Simon Willison @simonwillison.net Independent AI researcher, creator of datasette.io and llm.datasette.io, building open source tools for data journalism, writing about a lot of stuff at https://simonwillison.net/
Active Measures, LLC @activemeasures.bsky.social Active Measures, LLC is a full service research and writing firm. For details see activemeasuresllc dot com or reach out to walkin [at] activemeasuresllc [dot] com.
Internet Archive @archive.org Internet Archive is a non-profit research library preserving web pages, books, movies & audio for public access. Explore web history via the Wayback Machine. 
Natural History Museum, London @nhm-london.bsky.social We’re the museum looking deeper into the Earth’s past to shape a new future where both people and planet thrive.
Protecting the planet, it’s in our nature. 🌍
Adam J O’Donnell @adamjodonnell.bsky.social Deputy CISO @ Stripe. I like art. cDc ❤️🫵
Thomas Rid @ridt.bsky.social @ridt on X
Joseph Lorenzo Hall, PhD @josephhall.org Astrophysicist turned advocate; guiding the globe to a safer, stronger Internet. Distinguished Technologist @internetsociety.bsky.social, https://josephhall.org/, (former CDT, NYU, Princeton CITP, Berkekey iSchool/Astro)
TrendAI Zero Day Initiative @thezdi.bsky.social TrendAI Zero Day Initiative™ (ZDI) is a program designed to reward security researchers for responsibly disclosing vulnerabilities.
Mike Sager @mikesager.net CISO @ New Harbor
Security, rock and roll, dad jokes. Fan of The National and The Nationals. Former CTO at EMILY’s List.
msager.25 on Signal
Half awake, in a fake empire.
I have friends everywhere.
He/Him
mike@crabstrike.com
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
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.
Matt Burgess (WIRED) @mattburgess1.bsky.social Security writer @wired.com
Cybercrime, privacy, surveillance, and more.
Signal: mattburgess.20 | Email: matt_burgess@wired.com
GreyNoise @greynoise.io GreyNoise analyzes Internet background noise. Use GreyNoise to remove pointless security alerts, find compromised devices, or identify emerging threats.
The Shadowserver Foundation @shadowserver.bsky.social Our mission is to make the Internet more secure by bringing to light vulnerabilities, malicious activity and emerging threats. Join our Alliance!
https://shadowserver.org/partner
Glenn @ntkramer.bsky.social Elder Millennial | 💼 Cybersecurity | I ask 'why?' a lot | Pro Oxford Comma | Fix it! | He/Him | #BLM | Views are my own.
Lily Hay Newman @lhn.bsky.social Security reporter for WIRED Magazine. she/her/my man. Signal +1 (347) 722-1347
Lea Kissner @leak.bsky.social Security, privacy, respect. Was the Twitter CISO until it was terrible. Now LinkedIn CISO. they/them
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.
Hackers On Planet Earth 🏳️🌈🏳️⚧️ @hope.net HOPE Conference
The New Yorker Hotel
August 14-16, 2026
NY, NY
https://hope.net
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
chompie @chompie.rip hacker, poster, weird machine mechanic
https://chompie.rip
Patrick Gray @patrick.risky.biz https://risky.biz/
Ellen Nakashima @ellenwapo.bsky.social Intelligence and national security reporter at The Washington Post. Reach me securely on Signal at Ellen.626.
Azeria @azeria-labs.com Founder of Azeria Labs, Trainer, Author of Blue Fox: Arm Assembly Internals & Reverse Engineering
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
Jim @cyberjim.bsky.social Former president of Computer Bits, current Director of Cybersecurity and Risk Management, Beer-ISAC coin 313, drummer in MyDadsCoverBand.com.
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.
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.
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
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
J @locknload.bsky.social Just another dude.. techno | 5G security | Private5G | SOAR | ICS/OT | RE | MDM/IIoT | NTN | 6G-IA | #trustbutverify #unlocKing #nokia #section31 🖖💜🖤🎶
🕵️♂️📡📶
GrandMaster @grandma5ter.bsky.social Cyberzzz in ICS/OT in Transport 🚦🚈🚊 Power 💡🔌 Water 🚰🚱 Renewable 💨☀ explorer and wanderer 🧳🌍 Sport enthusiast🏸🏎️🏐🏊♂️ Sometimes do blog as well
Archony @antarch.bsky.social Protector of the cyber realm | Purveyor of Curiosities | Techie | IT/OT/ICS cybersecurity | Fast Food Connoisseur
Lord To3t @to3t.bsky.social Hardware, ICS/OT, securing the blinky stuff
Thomas Lilja @tuxic.bsky.social All things Infosec. OT/ICS. Protector of critical infrastructure. Physical security. Locks. Hardware. Need. More. Time.
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
Jason D. Christopher @jdchristopher.bsky.social ICS/OT security. Sustainability. Venture Capital.
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.
Ian Anderson @iananderson.bsky.social Cyber and Physical Security Manager. Technology Monitoring. Instructor @ Arizona State. Baseball fan.
Oklahoma City
Joe FitzPatrick @securelyfitz.bsky.social Trainer and Researcher, SecuringHardware.com
IoT/ICS Security Nerd 🇺🇦 🏳️⚧️ @itsecurityninja.bsky.social Sometime white hat. Stopper of hackers, First of her name, Sword and knife enthusiast. Total nerd, network engineer, cat lady. 100% devoted to my wife. DefCon 26 ICS CTF, HacktheCapitol 2021
DMs may or may not be answered.
Jonathan Good, PE @jonnyogood.bsky.social Power Engineer specializing in SCADA communications to electric distribution equipment.
Matt Shultz @hazmat09.bsky.social Digital security, smoked meats, welding, and running. No_filter. Opinions are my own and not a reflection of any organization I may (or may not) be part of. Likes, re-posts, and follows do not constitute endorsement.
AMPYX CYBER (formerly Ampere Industrial Security) @ampyxcyber.com The premier global industrial security consulting firm. Securing the critical things in your world. We keep you ahead of your adversaries - and your auditors.
Also found at ampyxcyber@mastodon.social
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 
Ka0sKl0wN @ka0skl0wn.bsky.social Christ follower丨Husband丨Father丨 Veteran丨Certified Imposter 丨OT Security Practice Lead @Mandiant / @GoogleCloud丨 Sarcastic AF 丨Ka0tic Good
Sam Van Ryder @samvr.bsky.social ICS/OT cybersecurity - defending critical infrastructure from assholes who seek to disrupt and cause harm. Community builder and HOU.SEC.CON cofounder
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
Joseph Januszewski, III @jjanuszewski3.bsky.social Security, Control Systems, Protocols, Networks, Servers, Clients, AI, Energy, etc. Miss Radio Shack, BYTE and Midnight Engineering. 
trustnverifeye @trustnverifeye.bsky.social 4n6, cycling, and 🎮
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
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
Michael Rodriguez @duckie042.bsky.social Manager @Mandiant @Google Public Sector, Mission Control @ Google Space, Defcon Goon, #ThruntCon Board Member
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.
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
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.
Beau Woods @beauwoods.com hack all the cybers
Chris Krebs @thekrebscycle.bsky.social Aka @c_c_krebs over there 
InfoSecSherpa 🏔️ @infosecsherpa.bsky.social #Librarian turned #InfoSec & #DataPrivacy practitioner. #Philly area hoagie mouth. InfoSecSherpa and Sherpa Intelligence: Your Guide Up a Mountain of Information! Portfolio: https://linktr.ee/infosecsherpa #GoBirds
The Record @therecordmedia.bsky.social Covering the world of cyber and intelligence from every angle.
Michael Farnum @m1a1vet.bsky.social Advisory CISO opining on cybersecurity topics, Co-founder of HOU.SEC.CON (https://bsky.app/profile/hou-sec-con.bsky.social) cybersecurity conference, non-profit and startup board member, and suffering Dallas Cowboys fan.
CYBR.SEC.CON. @cybrseccon.bsky.social Supporting the Cybersecurity community through conferences, media, scholarships, and more
Luca @securescientist.eu Dad, husband, cybercrime prof with a kink for attacker economics. Head of the Threat Analysis group @tue.nl. 🇳🇱 by profession, 🇮🇹 by nature, 🇪🇺 by conviction. Optimistic cynicism is my thing. Love most. 🌏🔗securescientist.eu
Fight for the Future @fightforthefuture.org 👊 Battling techno-fascism with our Internet-savvy blend of attention-grabbing activism and mass mobilization.
https://www.fightforthefuture.org/2026
Benn Jordan @bennjordan.bsky.social Benn Jordan / The Flashbulb
••Recording artist | YouTuber | Researcher••
https://linktr.ee/BennJordan
Chris Benson @thechrisbenson.com Editor-in-chief www.HangoverHeadlines.com. Author, REPORTING FROM DETOX. Chair, Lycoming County Dems. Did: HIV Planning @PAHealthDept. 2012 Obama Delegate. John Cusack, Laura Loomer, Roger Stone & George Santos follow me on X:@TheChrisBenson
Darkart @darkartgraphic.bsky.social 🏴☠️🚩 https://darkartgraphic.itch.io
https://darkart-graphics.myspreadshop.com
Freelance Graphic Designer | Cyber Security Researcher | Programmer | Anonymous | Dark Brotherhood #anon #anonymous #graphicdesign #programmer #coder #multimedia #art
0n1ydan5 @0n1ydan5.com ❤️s Hax, Code, Running. Chaos Monkey. Feminist.
5x Marathon Runner, 2x HM, 2x 10k🏃
BCS / ACM / OWASP / OpenUK member. Personal Acc.
https://linktr.ee/0n1ydan5
Alec Muffett @alecmuffett.bsky.social everybody deserves good security.
https://alecmuffett.com/about
U.S. Senator John Fetterman @fetterman.senate.gov United States Senator fighting for the people of the Commonwealth of Pennsylvania.
www.fetterman.senate.gov
Andrew Couts @couts.bsky.social Security & Investigations Director at @WIRED.com. Send tips and/or dog pics.
Signal: couts.01
Ransomware.live @ransomware.live Ransomware.live tracks & monitors ransomware groups' victims and their activity. It was created by @Julien.io, a security researcher. The website provides information on Ransomware groups, victims, negotiations, payment demands and much more.
Valéry Rieß-Marchive @valerymarchive.bsky.social Rédac' chef de LeMagIT (fr)
Accro #cybersécurité #infosec
Collectionneur de #ransomware
follow: https://linktr.ee/valerymarchive
Milo Rossi @miniminuteman.bsky.social Archaeologist • Environmental Scientist • Googledebunker
2.2M YouTube
2M TikTok
Mark Hamill @markhamillofficial.bsky.social Believe in yourself! Work hard, never give up & anything's possible! OR: Kick back, relax & aim low: You'll never be disappointed...😜
Bad APT Advice @badaptadvice.bsky.social Phone it in
Maxime Lamothe-Brassard @maximelb.bsky.social Founder at LimaCharlie, cyber security, ex-intelligence/Google/crowdstrike.
Whitney Champion 🍪 @whit.zip security architect / co-founder @digitaldefenseinstitute.com / co-founder Recon InfoSec
♥♥♥ == @eric.zip, nerdery, rainbows, sweatpants
she/her | mama of 3 | 🤍🙏🌿🌈🍄
unicorns.lol
https://short-stack.net
whitneychampion.com/portfolio
Christopher Luft @tekgrunt.bsky.social Co-Founder @LimaCharlie.io | Host of The Cybersecurity Defenders Podcast
I am interested in computer science, art & growing my own food. Working to disrupt the way cybersecurity tools and supporting infrastructure are delivered.
Claudia @signorina37.ransomnews.online behavioral #cybersecurity & reputation strategist • social engineer • OSINT/SOCMINT/HUMINT • #cyberculture • security awareness & human risk education • COBOL programmer • #nerd
🔺 co-founder @ransomnews.online
外人
https://signorina37.ch
Lukasz Olejnik @lukaszolejnik.bsky.social Security & Privacy. Data Protection. Research & Development. Engineering. Analyst. Policy. W3C. Consultant. Author. King’s College London/War Studies. me@lukaszolejnik.com
lukaszolejnik.com/books
blog.lukaszolejnik.com
techletters.substack.com
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
Michael Moore @michaelmoore.ai #AI, #Cybersecurity, and other technology topics. Trying to make the world a better place. Personal account; my views only. Work: https://s1.ai/purple at @sentinelone.com
Eric Capuano @eric.zip - Dad of two <3
- Co-founder Recon InfoSec
- SANS DFIR Instructor
- BlackHat Trainer
- IANS Faculty
- Trainer @digitaldefenseinstitute.com
- Blog: https://blog.ecapuano.com
- ⬡ ODESZA, Lane 8, Kasbo 🎧
- ❤ @whit.zip
Dennis Keefe @dkeefe.bsky.social CompTIA Security+ | LPI Linux Essentials | Former Law Enforcement | OSINT Enthusiast | Christ Follower https://www.linkedin.com/in/dkeefe/
Umair Qamar @handle.invalid Defensive Security Consultant
Gerald Auger, PhD @geraldaugerphd.bsky.social Passionate About Cybersecurity | Sharing Passion to Help Individuals Discover, Engage, and Level Up A Cyber Career | Tweets Sharing Cyber Tips, Tools, Love💙 Go to SimplyCyber.io
Nikki Webb @nikkic360.bsky.social Happiest by or in the sea 🖤🌊 Global Channel Manager for MSSP Custodian360, part of The Cyber House Party team, Volunteer at The Cyber Helpline. Total cat lady 🖤🖤🖤🐱🐱🐱
Andrew Case @attrc.bsky.social Volatility Core developer, Dir. of Research Volexity, LSU Cyber
Craig Williams @craigwilliams.bsky.social I build threat intel stuff.
Taz Wake @tazwake.bsky.social DFIR & Threat Hunting Professional | SANS Course Author - FOR577 Linux IR Class | Certified SANS instructor | Incident Responder | I have no access to DMs.
Violet Blue® @violetblue.bsky.social Awarded author, journalist: cybersecurity, privacy, Covid. WIRED, PopSci, Spinoff, Engadget, FT, IFJ. Visiting Scholar at Stout Research Centre, NZ. Black Hat keynote. S/her.
Bio: about.me/violetblue
More: linktr.ee/viblue
News: patreon.com/violetblue
INTERPOL @interpol.int Connecting police & catching criminals in 196 countries for more than a century. 🕵️
Follow our success stories here. 👮♂️🚔👮♀️
✍️ Report crimes to your local police.
Kenn White @kennwhite.bsky.social cryptography • neuro • cloud • biscuits
ORD-DCA-NYC-BCN ✈️
kennwhite@mastodon.social