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)
KL3FT3Z @toxy4ny.bsky.social Red Teamer & Offensive AI Researcher. Creator of redteam-ai-benchmark and other open-source redteam tools. Writing about LLM security and safety, system’s hardening and adversarial AI.
Gitlab.com- https://gitlab.com/toxy4ny
Dev.to - https://dev.to/toxy4ny
leHACK @le-hack.bsky.social 🗓️ #leHACK 2026 // June 26-27, 2026
🎟️Tickets : https://www.billetweb.fr/lehack-2026-brave-new-world
📍 https://www.cite-sciences.fr
Stéphane Bortzmeyer @at.bortzmeyer.fr https://www.bortzmeyer.org/
The Official Pulpit of CULT OF THE DEAD COW @cultdeadcow.com www.cultdeadcow.com
Synacktiv @synacktiv.com Offensive security company. Dojo of many ninjas. Red teaming, reverse engineering, vuln research, dev of security tools and incident response.
Ján Trenčanský @j91321.bsky.social EDR R&D team lead at ESET. Opinions are my own.
@j91321@infosec.exchange
Alex Neff @al3x-n3ff.bsky.social Pentester | Maintainer of NetExec | aneff.io
@b-paul.bsky.social @b-paul.bsky.social Pentest / redteam @synacktiv.com
Red Siege @redsiege.com Penetration Testing, Purple Team, Red Team & Adversary Emulation.
Let our Offense, Prepare your Defense. https://redsiege.com
#weareoffensive
Clément Notin @cnotin.bsky.social 
💥 leonjza @leonjza.bsky.social [ 'cto @sensepost.com', '@orangecyberdef', 'caffeine fueled', '(╯°□°)╯︵ ┻━┻', 'security guy', 'metalhead', 'i saw your password', 'KOOBo+KXleKAv+KXlSnjgaM=' ]
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
Dominic White @singe.bsky.social Hacker at Orange Cyberdefense's SensePost Team
https://hello.singe.za.net/
r1cksec @r1cksec.bsky.social Data breach revealed,
Malware lurks, silent, stealthy -
OSINT tracks the thread.
URLs I post may contain malware – be careful and check yourself before running anything.
https://github.com/r1cksec
infosec.exchange/@r1cksec
Thomas Seigneuret @zblurx.bsky.social Security researcher, pentester
Maintainer of NetExec, DonPAPI, dploot, certsync, and all the stuff on https://github.com/zblurx
Mänu @emanuelduss.ch IT security. Linux & network protocols. Pentesting web applications, networks & AD infrastructures. Mostly technical stuff here. https://emanuelduss.ch
WarthogTK @warthogtk.bsky.social Pentester | MD (Intensivist & Healthcare Simulation in another life)
Infosec, Geopolitics, Defense, Disinformation, Hybrid warfare | DCS, Gaming, Metal
(OU=FR,DC=WORLD,DC=UNIVERSE)
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
Swissky @swissky.bsky.social RedTeam | Pentest
Author of PayloadsAllTheThings & SSRFmap
http://github.com/swisskyrepo
Atsika @atsika.bsky.social Red Team enthusiast | Malware development enjoyer | Adversary Simulation at @quarkslab.bsky.social
Andrea P @decoder-it.bsky.social 
James Forshaw @tiraniddo.dev Security researcher in Google Project Zero. Author of Attacking Network Protocols. Posts are my own etc. 
Renaud Lifchitz ⠵ @nono2357.bsky.social Computer hacker, infosec & blockchain
Laurent Cheylus @lcheylus.bsky.social Mastodon: @lcheylus@bsd.network
X/Twitter: @lcheylus
Cybersecurity Linux BSD OpenBSD - Lyon addict
Messages in French 🇫🇷 and English 🇬🇧
@nolimitsecu.bsky.social @nolimitsecu.bsky.social 
@theprodigyofficial.bsky.social @theprodigyofficial.bsky.social 
Paul Seekamp @nullenc0de.bsky.social I spend a significant amount of time reading security stuff.
Co-Founder/Partner @CoastlineCyber
https://leanpub.com/internal-field-guide
Alexei Skorov @skorov.volkis.au Hacking | Climbing | Trance | Husky Dad
Fighting to keep hacker culture alive in Australia 💗
Co-Founder @ volkis.au
Matthieu Audibert @matthieu-audibert.fr Officier @Gendarmerie - docteur en droit privé et sciences criminelles @uparisnanterre.bsky.social #Cybercriminalité #Cybersécurité - #ComCyberMi | Compte personnel
Raphael Mudge @raphaelmudge.bsky.social Riding around in the breeze. USAF Veteran.
SensePost @sensepost.com Work like hell,
Share all you know,
Abide by your handshake,
Have fun. - Dan Geer
The Hacker News | #1 Trusted Source for Cybersecurity News [Uno… @thehackernews.com.web.brid.gy The Hacker News is the top cybersecurity news platform, delivering real-time updates, threat intelligence, data breach reports, expert analysis, and actionable […]
🌉 bridged from 🌐 https://thehackernews.com/: https://fed.brid.gy/web/thehackernews.com
@domchell.bsky.social @domchell.bsky.social 
the grugq @thegrugq.bsky.social 
Alh4zr3d @alh4zr3d.bsky.social Legal Criminal | Twitch cult leader | InfosecPrep founder | Lovecraft scholar | Soros mercenary | Spiritual cargo shorts wearer | Cthulhu fhtagn
Schneier on Security @schneier.com An automated feed of posts from Bruce Schneier's blog. https://www.schneier.com/
Nicolas Krassas @dinosn.bsky.social Head of Threat & Vulnerability Mgmt @ Henkel AG & Co. KGaA
https://t.co/NC1orlKrW3
Also at : @dinosn
SpecterOps @specterops.io Creators of BloodHound | Experts in Adversary Tradecraft | Leaders in Identity Attack Path Management
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
Orange Tsai @orange.tw This is 🍊
Nicolas Caproni @caproni.fr Head of Sekoia Threat Detection & Research (TDR) team • Cyber Threat Intelligence • Detection Engineering • SOC Platform 🇫🇷 🇪🇺 • Hip-Hop • Basketball 
Jonathan Salwan @jonathansalwan.bsky.social Program analysis, reverse engineering and vulnerability research at
Apple SEAR. Some other stuff on https://shell-storm.org and http://github.com/JonathanSalwan 
James Kettle @jameskettle.com Director of Research at @portswigger.net
Also known as albinowax
Portfolio: https://jameskettle.com/
Andy Robbins @andyrobbins.bsky.social aka wald0
Gabriel Thierry @gabrielthierry.eurosky.social Journaliste, aux manettes de la newsletter cybercrime Pwned | gabrielthierry@protonmail.com https://linktr.ee/gabrielthierry
PortSwigger @portswigger.net We are a leading provider of software and learning on web security. We make Burp Suite and the Web Security Academy.
Peter « corelanc0d3r » Van Eeckhoutte @corelanc0d3r.bsky.social Owner Corelan Consulting🔸Cybersecurity Researcher & Trainer🔸Hacker🔸Outgoing Introvert (INFJ-A)🔸Book lover🔸Fountain pen affictionado🔸Chess amateur🔸 Foodie🔸❤️ for EQ+IQ
Quarkslab @quarkslab.bsky.social Securing every bit of your data
https://quarkslab.com
Mehdi Talbi @mtalbi.bsky.social 
Binni Shah @binitamshah.bsky.social Linux Evangelist, Malwares , Security Enthusiast, Investor, Contrarian , Neurology , Philanthropist , Reformist ,Sigma female
Metasploit @metasploit-r7.bsky.social Official account of the Metasploit Project, part of the Rapid7 family.
Mastodon: @metasploit@infosec.exchange
Slack: http://metasploit.com/slack
Kevin Beaumont @doublepulsar.com cybersecurity weather man. scanning the horizons for cloudy cyber. Expert at nothing except computer rubbish. Anti-ransomware since 2015.
RastaMouse @rastamouse.me make pic +relax
Malware Unicorn @malwareunicorn.bsky.social @Straiker. Ex-Microsoft. Ex-Meta RedTeam, Ex-Endgame, Ex Fireeye. malwareunicorn.org
Gynvael Coldwind @gynvael.bsky.social Security researcher/programmer ⁂ Managing director @ HexArcana ⁂ @DragonSectorCTF founder ⁂ he/him
x0rz @x0rz.bsky.social Cybersecurity & Threat Intelligence. Knowledge is power, France is bacon 🥓
Hash Miser ✊🇺🇦 @hash-miser.bsky.social Internet janitor, #CERT #BlueTeam and Whisk(e)y enthusiast "Everything you do is useless ! Enjoy 🍻" hash_miser@infosec.exchange
Azeria @azeria-labs.com Founder of Azeria Labs, Trainer, Author of Blue Fox: Arm Assembly Internals & Reverse Engineering
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
StalkR @stalkr.net Security enthusiast
https://twitter.com/stalkr_
https://mastodon.social/@StalkR
https://infosec.exchange/@StalkR
netbiosX @netbiosx.bsky.social Purple Team
Nicolas Grégoire @agarri.fr Web hacker 😈
Burp Suite Pro trainer 👨🏫
Maintainer of @mastering-burp.agarri.fr 🛠️
Clément Labro @itm4n.bsky.social Pentest & Windows security research
TrendAI Zero Day Initiative @thezdi.bsky.social TrendAI Zero Day Initiative™ (ZDI) is a program designed to reward security researchers for responsibly disclosing vulnerabilities.
malmoeb.bsky.social @malmoeb.bsky.social Head of Investigations at InfoGuard AG - dfir.ch
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.
marc rees @reesmarc.bsky.social Journaliste à L’informé (linforme.com) spécialisé droit & tech (LCEN, copie privée Arcom, propriété intellectuelle, rens, CADA, etc.). Ex-RC NextINpact.
Insta http://instagram.com/marcseer- W Will Schroeder @wills.bsky.social
Ivanlef0u @ivanlef0u.bsky.social ivanlef0u.fr
mxcarron @mxcarron.bsky.social - K Korben @korben.info
newsoft @newsoft.bsky.social Hacker, cyber security expert, troll, etc.
Hervé Schauer @herve-schauer.bsky.social CEO @HS2formation👨🏻🎓http://www.hs2.fr http://www.schauer.fr 86:#LogicielLibre 87:#Cybersécurité 1989:#HSC👨💻@OSSIRFrance @Club27k @clusif 🎧@nolimitsecu
Richard Bejtlich @taosecurity.bsky.social Former USAF intel officer. Early info war practitioner. Created GE-CIRT. Mandiant's first CISO. #NetworkSecurityMonitoring for @corelight-inc. Author. Latest books #ad amzn.to/3B2AcMc
Jeff Moss @thedarktangent.bsky.social thedarktangent@defcon.social
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. 🏳️🌈
Laughing Mantis @laughingmantis.bsky.social VXer, Computer Goth, Malware Musician
Rob Fuller @mubix.com (he/him) Dad / Husband / Marine / Student / Teacher / @Hak5 / @NoVAHackers / @SiliconHBO / @NationalCCDC / @MARFORCYBER Auxiliary
Marcello @byt3bl33d3r.bsky.social Running on vibes. Cyber vibes.
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
HackTheBox @hackthebox.bsky.social 
XPN @xpnsec.com Hacker for hire at @specterops.bsky.social
Blog: https://blog.xpnsec.com
Sam Curry @zlz.bsky.social 
harmj0y @harmj0y.bsky.social Researcher @SpecterOps. Coding towards chaotic good while living on the decision boundary. #dontbanequality
mpgn @mpgn.bsky.social Flibustier du net ̿ ̿̿'̿'\̵͇̿̿\=(•̪●)=/̵͇̿̿/'̿̿ ̿ ̿ ̿
Podcast Hack'n Speak http://anchor.fm/hacknspeak
Github https://github.com/mpgn
Burp Suite @burpsuite.bsky.social Burp Suite is the leading software for web security testing.