Meredith Whittaker @meredithmeredith.bsky.social President of Signal, Chief Advisor to AI Now Institute 
Azzecca @azzecca.bsky.social Chicago based dance music artist ❤️
jiska @naehrdine.bsky.social ɿɘɘniϱnɘ ɘƨɿɘvɘɿ
🎦 youtube.com/@jiskac
📝 naehrdine.blogspot.com
🐥 twitter.com/naehrdine
🎓 hpi.de/classen
📱 reversing.training
Rose 🌹 @rose.bsky.team COO of Bluesky 🦋 - hiring https://bsky.social/about/join!
Matthew Green @matthewdgreen.bsky.social I teach cryptography at Johns Hopkins. https://blog.cryptographyengineering.com
Burton Lopan @burtonlopan.bsky.social I read books. I sip whiskey. I read the news. I chug whiskey. Also, I work: In cybersecurity, focused on keeping bad people out of aging critical infrastructure that provides our modern existence. This probably isn't my real name. Or photo.
HD Moore @hdm.io runZero & Metasploit
Dominic White @singe.bsky.social Hacker at Orange Cyberdefense's SensePost Team
https://hello.singe.za.net/
Martin Henze @henze.bsky.social Securing industrial networks, one bit at a time. Assistant professor at RWTH Aachen University and research group leader at Fraunhofer FKIE.
Ciaran Martin @ciaranm.bsky.social Cyber War. Huh. What is it good for?
👻 @0x0.sigint.team Security. People matter most. Get off X, fool.
Alethe @alethe.bsky.social ‘Uh-Lee-th’ | Bishop Fox 🦊 Red Team | DEF CON Goon & Black Badge Hall of Fame | DEF CON Social Engineering CTF Winner 2019 | Physical Pentester | IVR Pentester | IR Tabletop King 👑
Safa 🇿🇦 in NorCal 🇺🇸 - Fish 🐠 Nerd - Jeep Girl
Danny Palmer @dannypalmer.bsky.social Freelance cybersecurity journalist & writer. Welsh. SE London.
Also likely to post about games, rugby, F1, wrestling & the cat.
I have a Simpsons reference for every occasion.
Space @redditspaceviewes.bsky.social Welcome,this account is devoted high-quality image of space,sharing quality astrophotography science &Technology
Nicole Perlroth @nicoleperlroth.bsky.social cyber raconteur | author THIS IS HOW THEY TELL ME THE WORLD ENDS | former @nytimes | now betting on heroes @ Silver Buckshot Ventures + Venture Partner at Ballistic Ventures.
Bizzotech @buzzotech.bsky.social Artificial Intelligence Applications Architect, OT & ICS Security, gamer, swimmer, former cave diver instructor... BTW my tweets are my own.
Tyler @processimpact.substack.com Industrial pentester | SANS author & instructor
GrandMaster @grandma5ter.bsky.social Cyberzzz in ICS/OT in Transport 🚦🚈🚊 Power 💡🔌 Water 🚰🚱 Renewable 💨☀ explorer and wanderer 🧳🌍 Sport enthusiast🏸🏎️🏐🏊♂️ Sometimes do blog as well
Stephan Beirer @beirer.bsky.social I do ICS/OT security and stuff with critical infrastructure. Editor ISO/IEC 27019, BEER-ISAC #022, physicist by education and by heart | CEO & Team Lead ICS/OT Security @ GAI NetConsult | Berlin/DE. This is a private account.
Gentry Lane @gentrylane.bsky.social Defense tech CEO & cyberpower strategist. NATO S&T panel member. More nerdy, less snarky irl. Occasional pug pix.
Following my long family tradition of fleeing the country when secret police & camps start popping up, I now live somewhere in Europe
ICS Advisory Project @advisoryics.bsky.social The ICS Advisory Project is an open-source project that provides Critical Infrastructure Security Agency (CISA) ICS Advisory data in CSV format and supports multiple interactive dashboards for OT/ICS Asset Owners' vulnerability management.
Dieter Sarrazyn @dietersar.bsky.social ICS, OT security enthousiast, #BeerIsac 
Raphaela Mettig @rmettig.com Researcher and PhD student. Personal account.
rmettig.com/about
Joseph Januszewski, III @jjanuszewski3.bsky.social Security, Control Systems, Protocols, Networks, Servers, Clients, AI, Energy, etc. Miss Radio Shack, BYTE and Midnight Engineering. 
ICS GmbH - Think Safe Think ICS @ics-gmbh.bsky.social IT/OT, CyberSecurity. CyberDefense, InfoSec, Safety, Pentest, IT-Security, KRITIS, ISO27001, IEC62443, DSGVO, SECIRA©, TISAX®
High Dependability Engineering für Software und Systeme, Industrial Engineering, Mobility, Railway
Secure ICS OT @secure-ics-ot.bsky.social Unsolicited posts from an ICS/OT Professional with both GICSP and ISA 62443 Expert. GIAC Advisory and ISA member.
X: @Secure_ICS_OT
Mastodon: https://infosec.exchange/@Secure_ICS_OT
#ICS #OT #GICSP #IEC62443
𝙽𝙴𝚃𝚁𝙴𝚂𝙴𝙲 @netresec.com Experts in Network Forensics and Network Security Monitoring. Creators of #NetworkMiner, #PolarProxy, #FlowCarp, #CapLoader and RawCap.
Website: https://www.netresec.com/
Mastodon: @netresec@infosec.exchange
Mɪᴄʜᴀᴇʟ Tᴏᴇᴄᴋᴇʀ @mtoecker.bsky.social Electric Power Geek, Hardhat Hacker, Control System Security Engineer, & .... Opinions are my own. (ಠ_ಠ) c[_] KC3GST
Ron Fabela @ronfab.bsky.social Goat herder
Lost theoretical astrophysicist (someday)
Cat Wrangler 
Emma @emmamstewart.bsky.social Sometimes I do cool stuff to make electricity resilient. Most of the time I talk about puppies and bikes and shoes. Maybe also surviving cancer. The chiefiest of the scientists. Personal account.
Ironman x 2, half IM x 15+, unretired endurance athlete
Ben Goerz @bengoerz.bsky.social InfoSec Janitor. #fsd
kateo @vajkat.bsky.social 
Aerospace Village @aerospacevillage.bsky.social Twitter feed for the Aerospace Village. Securing the skies and beyond 🚀✈️🛰
Website: www.aerospacevillage.org
Press inquiries: press@aerospacevillage.org
Michael Rodriguez @duckie042.bsky.social Manager @Mandiant @Google Public Sector, Mission Control @ Google Space, Defcon Goon, #ThruntCon Board Member
Dave (@6502_ftw from Tweets) @cursed.monster Computer necromancer/vivisectionist, spoiler of grain, electromagnetic wave wrangler. Has strong opinions, weakly held. Pronouns (he/him) in bio, always antifascist.
JoshCorman @joshcorman.bsky.social Philosopher-Strategist-Protector… more later 
suburbsec @suburbsec.bsky.social A dangerously mediocre man. Security person on the internet.
Cynthia Brumfield @metacurity.com DC resident and cybersecurity writer, analyst, book author, publisher. https://metacurity.com/ https://cyberriskbook.com/
https://www.csoonline.com/profile/cynthia-brumfield/ https://infosec.exchange/@metacurity
Send tips to Cynthia.507 via Signal.
Bryson Bort 🦄🌴 @brysonbort.bsky.social 🦄
Sergio Caltagirone @intel.bsky.social Georgia Tech Professor. Cyber threat intelligence and cybersecurity professional - former NSA, Microsoft, and Dragos. President of the Threat Intelligence Academy. #FSD 🦆 Formerly @cnoanalysis on Twitter
Patrick C Miller @patrickcmiller.bsky.social Critical Infrastructure & Industrial Security Advisor. Ampyx Cyber CEO. Public speaker. Airport dweller. Recovering regulator. BEERISAC member. CCI US Coordinator. Former SANS Instructor.
#ICS #OT #NERCCIP #NIST #IEC62443 #NIS2 #CRA #SlavaUkraini
MITRE ATT&CK @attack.mitre.org MITRE ATT&CK® - A knowledge base for describing the behavior of adversaries. Replying/Following/Reposting ≠ endorsement.
DavBatz @davbatz.bsky.social 🦋 #Energy / #Security / #Technology / #Privacy / Voting rights / #Democracy / #Humor ;RT/Fav ≠ endorsement ≠Rep employer, YMMV, Never start a land war in Asia. him/he BLM
Each day I post about amazing people who have been leaders in arts, science, etc.
Vern McCandlish @malanalysis.bsky.social A #DFIR, #infosec, #dadjokes, #scifi, #books, #rpg, #ttx, #malware, elder #genx, and #gaming nerd. AKA an elder geek. Retired #leo. Retired from #infosec in #OT now too.
Kindness first is useful but telling off toxic folks is on my response spectrum too.
Sean Lyngaas @snlyngaas.bsky.social Cybersecurity reporter, CNN. Signal +1-202-355-8471 or SNLyng.11. sean[dot]lyngaas@cnn[dot]com|slyngaas@proton[dot]me
Horkos @wylienewmark.bsky.social waking up everyday in a full sprint. cyber(punk) & counterintelligence. bloody inertia interspersed with bouts of bloody frenzy. i see kanly today in everything.
#FUZZYSNUGGLYDUCK
opinions are my own.
Beau Woods @beauwoods.com hack all the cybers
Hexadecim8 @hexadecim8.com Author | spooky trans athlete | Linux behavioral threat researcher | never hacked nobody
https://hexadecim8.com
Joe Slowik @pylos.co Threat Intel / CTI / OT / ICS / Critical Infra stuff along with other things. I genuinely care, and wish others did too.
Website: pylos.co
Training/Consulting: paralus.co
Jake Williams @malwarejake.bsky.social Breaker of software, responder of incidents, IANS Faculty, VP R&D Hunter Strategy.
John Hultquist @hultquist.bsky.social Mandiant Intelligence at Google. CYBERWARCON and SLEUTHCON founder. Johns Hopkins professor. Army vet.
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
Thomas Rid @ridt.bsky.social @ridt on X
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
Chris Krebs @thekrebscycle.bsky.social Aka @c_c_krebs over there 
Chris Sistrunk @chrissistrunk.bsky.social Husband, Dad, ⚡EE⚡, OT Security,
OT Practice Leader @Mandiant.com,
Ex-Entergy 💡, BEER-ISAC #002, LaTech Alum
#BBQ, Bourbon, Mississippi Sippers 🥃🦟, weirdo, klugemeister, #sockstatus, #dadjokes #DJaaS #NAPCON Keynote
📍 Mississippi, y'all
Rob Rothwell @rothwell.bsky.social ICS/OT security nerd in Scotland. Breaking computers in new ways since the age of 7. Often grumpy about the state of the world.
John Scott-Railton @jsrailton.bsky.social Chasing digital badness. Senior Researcher at Citizen Lab, but words here are mine.
Nick Drage @sonofsuntzu.bsky.social Co-author of Random The Book: https://randomthebook.com/2026/05/29/its-here/
I'm abstractly interested in many things: https://blog.sonofsuntzu.org.uk/about
Nyctophile.
Ric @ricderby.com Principal security researcher - Orange Cyberdefense
Honorary researcher - @imperialcollegeldn.bsky.social
OT, CNI, novel attack techniques, quantitative risk
motorcycle & guitar obsessive | cat hoarder
Joe Gardiner @thecyberjoe.bsky.social Lecturer in Cyber Sec of CPS (ICS,OT, IoT) at the University of Bristol. Director and Instructor at @hacktonics.bsky.social
Stephen Hilt @sjhilt.hilt.zip Threat Researcher @ TrendAI (Trend Micro), waffle maker, and dad. My statements and opinions are my own and do not reflect my company.
Star Trek Minus Context @nocontexttrek1.bsky.social Double dumb-ass on you. (And so fourth)
#AltText enthusiast. Also on mastodon, formerly on twitter. Other similar accounts are not me.
Rabble @rabble.nz Hacker, anarchist, troublemaker.
Currently: @divine.video
Previously indymedia.org, odeo, twttr, center for civic media, affinity.works, etc….
Personal site: https://Evan.Henshaw-Plath.com
(they/them)
IPFS @ipfs.tech Building blocks for a better web. Open protocols to store, verify, and share data across distributed networks 💎.
https://ipfs.tech
Boris @bmann.ca Web tinkerer. Pooling capital and collaboration.
What if we made things a little bit better?
the grugq @thegrugq.bsky.social 
Steve Weis @handle.invalid Security Engineer interested in cryptography, information security, & privacy engineering.
David Buchanan @retr0.id reverse engineering, cryptography, exploits, hardware, file formats, and generally giving computers a hard time
Fedi: @retr0id@retr0.id
Macroblog: https://www.da.vidbuchanan.co.uk/blog/
Christopher Soghoian @christopher.soghoian.net Work: Senior Advisor for Privacy and Cybersecurity, Office of Senator Ron Wyden.
Matt Blaze @mattblaze.org Scientist, safecracker, etc. McDevitt Professor of Computer Science and Law at Georgetown. So-called expert on election security and a few other things. Slow photographer. RF nerd. Occasionally blogs at https://mattblaze.org/blog
Kenn White @kennwhite.bsky.social cryptography • neuro • cloud • biscuits
ORD-DCA-NYC-BCN ✈️
kennwhite@mastodon.social
Kevin Jones @vcsjones.dev Alexandria, VA.
He / they
Product Security and Cryptography at GitHub / Microsoft. .NET maintainer. Not speaking for my employer.
https://vcsjones.dev ⚫️ https://gh.io/vcsjones
Ange @angealbertini.bsky.social Reverse engineer, file formats expert.
Corkami, CPS2Shock, PoC||GTFO, Sha1tered, Magika...
Security engineer @ Google. He/him.
Brendan Dolan-Gavitt @moyix.net AI researcher at XBOW. Security, RE, ML. PGP http://keybase.io/moyix/
Adam Caudill @adamcaudill.com Security Engineer, Researcher, & Developer. Formerly at 1Password, BSI / AppSec Consulting, Numorian, etc. https://adamcaudill.com
Ian Miers @secparam.bsky.social UMD CS Prof. Security and applied cryptography. 
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
Ian Coldwater 🧊🚫 @lookitup.baby Kubernetes SIG Security Co-Chair, container escaper, goose in the mainframe. Minneapolis. They/them. Stay punk 🏴
MSP feed info: https://bsky.app/profile/amityf.bsky.social/post/3mrv36uo4pc2a
Jen Gentleman @jenmsft.bsky.social I work on the Windows engineering team at Microsoft and help with feedback for Start menu, Settings, taskbar, input + more
You can find me on most of the other social media apps including Twitter and reddit with the same account name @jenmsft
Filippo Valsorda @filippo.abyssdomain.expert RC F'13, F2'17
Cryptogopher / Go cryptography maintainer
Professional open source maintainer
https://filippo.io / https://github.com/FiloSottile
https://mkcert.dev / https://age-encryption.org
https://sunlight.dev / https://filippo.io/newsletter
Whitney Merrill @wbm312.bsky.social I nudge people to care about privacy and security. CPO/DPO. Privacy/infosec lawyer. Hacker. Fighting for privacy, digital civil liberties & the users. Ex @EA @FTC |my views are my own. I used to post on Twitter at @wbm312.
bat 🦇🌻 @mzbat.bsky.social Security Consultant & Founder, Sonar Security | Red Siege, VMware Tanzu, NASA GSFC, Apple, 18F | art, lego, board games, comics, cute animals |🧛🏻♀️⛵️
Bloomberg News @bloomberg.com The first word in business news.
Newsletters: http://bloom.bg/newsletters
Podcasts: http://bloom.bg/podcasts
The Big Take podcast: http://trib.al/jtoXfuT
Jason Schreier @jasonschreier.bsky.social Reporter at Bloomberg | co-host of Triple Click | New York Times bestselling author of Play Nice + Press Reset + Blood, Sweat, and Pixels | Email: jschreier@gmail.com | Signal: jschreier.10
Yoel Roth @yoyoel.com Internet sanitation enthusiast and full-time corgi wrangler.
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
Marcus Hutchins @malwaretech.com threads.com/@malwaretech
https://linkedin.com/in/malwaretech
https://marcushutchins.com
Frank X. Shaw @fxshaw.com hobby bread baker, cyclist, snowboarder, runner, speculative fiction fan (send book recommendations!). Also: lead communications at Microsoft, USMC veteran, Oregon Duck fan. Personal stuff at https:/www.fxshaw.com
Rob Joyce @rgblights.bsky.social Cyber guy. Former NSA cybersecurity director and chief of TAO. Lover of memes. Warning - occasional outrageous Christmas light content.
Patrick Gray @patrick.risky.biz https://risky.biz/
D̒͂̕ᵈăᵃn̕ᶰ Ť̾̾̓͐͒͠ᵗe͗̑́̋̂́͡ᵉn̅ᶰtᵗl̀̓͘ᶫe̓̒̂̚ᵉrʳ @viss.hax.lol Viss from twitter and mastodon.social.
startup founder, hotsauce guy, public speaker
eater of pineapple on pizza, listener of ska, flooper of quads
internet grandpa, former sysadmin turned infosec
https://phobos.io/rtg/
https://ravenholmspices.etsy.com
Bellingcat @bellingcat.com Bellingcat is a global collective uncovering facts to hold power to account. Our work is independent. Our methods are public. Our community is global.
Want to support our charity? bellingcat.com/donate
Dmitri Alperovitch @dmitri.silverado.org Geopolitics, Russia, China, Cyber
Chairman @silverado.org
Author of WorldOnTheBrink.com
Host GeopoliticsDecanted.com podcast
Founder Alperovitch Institute for Cybersecurity Studies at Johns Hopkins SAIS
Co-Founder CrowdStrike
@DAlperovitch elsewhere
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. 🏳️🌈
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.
DilDog 🅅 @dildog.l0pht.com Tech Dysangelist
cDc/hack.xxx/Veilid
Support Veilid! Badge: 🅅 www.veilid.com
Merch at: @hack.xxx
he/him/"hey buddy"
Molly White @molly.wiki writes citationneeded.news • runs @web3isgoinggreat.com and @influence.citationneeded.news • tech researcher and cryptocurrency industry critic • software engineer • wikipedian
support my work: citationneeded.news/signup
links: mollywhite.net/linktree
💗💜💙
TracketPacer @tracketpacer.com 🚀rockit network engineer
👩🏼💻ethernet fangirl
🛜 weird use cases & silly tech!
💌 tracket@tracketpacer.com
🌎 tracketpacer.com
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