Steven @0xstoni.bsky.social likes writing malware. https://github.com/tehstoni
OSEP / CRTO / CRTE / CARTP / PNPT / ICCA / eJPT
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
Nick Frichette @frichetten.com Staff Security Researcher @datadoghq | DEF CON/Black Hat USA main stage speaker | he/him | OSCP OSWE | I turned hacking AWS into a career | Tweets are my own | Created https://hackingthe.cloud
Pwnallthethings @pwnallthethings.bsky.social Just thinking out loud.
@six2dez.bsky.social @six2dez.bsky.social 
Marc Smeets @marcoverip.bsky.social Does a thing or two with red teaming @ Outflank | part time race and drift car instructor
DTM @dtmsecurity.bsky.social Hacker, Security Engineer and Researcher.
https://dtm.uk/
mpgn @mpgn.bsky.social Flibustier du net ̿ ̿̿'̿'\̵͇̿̿\=(•̪●)=/̵͇̿̿/'̿̿ ̿ ̿ ̿
Podcast Hack'n Speak http://anchor.fm/hacknspeak
Github https://github.com/mpgn
ϻг_ϻε @steven.srcincite.io Hermetic Initiate. Exploring conscience and the nature of reality. I also hack things.
💥 leonjza @leonjza.bsky.social [ 'cto @sensepost.com', '@orangecyberdef', 'caffeine fueled', '(╯°□°)╯︵ ┻━┻', 'security guy', 'metalhead', 'i saw your password', 'KOOBo+KXleKAv+KXlSnjgaM=' ]
Vincent Yiu @vysecurity.bsky.social Director, Red Team. Helping the world protect themselves from baddies.
Cas van Cooten @casvancooten.com @chvancooten on the bird app 🐦
---
Benevolently malicious offensive security enthusiast || OffSec Developer & Malware Linguist || NimPlant & NimPackt author || @ABNAMRO Red Team
CCob🏴 @ethicalchaos.bsky.social Ceri Coburn: Hacker | R̷u̷n̷n̷e̷r̷ DIYer| Vizsla Fanboy and a Little Welsh Bull apparently 🏴
Author of poorly coded tools: https://github.com/CCob
Karl Fosaaen @kfosaaen.bsky.social VP of Research - @netspi
Co-author of “Penetration Testing Azure for Ethical Hackers” (http://amzn.to/3GOvW3A).
@kfosaaen on most other platforms
Dr Nestori Syynimaa @drazuread.com Principal Identity Security Researcher @Microsoft. Ex-Secureworks (PhD, MSc, MEng, CITP, CCSK).
And yes, opinions are my own ;)
Dirk-jan @dirkjanm.io Hacker at outsidersecurity.nl. Researches Entra ID, AD and occasionally Windows security. I write open source security tools and do blogs/talks to educate others on these topics. Blog: dirkjanm.io
Synacktiv @synacktiv.com Offensive security company. Dojo of many ninjas. Red teaming, reverse engineering, vuln research, dev of security tools and incident response.
Catalin Cimpanu @campuscodi.risky.biz ☆ Cybersecurity reporter
★ Newsletters at Risky Business
#infosec #cybersecurity
https://risky.biz
BleepingComputer [Unofficial] @bleepingcomputer.com.web.brid.gy BleepingComputer is a premier destination for cybersecurity news for over 20 years, delivering breaking stories on the latest hacks, malware threats, and […]
🌉 bridged from 🌐 https://bleepingcomputer.com/: https://fed.brid.gy/web/bleepingcomputer.com
Florian Roth @cyb3rops.bsky.social Placeholder profile : https://x.com/cyb3rops | glad to be in this respectful safe space | vi/vim- T @taviso.bsky.social @taviso.bsky.social
x0rz @x0rz.bsky.social Cybersecurity & Threat Intelligence. Knowledge is power, France is bacon 🥓
Andrea P @decoder-it.bsky.social 
Sysinternals @sysinternals.com Created by Mark Russinovich and Bryce Cogswell and later acquired by Microsoft, Sysinternals utilities help you troubleshoot and manage your Windows systems.
Lars Karlslund 🇩🇰 @lkarlslund.bsky.social Curious security octopus | Adalanche Attack Graph Analyzer / 8.7B hashes http://ntlm.pw / NIFO Defender Removal | Sarcasm level 11 | All thoughts, no leadership | 🇩🇰 🇺🇦
Andy Robbins @andyrobbins.bsky.social aka wald0
BSides London @bsideslondon.bsky.social 📅 13 Dec 2025 | 📍 Novotel London West
Grassroots-driven security conference.
Built by the local InfoSec community, for the community.
Web: https://BSides.London
X/Twitter: https://x.com/BSidesLondon
#BSidesLDN2025
@redteamtactics.bsky.social @redteamtactics.bsky.social Outsmart, Outmaneuver, Redefine the Tactics blog 👉 https://posts.redteamtacticsacademy.com/
learn 👉 https://masterclass.redteamtacticsacademy.com
RastaMouse @rastamouse.me make pic +relax
0xdf @0xdf.bsky.social Principal Training Architect @ HackTheBox
CTF Addict
"Potentially a legit researcher"
he/him
Website: https://0xdf.gitlab.io/
YouTube: https://www.youtube.com/c/0xdf0xdf
Twitter: 0xdf_
Discord: 0xdf
Mastadon: 0xdf@infosec.exchange
Bojan Zdrnja @bojanz.bsky.social IT Security guy, penetration testing is my thing. One of the SANS Internet Storm Center handlers at https://isc.sans.org.
SANS SEC542 instructor and course co-author, SEC565 instructor.
I lead the penetration testing team at INFIGO, https://www.infigo.is
@sh4hin.bsky.social @sh4hin.bsky.social Threat Emulation/Hunting/ DFIR
Mr.Un1k0d3r @mrun1k0d3r.bsky.social Live hacking content https://truecyber.world/
Red team training https://mr.un1k0d3r.world/training/
Github https://github.com/Mr-Un1k0d3r
Alfie Champion @ajpc500.bsky.social Founder @ delivr.to | Threat Detection @ GitHub | Previously MWR
Robin @digi.ninja Hacker, coder, climber, runner, triathlete.
Always learning.
Co-flounder of SteelCon
Cooper @ministraitor.bsky.social Dutch software dev who spends his free time travelling all over the place to film a whole bunch of (mostly) security conferences.
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
James Kettle @jameskettle.com Director of Research at @portswigger.net
Also known as albinowax
Portfolio: https://jameskettle.com/
Glenn Pegden @glenn.pegden.com Good Guy Hacker, Dad, App Sec / Vuln Man / Pentest specialist and leader, conference organiser, volunteer, speaker and attendee, retro gamer, Blackburn Rovers and Leeds Knight fan ….. hacker
http://Glenn.pegden.com/findmeon
Lisa Forte @lisaforte.bsky.social Cyber security, climbing, caving and diving! 💜
spencer @bsky.ethicalthreat.com 🛠️ Former Sysadmin, now Pentester | Microsoft MVP | Helping IT teams make their environment harder to attack
Pentesting -> SecurIT360
Podcast -> CyberThreatPOV
Active Directory Security Resources for IT Admins 👇
https://go.spenceralessi.com/adsecurity
James 🏴 @two06.bsky.social Targeted Ops @TrustedSec. Hacker of things, writer of bad code. This is our world now... the world of the electron and the switch, the beauty of the baud.
https://linktr.ee/two06
ZenMaster @zenm4ster.bsky.social 
Rob Joyce @rgblights.bsky.social Cyber guy. Former NSA cybersecurity director and chief of TAO. Lover of memes. Warning - occasional outrageous Christmas light content.
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
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
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.
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.
Jake Williams @malwarejake.bsky.social Breaker of software, responder of incidents, IANS Faculty, VP R&D Hunter Strategy.
rootsecdev @rootsecdev.bsky.social Security Consultant @TrustedSec | Military grade meme poster, researcher, cloud penetration tester, voider of warranties. My thoughts are my own.
Tim Medin @timmedin.bsky.social Kerberoast Guy • RedSiege CEO • Hater of Pants • Former SANS 560 Author, Senior Instructor • Packers owner • Work Req: http://redsiege.com/contact
chompie @chompie.rip hacker, poster, weird machine mechanic
https://chompie.rip
Chris Truncer @christruncer.bsky.social Deputy Chief Red Team @ CISA && BJJ && Open Source Dev
harmj0y @harmj0y.bsky.social Researcher @SpecterOps. Coding towards chaotic good while living on the decision boundary. #dontbanequality
Ring3API 🇺🇦 @ntlmrelay.bsky.social https://x.com/ntlmrelay
#ThreatHunting / #BlueTeam engineer. I'm just looking for traces in the logs. Reading and retweeting cool stuff. MITRE ATT&CK Defender:CTI,SOCAsses,AE,PTM,THDE.
Chris P aKa Ghostie @therealchrisp.com I'm no expert, I've just had a lot of practice.
Red Team Lead.
My SE101 blog is not abandoned, just not had much time https://blog.ghostie.org/
Used to be Ghostie_ on the other place.
Kuba Gretzky @mrgretzky.breakdev.org Offensive security tools developer. Malware developer, hobby music producer, bedroom DJ & ex-MMO game hacker. Creator of Evilginx / Bartender @ BREAKDEV RED.
b33f @fuzzysec.bsky.social 意志 / Antiquarian @ IBM Adversary Services / Ex-TORE ⚔️🦅 / I rewrite pointers and read memory / AI Psychoanalyst / Teaching
at labs.calypso.pub
Andy Gill @zephrfish.yxz.red Defcon goon, Adversarial Architect. Photography, Driving, Blog and general purveyor of chaos. Metal/DnB Fan creator and owner of https://lms.zsec.red
evilmog @mog.evil.af X-Force, Shenanigans, Hashcat, Church of WiFi, Black Badges, MUDs, Dad Jokes, some Infosec.
Twitter: @evil_mog
Justin @bandrel.evil.af Pentester/Hacker Recovering twitter addict 
SwiftOnSecurity @swiftonsecurity.com computer security person. former helpdesk
netbiosX @netbiosx.bsky.social Purple Team
Tim McGuffin @tim.mcguff.in @NotMedic from that other place.
Adversarial Cartographer. DEFCON Staff & CFP Board. MS in DF. Fmr Fire/EMS. Red and Blue. Builder. Tinkerer. Chaotic Good.
Marcello @byt3bl33d3r.bsky.social Running on vibes. Cyber vibes.
Dominic White @singe.bsky.social Hacker at Orange Cyberdefense's SensePost Team
https://hello.singe.za.net/
Olaf Hartong @olafhartong.nl Security researcher with a camera | @FalconForce.nl | Microsoft MVP | Snow man role model | https://youtube.com/@olafhartong
Yarden Shafir @yardenshafir.bsky.social A circus artist with a visual studio license
Hexacorn @hexacorn.bsky.social Red Brain, Blue Fingers
Malware Analysis, Reverse Engineering, Threat Hunting, Detection Engineering, DFIR, Security Research, Programming, Curiosities, Software Archaeology, Puzzles, Bad dad jokes
https://www.hexacorn.com/blog/
hexacorn@infosec.exchange
XPN @xpnsec.com Hacker for hire at @specterops.bsky.social
Blog: https://blog.xpnsec.com
Justin Elze @handle.invalid CTO @TrustedSec.com | Former Optiv/SecureWorks/Accuvant Labs/Redspin | Race cars
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)
Tautology @tautology.uk @tautology0
@tautology@infosec.exchange
@tautology.uk
vi is the best editor. The Oxford comma is totally superfluous and does not need to be used in 90% of cases. "Die Hard" is not a Christmas film. "Internet" is a proper noun.
Random Robbie @what-security.co.uk #infosec | #exploiter | #asm | fox | #LFC | scanner of the internet | #wordpress exploiter | #greynoise lover. | #Bugbounty hunter | Northerner | #UK
Scott Helme @scotthelme.bsky.social Hi, I'm Scott Helme, a Security Researcher, Entrepreneur and International Speaker. I'm the creator of Report URI and Security Headers, and I deliver world renowned training on Hacking and Encryption.
https://scotthelme.co.uk
Jason Haddix @jhaddix.bsky.social CEO, CISO, Trainer, Hacker, and Speaker.
AI + hacking + sec leadership.
ex:BuddoBot-Ubisoft-Bugcrowd-Fortify-HP-Redspin-Citrix.
Rob Fuller @mubix.com (he/him) Dad / Husband / Marine / Student / Teacher / @Hak5 / @NoVAHackers / @SiliconHBO / @NationalCCDC / @MARFORCYBER Auxiliary
HollyGraceful @hollygraceful.bsky.social I climb stuff and I hack things.
Mark C @largecardinal.bsky.social Logician (PhD), Quantum Hacker, ML miscreant. Feral academic. Co-founder of Quantum Village @ DEF CON- M Peiter “Mudge” Zatko @mudge.bsky.social DARPA/Google/Stripe/L0pht/Twitter/…/DARPA/[redacted]
https://en.wikipedia.org/wiki/Peiter_Zatko
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.
the grugq @thegrugq.bsky.social 
Marcus Hutchins @malwaretech.com threads.com/@malwaretech
https://linkedin.com/in/malwaretech
https://marcushutchins.com
Rachel Tobac @racheltobac.bsky.social Hacker & CEO @SocialProofSec security awareness/social engineering training, videos, talks | 3X @DEFCON🥈 | Ex Chair @WISPorg | Ex @CISAgov Technical Advisory Council under Director Jen Easterly
pwneip @pwneip.bsky.social Principal RTO @F500, SANS Instructor & #SEC565 Red Team Ops Author, Red Team Village lead, former Bishop Fox, US Air Force. Tweets are my own, memes are stolen
Will T @bushidotoken.net 🇬🇧 | Senior Threat Intelligence Advisor at Team Cymru | Co-author SANS FOR589 | Co-founder Curated Intel
Jack Rhysider @jackrhysider.bsky.social Creator of Darknet Diaries.
Verification: https://twitter.com/JackRhysider/status/1675298532406984707
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
Kevin Beaumont @doublepulsar.com cybersecurity weather man. scanning the horizons for cloudy cyber. Expert at nothing except computer rubbish. Anti-ransomware since 2015.
Alex Chapman @ajxchapman.bsky.social Full Time #BugBounty Vulnerability Researcher
https://blog.ajxchapman.com
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?
BSides Las Vegas @bsideslv.org BSides Las Vegas will take place August 3-5, 2026
Las Vegas · bsideslv.org
UK_Daniel_Card @mrr3b00t.bsky.social 
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
SteelCon @steelcon.info SteelCon is a family friendly hacker conference in Sheffield.
Next event is July 2026.