & Electric Vehicles in Australia
📝 Substack: Things Friends Forward
🔗 http://digital-equilibrium.com
UC Berkeley Center for Long-Term Cybersecurity @cltcberkeley.bsky.social Helping society anticipate and address tomorrow's information security challenges, in order to amplify and extend the upside of the digital revolution.
Jeff Moss @thedarktangent.defcon.social.ap.brid.gy Founder of DEF CON & Black Hat. Maintainer of infocon.org.
Member of the UK Gov Cybersecurity Advisory Board & The Council on Foreign Relations.
Working to […]
🌉 bridged from ⁂ https://defcon.social/@thedarktangent, follow @ap.brid.gy to interact
The Hacker News @thehackernews.bsky.social #1 Most trusted publication for breaking cybersecurity and hacking news, insights, and analysis for information security professionals.
Ali C @alic.bsky.social Human <--> techie translator. Organ donation recipient/advocate.
🏳️🌈🏳️⚧️ ally. Londoner in the West Country. Views are mine, you can't have them.
Cristin Flynn Goodwin @cristin.bsky.social All things cybersecurity, incident response, threat Intel, AI, and law. Founded @AdvancedCyberLaw.com after forever @MSFT. Host of @AdvancingCyber.com Podcast on Apple Podcast and Spotify. Mom to humans, dog, and cat. Seeks big mountains and lakes.
Simon Petersen @simonpetersen.net Associate Information Security Consultant at DHL IT Services*.
Danish 🇩🇰 origin - living in Prague 🇨🇿
* I don't speak on behalf of DHL.
https://simonpetersen.net
Luca Zorloni @lukelike.bsky.social Giornalista, mi occupo di tecnologia e innovazione. Già direttore di Wired Italia 🌈 Iscriviti a Question Time, la mia newsletter 👉 https://open.substack.com/pub/questiontime
Black Hat @blackhatevents.bsky.social The world's premier Technical Cybersecurity Conference Series
Alexandra Paulus @alexandrapaulus.bsky.social Researcher for cybersecurity + (defense) tech @swp-berlin.org.
Co-Host Cybernation Podcast.
Currently:
- Harnessing biotechnology for national security
- Holding software vendors accountable for insecure software
- mitigating Europe's US tech dependencies
Maggie Miller @maggiemiller.bsky.social Cybersecurity reporter for Politico based in DC. Also history, dog, and good TexMex taco nerd.
mmiller@politico.com, DM for Signal
jen @thejenlife.bsky.social cybersecurity & privacy lawyer. dog butler.
feral club rat turned runner. always hungry.
this is a collection of my fleeting thoughts.
The Cyber (in)Security Hub @cybersecurity.bsky.social Former NSA hacker; Cyber Expert; Current CISO, TV Cyber Expert & Keynote Speaker
Twitch.tv/cyber_insecurity
topmate.io/neal_bridges
https://linktr.ee/cyber_insecurity
#cybersecurity #redteam #hacking #blueteam #securityoperations #ciso
Kim Crawley (she/her) 😷🍉 @stopgenai.com No DMs!
Formerly exploited cybersecurity professor at OPIT. Previously AT&T, BlackBerry, Hack The Box.
Founder of StopGenAI.com
Ultimate Cybersecurity Careers Guide
Hacker Culture: A to Z, O'Reilly
https://kimcrawley.com
Brian Honan @brianhonan.bsky.social Irish cybersecurity pro, author, speaker, and commentator.
CEO of BH Consulting, Head of Ireland's first CSIRT - IRISSCERT, former member of ENISA Advisory Group, & former Special Advisor on CyberSecurity to Europol.
PGP ID 0xF1B5CF7D
Lenny Zeltser @lennyzeltser.com Builder of security products and programs. Teacher of those who run them.
https://zeltser.com
BleepingComputer @bleepingcomputer.com Breaking cybersecurity and technology news, guides, and tutorials that help you get the most from your computer. DMs are open, so send us those tips!
J Wolfgang Goerlich @jwgoerlich.bsky.social I’m the unflinchingly optimistic graybeard, wandering in this cyber dystopia. InfoSec, cybersecurity, futurist, strategist, chaotic good. The views expressed are my own. Sometimes humorously. 
Tib3rius @tib3rius.bsky.social Web App (mostly) Hacker | Cybersecurity Educator | Content Creator | Ex-Brit | Links: http://linktr.ee/tib3rius (he/him) 🇺🇸 A mostly unserious person. @therealc3rul34n.bsky.social is bae 🥰
Christian Vasquez @chrismvasq.com hi chat, im a US-based freelance journalist covering tech and cyberspace // focus = h4x0rz + infrastructure + policy // priors:
cyberscoop, e&e news, politico
signal: chrismvasq.42
https://tips.hushline.app/to/chrismvasq
Jef Kazimer 😶🌫️ 🆔 @jeftek.com Principal Product Manager @Microsoft #security focused on #Entra #Identity and Identity Governance
- 🆔 & #Cybersecurity
- Star Wars 🌟 nerd
- Disney Adult 🏰
My posts are not official support of my employer
My info and content is at https://jeftek.com
Sergiu Gatlan @serghei.bsky.social Cybersecurity/tech reporter @BleepingComputer / serghei.ro
John Hammond @johnhammond.bsky.social Hacker. Friend. Cybersecurity Researcher at Huntress.
Danny Palmer @dannypalmer.bsky.social Cybersecurity journalist and writer. Welsh. SE London.
Also likely to post about games, rugby, F1, wrestling, history & the cat.
I have a Simpsons reference for every occasion.
Helena @helenalb.bsky.social Captain Standards, Grand Empress of All Things #neuroinformagical, Doyenne of Metal and Open Science, High Priestess of Fika and #scicomm. Swede in Sweden.
Bryan White, MS Bio, MPH 🧬 @crvscience.com MS Biology, MPH, MS Cybersecurity |
Evolutionary Biologist 🪼| SciComm ✍🏻|
Bioinformatician 🖥️🧬| Public Health 🛟|
PNW 🌲|
>Art 🎨 & T-shirts 👕:
https://crvscience.com
>Public Health Data Trackers starter pack: https://go.bsky.app/N4Hnryq
gigastacey @gigastacey.bsky.social Recovering tech journalist and IoT expert who now works on cybersecurity, IoT, and right to repair for Consumer Reports.
Carly Page @carlypage.bsky.social Journalist & copywriter with 10+ years covering the tech industry, formerly senior cybersecurity reporter at TechCrunch. Bylines include IT Pro, LeadDev, The Register, The Telegraph, TIME, WIRED, & more.
☎️ Signal: carly.44
✉️ carlypagewrites@gmail.com
James Pearson @pearswick.press Visual Investigations Journalist at @Reuters.com, via Hanoi, Seoul, Pyongyang and cyberspace. Now in London.
“A bum who wrote an ignominious jumble of stories”
- North Korea ★ ★ ☆ ☆ ☆
📞Signal ID: pearswick.01
💻: pearswick.press
Matt Johansen @mattjay.com Friendly neighborhood cybersecurity guy | expect infosec news, appsec, cloud, dfir. | Long Island elder emo in ATX.
vulnu.com <- sign up for my weekly cybersecurity newsletter
Dan Goodin @dangoodin.bsky.social Cybersecurity Reporter, Ars Technica: https://arstechnica.com/author/dan-goodin/ Hungry for tips. Text me on Signal: DanArs.82. "The world isn’t run by weapons anymore, or energy, or money. It’s run by little 1s and 0s, little bits of data."
Kevin Collier @kevincollier.bsky.social I cover digital threats for NBC News. Tip me! @kevincollier.01 on signal, kevin.collier@nbcuni.com. NYC, from West Virginia.
Ryan Castellucci 🜬 @rya.nc Hacker. Enby. Administrative inconvenience. Purveyor of technically sophisticated shitposts.
Suing the UK for more gender, help with my legal bills: https://enby.org.uk/
Mastodon: https://infosec.exchange/@ryanc
Non-binary trans androgynous (they/them)
Graham Cluley @grahamcluley.com Award-winning #cybersecurity keynote speaker, writer, podcaster | Host of multi-award-winning @smashingsecurity.com podcast.
❤️ #DoctorWho, #Beatles, #Chess
He/him
🌐 https://grahamcluley.com
🎙️ https://www.smashingsecurity.com
Catalin Cimpanu @campuscodi.risky.biz ☆ Cybersecurity reporter
★ Newsletters at Risky Business
#infosec #cybersecurity
https://risky.biz
Patrick Howell O’Neill @patrickhowelloneill.com Journalist at Bloomberg News in DC. Signal: @howelloneill.01, email: patoneill1@bloomberg.net https://www.bloomberg.com/authors/AXb8dLPHBFc/patrick-howell-oneill
Christopher Soghoian @christopher.soghoian.net Work: Senior Advisor for Privacy and Cybersecurity, Office of Senator Ron Wyden.
Jenna McLaughlin @jennamclaughlin.bsky.social NPR Correspondent covering technology and national security.
Send me a tip: Text JennaMcLaughlin.54 on Signal from personal (nonwork) devices.
Kevin Beaumont @doublepulsar.com cybersecurity weather man. scanning the horizons for cloudy cyber. Expert at nothing except computer rubbish. Anti-ransomware since 2015.
Eric Geller @ericjgeller.com Senior reporter at @CybersecurityDive.bsky.social covering all things digital security. I also co-host @hothtakes.bsky.social. | Send me tips: https://ericjgeller.com/contact.html
Ned Pyle @nedpyle.com Dog butler to Indy, Darby, & Kell. Former USMC 0341. Chicago Tavern style. You may know me from years of MSFT. Or not. Was @nerdpyle before the bad times. Eat shït, nazis
Marcus Hutchins @malwaretech.com threads.com/@malwaretech
https://linkedin.com/in/malwaretech
https://marcushutchins.com
Chad Loder @chadloder.dev The purpose of a system is what it does. 🌪️ they/them
Barry Dorrans @blowdart.me Security Curmudgeon for Microsoft .NET
Do you really think work wants my social media opinions?
Not nice, but kind - @medus4.com
🇮🇪 🇬🇧 🇺🇸 
Kim Zetter @kimzetter.bsky.social Journalist - cyber/natn'l security. Speaker. Georgetown adjunct prof. Author - COUNTDOWN TO ZERO DAY: Stuxnet and the Launch of the World's First Digital Weapon
Signal: KimZ.42
https://www.zetter-zeroday.com
evacide @evacide.bsky.social Director of Cybersecurity @eff.org
Co-founder of @stopstalkerware.bsky.social
These opinions are my own, not my employers’
I did a TED talk once
Bluesky @bsky.app official Bluesky account (check username👆)
Bugs, feature requests, feedback: support@bsky.app