Ryan Naraine @ryanaraine.bsky.social Three Buddy Problem
https://securityconversations.com
Katie Moussouris (she/her/she-hulk/she-ra)🌻 @k8em0.bsky.social Founder & CEO LutaSecurity @payequitynow MIT&Harvard visiting scholar, @MasonNatSec fellow, 1/2 Chamoru, 1/2 Greek all-American hacker
Xeno Kovah @xenokovah.bsky.social Interested in reverse engineering, firmware, bluetooth, trusted computing, and training. Founder of OpenSecurityTraining2 https://ost2.fyi
LaurieWired @lauriewired.bsky.social researcher @google; serial complexity unpacker
ex @ msft & aerospace
µASC Conference @uasc.cc Official account of the Microarchitecture Security Conference (µASC).
Cutting-edge research on #security in #microarchitecture contexts.
Next Conference: February 3, 2026, in Leuven, Belgium. https://uasc.cc
David Pakman @davidpakman.bsky.social http://davidpakman.komi.io/
Vasilios Mavroudis @mavroudisv.bsky.social Principal Research Scientist, Alan Turing Institute
Autonomous Cyberdefence 🤖 and AI cyber risks ⚡
https://mavroud.is
Natalie Silvanovich @natashenka.bsky.social Google Project Zero
Advanced Fuzzing League @aflplusplus.bsky.social We want to make fuzzing better and better
Follow for updates on AFL++ & LibAFL
@ecaml.bsky.social @ecaml.bsky.social 
Fabio Pagani @pagabuc.bsky.social 
degrigis @degrigis.bsky.social Computer Security PhD student@UCSB Seclab | Binary tamer | hacking@shellphish
@earlence.bsky.social @earlence.bsky.social (Assistant) Professor at @UCSanDiego. I hacked a Stop sign once, and it is now in a museum. Also hacked a bicycle. I mostly spend my time building stuff though.
Redact.dev @redact.dev Redact is free software that lets you mass delete your posts, tweets, messages & more from 30+ sites. Download now and start taking control of your privacy!
aurelsec @aurelsec.bsky.social Hackademic at S3@eurecom
Ali Abbasi @alixabbasi.bsky.social Faculty at @CISPA. Research on embedded systems security. Mastodon: AliAbbasi@infosec.exchange
Alex Gantman @againsthimself.bsky.social 
Daniel Arp @darpsky.bsky.social Assistant Professor at TU Wien
Machine Learning & Security
stacksmashing @stacksmashing.bsky.social Security researcher with a focus on hardware & firmware. I occasionally publish stuff on YouTube. Co-founder of
hextree.io. Contact: contact@stacksmashing.net
LiveOverflow 🔴 @liveoverflow.bsky.social wannabe hacker... he/him
🌱 grow your hacking skills https://hextree.io
hextree.io @hextreeio.bsky.social 🌱 Grow your cybersecurity skills with concise and well-edited courses - in early access now! Created by @LiveOverflow and @stacksmashing.
https://hextree.io/
Steven Levy @stevenlevy.bsky.social Still writing. Editor at Large WIRED. Hackers, Crypto, Facebook: The Inside Story, Insanely Great and other books. Signal: stevenlevy.72
Claudio Agosti @vecna.bsky.social technology won't save us, but still is the best I've to offer
Rob Joyce @rgblights.bsky.social Cyber guy. Former NSA cybersecurity director and chief of TAO. Lover of memes. Warning - occasional outrageous Christmas light content.
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.
Marcus Hutchins @malwaretech.com threads.com/@malwaretech
https://linkedin.com/in/malwaretech
https://marcushutchins.com
Jake Williams @malwarejake.bsky.social Breaker of software, responder of incidents, IANS Faculty, VP R&D Hunter Strategy.
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.
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.
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
Catalin Cimpanu @campuscodi.risky.biz ☆ Cybersecurity reporter
★ Newsletters at Risky Business
#infosec #cybersecurity
https://risky.biz
404 Media @404media.co it's a website (and a podcast, and a newsletter) about humans and technology, made by four journalists you might already know. like and subscribe: 404media.co
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
Marina Krotofil @marmusha.bsky.social 
Jeff Jarmoc @jjarmoc.bsky.social Yet another security person.
All out of batteries, but still making noise!
Adam Shostack @adamshostack.bsky.social Threat modeling. BH Review Board. Affiliate Professor, UW. Fixed autorun. Helped create CVE.
Not sure why we're building graphs on yet another (effectively) centralized system. https://infosec.exchange/@adamshostack
Anant Shrivastava @anantshri.info Researcher | Trainer | Security Professional | Developer | Admin
Kym Possible @kympossible.bsky.social Job Status: HBIC at @zatik.io
I’ve kissed mermaids, rode the El Niño
Protect Trans People 🏳️⚧️
Nathan Hamiel @nhamiel.bsky.social Senior Director of Research. Black Hat Review Board Member (AI, ML, and DS track lead) and International public speaker. I focus on emerging technologies and risks at the intersection of humanity and tech. Hype Critic. My writing: https://perilous.tech
Smashing Security podcast @smashingsecurity.com Funny award-winning weekly podcast about hacking, cybercrime, and privacy with @grahamcluley.com.
https://www.smashingsecurity.com
👕 Merch https://www.smashingsecurity.com/store
Patreon: https://www.smashingsecurity.com/plus
Rik Ferguson @rikferguson.com Immigrant. VP Security Intelligence @Forescout, Co-founder @RespectInSec. Board @vaultree, Cybersecurity Futurist, Researcher, Award-winning writer/producer. He/Him. Pussy in bio.
Substack - Ferguson.ink
Slava Ukraini 🇺🇦
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.
Frederic Jacobs @fredericjacobs.com www.fredericjacobs.com
https://ger.mx/A-RGsldmQt0iXfnzPgXNzLzA5_jvDbWHabqz1yJrt2ma#did:plc:oxwmqopgbm3driwzues7odpz
DilDog 🅅 @dildog.l0pht.com Tech Dysangelist
cDc/hack.xxx/Veilid
Support Veilid! Badge: 🅅 www.veilid.com
Merch at: @hack.xxx
he/him/"hey buddy"
Deth Veggie @dethveggie.bsky.social Herr Doktor Professor Deth Vegetable -- CULT OF THE DEAD COW -- .ooM
Hacker / Archaeologist / Gadabout / Professional Something-or-Other. Anti-fascist and Pro-science. As the old axiom says, reality has a liberal bias.
Nazis need to be punched.
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
Runa Sandvik @runasand.bsky.social Founder of Granitt, securing journalists and at-risk people around the world. 
Azeria @azeria-labs.com Founder of Azeria Labs, Trainer, Author of Blue Fox: Arm Assembly Internals & Reverse Engineering
Dominic White @singe.bsky.social Hacker at Orange Cyberdefense's SensePost Team
https://hello.singe.za.net/
The Official Pulpit of CULT OF THE DEAD COW @cultdeadcow.com www.cultdeadcow.com
Troy Hunt @troyhunt.com Founder & CEO of @haveibeenpwned.com, the most trusted name in data breach intelligence. Speaker, blogger, Microsoft Regional Director. Gold Coast, Australia.
Dino A. Dai Zovi @ddz.bsky.social I drink amari and I know things. $ddz
LMDDGTFY: https://duckduckgo.com/?q=dino+dai+zovi
NYC/BK
evacide @evacide.bsky.social Director of Cybersecurity @eff.org
Co-founder of @stopstalkerware.bsky.social
These opinions are my own, not my employer's
I did a TED talk once
@mikko @mikko.bsky.social Fighting malicious use of technology.
Łukasz @maldr0id.bsky.social Military-grade reverse engineer @ Google, working on Android malware
Got mistaken for a member of Project Zero once.
Everything here is my own opinion
he/him ✨🌈🦄
the grugq @thegrugq.bsky.social 
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
Alex Ionescu @ionescu.bsky.social Windows Internals Author, Developer, Reverse Engineer, Security Researcher, Speaker, Trainer, and most recently Nation State Hacker.
Core OS Platform Developer at Apple, Hyper-V Vendor at Microsoft, Chief Architect at CrowdStrike and now Director at CSE.
Accidental CISO @accidentalciso.net I accidentally became the CISO. I didn't want this job, but the job chose me. I'm scared, and I want to go home.
https://www.accidentalciso.net
Richard Johnson @richinseattle.bsky.social Fuzzing; Vulnerability Research;
Deep Learning; Reverse Engineering
Training & Publications @ http://fuzzing.io
Hacking the planet since 1995
Undercurrents.io BOFH
I'll stop the world and melt with you
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
JP Aumasson @aumasson.jp https://aumasson.jp
cofounder & CSO @ taurushq.com
cryptographer (BLAKE2, BLAKE3, SipHash)
author of Serious Cryptography https://nostarch.com/serious-cryptography-2nd-edition and other books
Signal: jpa.01
@halvarflake.bsky.social @halvarflake.bsky.social 
Distributed Denial of Secrets @ddosecrets.org DDoSecrets is a 501c3 journalist non-profit devoted to publishing and archiving leaks and other data in the public interest.
DDoSecrets.org
LibraryOfLeaks.org
https://en.wikipedia.org/wiki/Distributed_Denial_of_Secrets
DonorBox.org/ddosecrets
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
Pwnallthethings @pwnallthethings.bsky.social Just thinking out loud.
Pasquale Stirparo 🇺🇦 🇪🇺 @pstirparo.bsky.social Founder @ RationalEdge
#ThreatIntel #ICS #DFIR; ''Learning iOS Forensics'' author;
#BSidesZH #PIVOTcon org.
@pivotcon.bsky.social
https://pstirparo.ch
https://rationaledge.io
Related interests/obsessions:
#ThreatHunting #CTI #YARA #CriticalThinking #Books
Maddie Stone @maddiestone.bsky.social Security Researcher at Google Project Zero. 0-days all day. Love all things reverse engineering. she/her
chompie @chompie.rip hacker, poster, weird machine mechanic
https://chompie.rip
dmnk @dmnk.bsky.social 【ＤΞＣＯＭＰＩＬΞ ＮΣＶΞＲ】
Android Red Team @google
Fuzzing @aflplusplus.bsky.social
CTF @enoflag
(opinions my own)
Meredith Whittaker @meredithmeredith.bsky.social President of Signal, Chief Advisor to AI Now Institute 
Robert Graham @erratarob.bsky.social @erratarob on the hellscape site
Jeff Moss @thedarktangent.bsky.social thedarktangent@defcon.social
Giorgio Bonfiglio @grg.pw Principal Chaos Monkey @ AWS | IPv6/RPKI advocate | former network plumber | opinions my own | he/him
Alex Stamos @stamos.org CPO/CSO of Corridor.dev, teaching at Stanford.
Lenny Zeltser @lennyzeltser.com Builder of security products and programs. Teacher of those who run them.
https://zeltser.com
Kenn White @kennwhite.bsky.social cryptography • neuro • cloud • biscuits
ORD-DCA-NYC-BCN ✈️
kennwhite@mastodon.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
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
@gannimo.bsky.social @gannimo.bsky.social 
Arrigo Triulzi @cynicalsecurity.bsky.social IT Security, cynically aged. Maths. Some nukes. Longing for Symbolics and Connection Machines. Keeper of Ancient Computing Lore. Wassenaar intangible Ⓐ
Andrea Draghetti @andreadraghetti.bsky.social aka Drego.
Head of Threat Intelligence at D3Lab! Phishing Army, tosint and meioc is my projectj!
My passions are #F1 and #Running!
My blog, my CV and my projects ⬇️
https://andreadraghetti.it
Claudio Criscione @criscio.net Security Robot Overlord @ Google.
Vulnerability Management
Brendan Dolan-Gavitt @moyix.net AI researcher at XBOW. Security, RE, ML. PGP http://keybase.io/moyix/
Nicolas Christin @nc2y.bsky.social Prof. at Carnegie Mellon University. Computer security, online crime, and assorted online seediness. Reformed(?) hacker. Economic migrant.
📍 Pittsburgh, PA, mostly
🕸️ https://www.andrew.cmu.edu/user/nicolasc- D @dguido.bsky.social @dguido.bsky.social
Malware Unicorn @malwareunicorn.bsky.social @Straiker. Ex-Microsoft. Ex-Meta RedTeam, Ex-Endgame, Ex Fireeye. malwareunicorn.org
Daniel Cuthbert @dcuthbert.bsky.social Ageing hacker, long time documentary photographer. Black Hat Review board. Now sitting on numerous government cyber security boards so I guess that means I’ve grown up right?
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
Nick Sullivan @nicksullivan.org Asymmetries in action
Costin G. Raiu @craiu.bsky.social Romanian antihacker from another planet. #threatintel #yara #chess #taekwondo black belt
Motto: "One reboot a day keeps the implant away"
Emiliano De Cristofaro @emilianodc.com Professor at UC Riverside, head of SPALab
Home: emilianodc.com
Ange @angealbertini.bsky.social Reverse engineer, file formats expert.
Corkami, CPS2Shock, PoC||GTFO, Sha1tered, Magika...
Security engineer @ Google. He/him.
Kevin Borgolte @kevin.borgolte.me Professor in CS at Ruhr University Bochum, DE. Part of HGI Bochum and DFG Excellence Cluster CASA: Cyber Security in the Age of Large-Scale Adversaries. Software and Internet security & privacy. Mastodon: @kevin@borgolte.me. Sometimes going by cao.
Eric Evenchick @ee.bsky.social Hardware / Embedded Security Human
💼 Co-founder @tetrelsec.com
🏠 Toronto
He / Him 🏳️🌈
Daniele Lepido @danielelepido.bsky.social Italy-based Senior Reporter at Bloomberg. Telecoms, Cybersecurity, Industrials @business. @Sole24Ore alum. Dad of 4. RTs ≠ endorsements. Views mine
Joe FitzPatrick @securelyfitz.bsky.social Trainer and Researcher, SecuringHardware.com