Policy @ DEF CON @defconpolicy.bsky.social https://forum.defcon.org/node/244260
http://defcon.org/policy
https://linkedin.com/company/policy-def-con
https://x.com/DEFCONPolicy
Adam J O’Donnell @adamjodonnell.bsky.social Deputy CISO @ Stripe. I like art. cDc ❤️🫵
Joshua Kravitz @joshuakravitz.com Freelance Software Engineer. Policy Wonk. Improviser. Pianist. Baker. Eager to make a difference, and to have fun while doing it. @senateapprops, @congressfellows, @ossoff, @digidems, @stanford, @campkesem.
Cameron Dixon 🥄 @notgov.org Infrastructure as a (public) service. Fighting errorism with sapphire bullets of pure love. Not actually Sir Humphrey. I write my own emails.
David (DWIZZZLE) Weston @dwizzzle.bsky.social Corporate Vice President, OS Security and Enterprise @Microsoft
Center for Angletonian Thought @blackthr0atedwind.bsky.social Former national security executive, ailing distance runner, and struggling girl dad. Run a private intelligence company that supports public and private sector objectives. Based in Washington D.C.
Gianluca Varisco @gvarisco.bsky.social Security @ Google Cloud
Perri Adams @perrib.us Fmr DARPA Program Manager | Fmrly Organizing DEF CON CTF with Nautilus | RPISEC Alumna | Personal account, opinions my own, RT ≠ endorsement
Daniel W Woods @ieltop.bsky.social Economics of security and privacy. Lecturer at the University of Edinburgh + Researcher at Coalition.
Selena Larson @selenalarson.bsky.social loves dogs, sports, memes. she/her. podcaster. "bluesky's humblest resident nailfluencer 💅" - Jerry
my heart is in the west 🌵🌊 views mine.
Zakir Durumeric @zakird.com Internet Security, Trust, and Safety Researcher. Stanford CS Faculty, Censys Founder and Chief Scientist, ZMap Creator. https://zakird.com/
Lawrence Abrams @lawrenceabrams.bsky.social Ransomware, Online Security, and Malware. Owner, Editor in Chief of @bleepingcomputer.com
DM on Signal: LawrenceA.11 * Telegram: lbleeper * http://infosec.exchange/@lawrenceabrams
Ben Collins @bencollins.bsky.social Sister Spreadsheet
Danny Weitzner @djweitzner.bsky.social MIT Computer Science and Artificial Intelligence Lab
Founder, MIT Internet Policy Research Initiative
Privacy, Cybersecurity, Free Speech, Surveillance, Computer Science & Law
https://internetpolicy.mit.edu/daniel-weitzner/
Justin Sherman @jshermcyber.bsky.social Cyber, privacy, tech policy, geopolitics @ Global Cyber Strategies, Georgetown SFS, EPIC, Georgetown Law, Atlantic Council, Lawfare. Views my own. He/him
Book “Navigating Technology and National Security” out Dec. 2025
https://globalcyberstrategies.com
Meredith Whittaker @meredithmeredith.bsky.social President of Signal, Chief Advisor to AI Now Institute 
@fransrosen.bsky.social @fransrosen.bsky.social 
HackerOne @hacker0x01.bsky.social The Only official HackerOne bsky account.
Peace of mind from security's greatest minds.
#HackForGood
Space Rogue @spacerog.bsky.social I fight for the user. | L0pht Heavy Industries - ATStake - Whacked Mac Archives - Hacker News Network - Cyber Squirrel 1 | Semgrep
James Kettle @jameskettle.com Director of Research at @portswigger.net
Also known as albinowax
Portfolio: https://jameskettle.com/
jstnkndy @jstnkndy.bsky.social Infosec professional, beverage snob, and fantasy book consumer. Vice President @ Atredis Partners. Forever terrified of Kithicor.
Marten Mickos @martenmickos.bsky.social CEO in the service of AI startup CEOs.
Former CEO of HackerOne, Eucalyptus Systems, MySQL.
Geekboy @datgeekboy.bsky.social Webcomic artist, animator, average YuGiOh enjoyer.
Patreon: https://www.patreon.com/GeekboyStudios
Twitter: https://twitter.com/Geekboytweets
Commissions: OPEN
zseano @zseano.bsky.social @zseano
Ron Chan @rondanchan.bsky.social Comics + Storyboards + Illustration.
Drew some comics for PvZ, Overwatch, DOTA2.
Video games appreciator. Fanart poster. Greyhound dad. Muay Thai casual. Portland, OR | He/Him |🖕a/i
https://bio.site/RonDanChan
cje @cje.io founder @bugcrowd && co-founder @disclose_io || hacker, entrepreneur, executive, advisor || عصا موسى || #w00w00
TomNomNom @tomnomnom.com Computer booper and food enthusiast. He/him.
Jason Haddix @jhaddix.bsky.social CEO, CISO, Trainer, Hacker, and Speaker.
AI + hacking + sec leadership.
ex:BuddoBot-Ubisoft-Bugcrowd-Fortify-HP-Redspin-Citrix.
erbbysam @erbbysam.bsky.social Software security, cryptography etc
shubs @shubs.io Co-founder, security researcher. Building an attack surface management platform, @assetnote.io
Allan @allanfriedman.bsky.social SBOM Champion. Paranoid about supply chains of all kinds. Former full-service technocrat at CISA, NTIA. Lapsed{engineer, academic, author}. Now wandering the world doing acts of infosec-goodness, & occasionally getting paid for it. Poster of food pics.- A amitelazari.bsky.social @amitelazari.bsky.social
Paul Tagliamonte @pault.ag he/him ⁂ purveyor of fine bike sheds ⁂ Debian Developer ⁂ Hy ⁂ playing with SDRs as K3XEC ⁂ formerly: board @ OSI
Find me on the fediverse at https://soylent.green/@paul
@prstoddart.bsky.social @prstoddart.bsky.social 
Alex Stamos @stamos.org CPO/CSO of Corridor.dev, teaching at Stanford.
François Diaz-Maurin @francoisdm.bsky.social Nuclear editor @thebulletin.org. Fmr MacArthur Found. & Marie S.-Curie fellow @stanfordcisac.bsky.social. Fmr engineer in US/French nuclear ind. 1st gen. Father x3. Cello. Synthbass. Kyokushin. Autism. | Tips: francois@thebulletin.org Signal: francoisdm.21
Ali Partovi @alip.bsky.social - R @riskybusiness.bsky.social @riskybusiness.bsky.social
Jerry Gamblin @jgamblin.bsky.social Bringing clarity to vulnerability intelligence through open-source tools. Founder of RogoLabs | Creator of http://cve.icu & http://patchthis.app.
Adriana Porter Felt @apf.bsky.social I like writing silly skeets, but that doesn't pay so I also make Google Chrome. mamá, Eng Director, volunteer at Second Harvest. 🇺🇲🇨🇷
Twitter: @__apf__
Serge Egelman @v0max.bsky.social Scientist. Dir. of Usable Security & Privacy at the International Computer Science Institute (icsi.berkeley.edu). Founder, AppCensus (appcensus.io). All opinions are those of his employer(s), and not his own.
https://www.guanotronic.com/~serge/
ᴅᴀɴɪᴇʟ ᴍɪᴇꜱꜱʟᴇʀ @danielmiessler.bsky.social AI / Security Researcher and Entrepreneur.
Founder/CEO of Unsupervised Learning.
Building AI that upgrades humans.
Max Smeets @maxwsmeets.bsky.social Author of No Shortcuts & Ransom War
Co-director Virtual Routes (https://virtual-routes.org/), previously ECCRI
Managing Editor Binding Hook (https://bindinghook.com)
Senior Researcher, ETH Zurich
Abhi Nemani @abhinemani.bsky.social Government technology entrepreneur, bureaucrat & advisor.
Ben Adida @benadida.com I lead an incredible team building voting machines everyone can trust. https://voting.works
Optimistic about judicious uses of tech. Systems, security, privacy, cryptography, and the web are my jam.
Previously: Clever, Square, Mozilla, Harvard, MIT.- J @jhalderm.bsky.social @jhalderm.bsky.social
Terry Zhang @terryzh.bsky.social 
Feross @feross.bsky.social 🧙♂️ Mad scientist • ✨ Founder + CEO @Socket.dev (http://socket.dev) •🌲 Stanford lecturer (http://cs253.stanford.edu) • ❤️ Open source at WebTorrent + StandardJS
Maurice Turner @mauriceturner.bsky.social I translate tech & policy for a living, I travel & make photographs for fun
Joseph Lorenzo Hall, PhD @josephhall.org Astrophysicist turned advocate; guiding the globe to a safer, stronger Internet. Distinguished Technologist @internetsociety.org, https://josephhall.org/, (former CDT, NYU, Princeton CITP, Berkekey iSchool/Astro)
Jeff Moss @thedarktangent.bsky.social thedarktangent@defcon.social
Tarah Wheeler @tarah.org CSO of TPO.group ♦️ EFF Board of Directors♦️she/her ♦️ bestselling author but only that one time
Stanford Tech Impact and Policy Center @techimpactpolicy.bsky.social Transforming research into real-world impact to advance human agency and well-being in the era of social media and AI.
🔗 TIP Center: tip.fsi.stanford.edu
🔗 Trust & Safety Research Conference: bit.ly/TSRConf
Marcia Hofmann @marciahofmann.com Digital rights lawyer and writer. Former Twitter, Electronic Frontier Foundation, Electronic Privacy Information Center, US-UK Fulbright.
yan @yan.bsky.social security at brave software / @bcrypt on twitter
Eric Geller @ericgeller.bsky.social You're probably looking for @ericjgeller.com!
Greg Otto @gregotto.bsky.social @gregotto from twitter, now on bluesky. Editor-in-Chief at CyberScoop. Host of Safe Mode. Better with words than I am with code.
Alex Chapman @ajxchapman.bsky.social Full Time #BugBounty Vulnerability Researcher
https://blog.ajxchapman.com
Arvind Narayanan @randomwalker.bsky.social Princeton computer science prof. I write about the societal impact of AI, tech ethics, & social media platforms. https://www.cs.princeton.edu/~arvindn/
BOOK: AI Snake Oil. https://www.aisnakeoil.com/
Matteo @ hacking and cracking @geminiimatt.bsky.social Hacker. Founder of , @cryptoharlem.bsky.social, counter-surveillance, safety, and security expert. Pushing back against inequality in all it's forms. Anti surveillance, trainer to all marginalized & oppressed people everywhere. (He/They)
Leigh Honeywell @hypatia.bsky.social Security, diversity, housing, Canadian stuff 🇨🇦. Cofounder and CEO of @tallpoppy.bsky.social; more at leighhoneywell.com
Sam Derheimer @samderheimer.bsky.social Election tech and policy geek whose research has been cited by SCOTUS. Opinions shared are my own. 
Lea Kissner @leak.bsky.social Security, privacy, respect. Was the Twitter CISO until it was terrible. Now LinkedIn CISO. they/them
Jon Callas @joncallas.bsky.social Boffin, flâneur, ailouroboskos. Kubrick homage self-portraitist. Also cryptography, human rights, and stuff. Founded PGP, Blackphone, others; worked for DEC, Apple, SRI, ACLU, EFF, others. Was ShmooCon program chair for all twenty conferences.
Wendy Seltzer @wseltzer.bsky.social Lawyer, techie, governance wonk. Also @wseltzer@infosec.exchange
kate conger @kateconger.com tech reporter for the NYT!
co-author of CHARACTER LIMIT!
signal: kateconger.11
buy our book: https://www.penguinrandomhouse.com/books/737290/character-limit-by-kate-conger-and-ryan-mac/
tour dates & translations: https://linktr.ee/kateconger
Alex Abdo @alexabdo.bsky.social Litigation Director, Knight First Amendment Institute at Columbia University (he/him)
Marietje Schaake @marietjeschaake.bsky.social Proud European 🇪🇺 Fellow at Stanford 👩🏼💻 column in FT 🗞️Member of European Parliament 2009-2019 📕Author: The Tech Coup- N @noahpraetz.bsky.social @noahpraetz.bsky.social
hakluke @hakluke.com Dad, hacker, solo founder of haksec.com and hackercontent.com.
Bob Lord @boblord.bsky.social Cautiously pessimistic, esp. about cyber things.
The owls are not what they seem. 🗻🗻🦉🌲🪵 🍒🥧☕️🍩 🕵🏼♀️ 👍🏻
Also: 🔐🔑🔒
And of course: hacklore.org
Other account: @hacklore.bsky.social
Michael A. Specter 👻 @mikespecter.com | Assistant Professor, CS @ Georgia Tech |
| Research Scientist @ Google |
| Prev: PhD in EECS from MIT |
| spdr.cc.gatech.edu |
| mikespecter.com |
@halvarflake.bsky.social @halvarflake.bsky.social 
@arkadiyt.bsky.social @arkadiyt.bsky.social 
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.
Nate Persily @persily.bsky.social James B. McClatchy Professor of Law, Stanford Law School
Mick Baccio @nohackme.thruntcon.com Purveyor of Fine Experiences.
Keyboard Cowboy meets Keyboard Cat.
Shitpost Veteran.
President & Chairman, THRUNT®️ Corp.
JTAG @thejoshpit.bsky.social 
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
Martin Shelton @mshelton.bsky.social Security therapist. Deputy director of digital security @freedom.press.
Mastodon: https://mastodon.social/@mshelton
Digisec newsletter: https://freedom.press/newsletters
Shelby Grossman @shelbygrossman.bsky.social Professor of Practice at the Howard Center for Investigative Journalism at the Walter Cronkite School of Journalism and Mass Communication at Arizona State University
The Citizen Lab @citizenlab.ca We are an academic research unit at the University of Toronto investigating novel threats to democracy, human rights, and global security in the digital ecosystem.
Nathaniel Gleicher @ngleicher.bsky.social Global head of security policy and counter-fraud at Meta. Countering adversarial threats. Previously Illumio, NSC, DOJ. He/him. Dreaming of fall in the green mountain state.
Jennifer Pahlka @pahlkadot.bsky.social Author: Recoding America, Founder: Code for America, Co-founder: USDS and USDR.
VictorianMagnet @victorianmagnet.bsky.social Just a 24 year old late diagnosed autistic person trying to cope with late stage capitalism and the rise of fascism. 🔞MDNI🔞
Kurt Opsahl @kurtopsahl.bsky.social Counsel at RCJ Law, former Deputy ED and GC of EFF, now EFF Special Counsel, president SRLDF, board emeritus USENIX, advisor Open Archive, former Technical Advisory Council CISA. Skeets are my own.
Center for Democracy & Technology @cdt.org The Center for Democracy & Technology. Shaping technology policy and architecture, with a focus on equity and justice. @cdteu.org for our EU-based team.
https://cdt.org
Kendra Albert @kendraserra.bsky.social They/them. Public interest tech and media lawyer at albertsellars.law, recovering academic. 💜 Philly, video games, and plants.
More at kendraalbert.com.
Corben Leo @hacking.bsky.social I hack stuff (legally). | co-founder boring.co
Twitter: https://twitter.com/hacker_
electionline @electionline.bsky.social A project of the Election Center, electionline is the nation's only nonpartisan, non-advocacy clearing house for election administration news and information.
Tim Starks @timstarks.bsky.social Senior reporter, CyberScoop, covering spyware, cyber policy and more. Russia-sanctioned. Former Washington Post, POLITICO, CQ Roll Call. @timstarks.02 on Signal. tim.starks@cyberscoop.com. Mastodon timstarks@infosec.exchange, X timstarks, Threads tstarks2.
Micah Lee @micahflee.com Doing what I can to keep activists, journalists, and researchers safe and productive — writing at https://micahflee.com — author of HACKS, LEAKS, AND REVELATIONS https://hacksandleaks.com — signal: micah.01
Yoel Roth @yoyoel.com Internet sanitation enthusiast and full-time corgi wrangler.
Camille Stewart Gloster @camillestewartgloster.com Strategist shaping the future of cybersecurity, emerging tech & democracy—where policy, power & people intersect.
Founder @ CAS Strategies|Writes @ Command Line w/ Camille |💕💚 #ShareTheMicInCyber
Frmr:WH (#46), Google, DHS (#44)|Views=mine, opinions=strong
Justin Gardner @darthmalware.bsky.social Husband, Father, IT Admin, Failed writer, Pansexual goblin, Corvid fan, Packers, Braves, Star Wars, etc. Level 37
He/Him/his
Andy Sayler @andysayler.bsky.social Information Security, Public Policy, and Food Stuff. InfoSec @Workday, ex-InfoSec @twitter. (he/him)
JoshCorman @joshcorman.bsky.social Philosopher-Strategist-Protector… more later 
Bryson Bort 🦄🌴 @brysonbort.bsky.social 🦄- P Phil Venables @philvenables.bsky.social
Robert McMillan @bobmcmillan.bsky.social Cybersecurity reporter for the Wall Street Journal