Wietze @wietzebeukema.nl Threat Detection & Response. Interested in cyber security, tech and politics. Views are my own, unless retweeted.
Marcus Bakker @bakk3rm.bsky.social Cyber Defence Specialist
mbsecure.nl/about/
@alcyonsecurity.bsky.social @alcyonsecurity.bsky.social 
Anatoly Shashkin💾 @dosnostalgic.bsky.social MS-DOS gaming enthusiast, YouTuber, admirer of cats, RU in NY.
Ask me about DOS games! Tell me your DOS game memories!
I repost and swear a lot.
(He/Him)
YouTube: youtube.com/dosnostalgic
Web: dosnostalgia.com
Tip me: https://ko-fi.com/dosnostalgic
Dave Aitel @daveaitel.bsky.social - N Nico Waisman @nicowaisman.bsky.social CISO @Lyft - Former Binary entomologist - Opinions are my own.
Justin Schuh @justinschuh.com Back in Chicago as a stay-at-home dad and small business owner. Expect some infosec/privacy/safety, 3D printing, and politics.
infosec.exchange/@jschuh
Defunct: twitter.com/justinschuh
Bas @anti.computer Recreational strangler & Parentheses enthusiast
Debugger @debugger.bsky.social I’m a problem solver with a passion for hardcore troubleshooting. If you think it can’t be fixed, that’s exactly when I get interested.
OrangeCon @orangecon.nl The Dutch Cybersecurity Conference! Experience the Hackers Community in Amsterdam, on June 4th 2026!
Pauperhosting @pauperhosting.nl Vibehosting sinds 1974!
http://pauperhosting.nl
Max 'Libra' Kersten @maxkersten.nl Malware analyst and reverse engineer, author of the Binary Analysis Course. DMs are always open. Opinions are my own and not the views of my employer.
OJ @oj.cx I'm here to blurt climbing stuff, and periodically whinge.
harmj0y @harmj0y.bsky.social Researcher @SpecterOps. Coding towards chaotic good while living on the decision boundary. #dontbanequality
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
Carlos Perez @thedarkoperator.bsky.social - Cybersecurity since 1998
- Information Security jack of all trades
- Hacker
https://www.darkoperator.com
Binary Defense @binarydefense.com We bring the attacker’s mindset to every move, building defenses specifically designed to combat threats. Founded and led by practitioners who live and breathe security, we know what matters in the trenches - because we’re in them with you.
Thijs Alkemade @xnyhps.nl Security Researcher.
Tijme Gommers @tijme.bsky.social Offensive Security at ABN AMRO Bank 🏦. Red Teaming, Malware Development & Reverse Engineering 🐙. Cyber Cyber Cyber ⚡️.
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.
b1ack0wl @b1ack0wl.com 0day Researcher @ ████████████ / Baker / 0wl
// I post random things on here
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
Follow the Money @ftm.nl Follow the Money is een platform voor onderzoeksjournalistiek met een glashelder doel: waarheidsvinding in dienst van de samenleving. https://ftm.nl
Marc Smeets @marcoverip.bsky.social Does a thing or two with red teaming @ Outflank | part time race and drift car instructor
@egyp7 @egyp7.bsky.social I like juggling, Bash, chess puzzles, and good exploits. Worked on Metasploit for some years. 💙💜🩷
@egypt@mastodon.social
Gert van Dijk @i6t.nl IT dev/security/ops 🤓 — posts in NL&EN — was combating disinfo on Twitter 🧹 — 🏳️🌈 but 🤷♂️ — gertvdijk on X, @gertvdijk@mastodon.social
MITRE ATT&CK @attack.mitre.org MITRE ATT&CK® - A knowledge base for describing the behavior of adversaries. Replying/Following/Reposting ≠ endorsement.
Justin Elze @handle.invalid CTO @TrustedSec.com | Former Optiv/SecureWorks/Accuvant Labs/Redspin | Race cars
HD Moore @hdm.io runZero & Metasploit
EricLaw 🎻 @ericlawrence.com Seek first to understand.
Impatient optimist. Dad. Zetetic. Author. Runner. Speaker. Made Fiddler & SlickRun. My code runs in your browser. @ MSFT 19yrs+ on web & security. I speak for myself.
he/him
https://ericlawrence.com/
https://textslashplain.com/
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
David Litchfield @litchfield.bsky.social Dad, Powerlifter, Security at Apple, Photographer
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
Malware Unicorn @malwareunicorn.bsky.social @Straiker. Ex-Microsoft. Ex-Meta RedTeam, Ex-Endgame, Ex Fireeye. malwareunicorn.org
Mark Russinovich @markrussinovich.bsky.social CTO of Microsoft Azure, author of novels Rogue Code, Zero Day and Trojan Horse, Windows Internals, Sysinternals tools. Opinions are my own.
HD Moore @hdm.infosec.exchange.ap.brid.gy 🌉 bridged from ⁂ https://infosec.exchange/@hdm, follow @ap.brid.gy to interact
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
buherator @buherator.bsky.social "I'm interested in all kinds of astronomy."
https://scrapco.de
Mostly cross-posting from Fediverse: @buherator@infosec.place
jduck @jduck.me Continuously learning about computer security through research and development.
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
James Forshaw @tiraniddo.dev Security researcher in Google Project Zero. Author of Attacking Network Protocols. Posts are my own etc. 
SpecterOps @specterops.io Creators of BloodHound | Experts in Adversary Tradecraft | Leaders in Identity Attack Path Management
Dave Maasland @davemaasland.bsky.social Connecting & inspiring people to create a safer, digital world | Passion for IT Security | CEO @ESETNL
Rickey Gevers @uid.bsky.social Exposed Russian, Chinese, Iranian & Indian state sponsored hackers. Founded @waarneming & @scatsec. Currently @RespondersNU. 4.669; 3.14159.
Women In Cybersecurity Community Association @womenofwicca.bsky.social 👩💻 Talks and drinks among ladies to discuss all things InfoSec 🔑🇳🇱
womenofwicca.nl #WICCA_NL
Conference with an all-women speaker line-up designed to highlight women’s technical achievements in the cybersecurity field. -> wiccon.nl
XPN @xpnsec.com Hacker for hire at @specterops.bsky.social
Blog: https://blog.xpnsec.com
Mitja Kolsek @mkolsek.bsky.social CEO of ACROS Security; Co-founder of 0patch (https://0patch.com)
Wishing billionaires would stop buying social platforms and making us rebuild synapses elsewhere
https://acrossecurity.com
Donny Maasland @donnymaasland.nl I work with computers
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
Flangvik @flangvik.bsky.social Team Lead Kovert AS, previously Red Team TrustedSec, terrible creator of InfoSec content 📹Opinions are my own and not the views of my employer.
rayanlecat @handle.invalid Pentester
rootsecdev @rootsecdev.bsky.social Security Consultant @TrustedSec | Military grade meme poster, researcher, cloud penetration tester, voider of warranties. My thoughts 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
Joe Grand @joegrand.bsky.social Hardware hacker, computer engineer, former L0pht member and juvenile delinquent, sometimes known as Kingpin. https://joegrand.com
Erik Remmelzwaal @erik.zolder.io Co-Founder Zolder.io | Promoter of Atticsecurity.com | Creator of Cybersecurity | Lover of the Misses | Father of Two | Coach of Fieldhockey | Haver of no Worries
Thijs Bosschert @thice.bsky.social Allround Security, IR & SOC professional. Escape room, CTF & game creator. Organizer WHY2025 CTF. Mediocre lockpicker. CTF teams: Eindbazen, Jobless Hackers and Spotless.
https://cybersecurity-escaperoom.com/
https://thice.nl/
https://ctf.why2025.org
LiveOverflow 🔴 @liveoverflow.bsky.social wannabe hacker... he/him
🌱 grow your hacking skills https://hextree.io
Thomas Bosboom @thomasbosboom.bsky.social Dutch (import #010) guy working in a London based team of a US company. Talks about Apple, Security, Tech.
Remember: outrage and panic are common content engagement tactics.- S Maarten Boone @staatsgeheim.bsky.social
Bert Hubert 🇺🇦🇪🇺🇺🇦 @berthubert.bsky.social Software developer, entrepreneur, former government regulator, current government advisor, amateur scientist, publicist. https://berthub.eu/ More active on Mastodon -> @bert_hubert@eupolicy.social -> Nederlandse BlueSky @berthub.eu
Andrew Case @attrc.bsky.social Volatility Core developer, Dir. of Research Volexity, LSU Cyber
samy k͓͓͓͓͓͓͓͓͓͓͓͓͓͓͓amkar͛͛͛͛͛͛͛͛͛͛͛͛͛͛͛ @sa.my think bad, do good. | https://sa.my
Olaf Hartong @olafhartong.nl Security researcher with a camera | @FalconForce.nl | Microsoft MVP | Snow man role model | https://youtube.com/@olafhartong
Hunt & Hackett @huntandhackett.com We are experts in cybersecurity, our specialists operate on the frontlines to help customers prevent, detect and respond to today’s most advanced adversaries.
Visit our website: www.huntandhackett.com
John Opdenakker @j-opdenakker.bsky.social Blogger | #Infosec | #AppSec | Security awareness | Occasional Public Speaker | Cycling | Running | Posts might contain bad humor, sarcasm or irony | Takes your security seriously!
https://johnopdenakker.com
Kevin Beaumont @doublepulsar.com cybersecurity weather man. scanning the horizons for cloudy cyber. Expert at nothing except computer rubbish. Anti-ransomware since 2015.
Stefano Zanero @raistolo.bsky.social Tinkerer, security geek, recovering entrepreneur, full professor at www.polimi.it, frequent flyer, private pilot, and generic pundit. He/Him 🏳️🌈
For aviation follow me on Instagram, same id!
MG @mg.lol 
sysengineer @sysengineer.dev I do not give Facebook permission to print anything off my computer
Dominic White @singe.bsky.social Hacker at Orange Cyberdefense's SensePost Team
https://hello.singe.za.net/
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
Laughing Mantis @laughingmantis.bsky.social VXer, Computer Goth, Malware Musician
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
Nate Warfield @n0x08.bsky.social Network Security | Hacker | WIRED25 2020 | CTI-League Founder | Security Researcher
Rob Fuller @mubix.com (he/him) Dad / Husband / Marine / Student / Teacher / @Hak5 / @NoVAHackers / @SiliconHBO / @NationalCCDC / @MARFORCYBER Auxiliary
FX of Phenoelit @fxv2.bsky.social Hacker reincarnation (Lifetime Achievement Pwnie Award 2017 old school certified)
Will Dormann is on Mastodon @wdormann.bsky.social I play with vulnerabilities and exploits.
While this site initially showed promise, I've grown tired with its lack of improvement.
You'll find me @wdormann@infosec.exchange on Mastodon.
Runa Sandvik @runasand.bsky.social Founder of Granitt, securing journalists and at-risk people around the world. 
Mathy Vanhoef @vanhoefm.bsky.social Prof. @KU_Leuven | Research in Network & Software Security | Known for WPA2 KRACK attack, Dragonblood, and FragAttacks | Open to consultancy | Ex-Postdoc NYU
Yarden Shafir @yardenshafir.bsky.social A circus artist with a visual studio license
chompie @chompie.rip hacker, poster, weird machine mechanic
https://chompie.rip
Tarjei @kernelpool.bsky.social 
argp @argp.bsky.social Hacker. Ascetic. Phrack author. The most technical boy in town.
hackerfantastic.crypto @hackerfantastic.bsky.social Co-Founder https://hacker.house cyber security assurance & hacker training ~ ISBN9781119561453 ~ a book on professional hacking. Contact for competitive quotes on cyber security projects. 
Joanna Rutkowska @rootkovska.bsky.social https://tracesofhumanity.org
Previously: Golem Foundation/Wildland, Qubes OS, hardware/virtualization/OS security research.
Pwnallthethings @pwnallthethings.bsky.social Just thinking out loud.
Maddie Stone @maddiestone.bsky.social Security Researcher at Google Project Zero. 0-days all day. Love all things reverse engineering. she/her
Chris Eng @ceng.bsky.social Still deciding if I even like social media any more.
Azeria @azeria-labs.com Founder of Azeria Labs, Trainer, Author of Blue Fox: Arm Assembly Internals & Reverse Engineering
Ben Nagy @rantyben.bsky.social I turn latin poetry into long lists of floating point numbers. For (and only for) the purpose of potential employment I have a couple of phds or whatever.
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?
4Dgifts @4dgifts.bsky.social culprit %x%x%n%n
Filippo Valsorda @filippo.abyssdomain.expert @geomys.org founder / RC F'13, F2'17
Cryptogopher / Go cryptography maintainer
https://filippo.io / https://github.com/FiloSottile
https://mkcert.dev / https://age-encryption.org
https://sunlight.dev / https://filippo.io/newsletter
Haroon Meer @haroonmeer.canary.love Security Geek. We build Thinkst Canary - https://canary.tools
Matt Johansen @mattjay.com Friendly neighborhood cybersecurity guy | expect infosec news, appsec, cloud, dfir. | Long Island elder emo in ATX.
vulnu.com <- sign up for my weekly cybersecurity newsletter
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.