Donncha Ó Cearbhaill @donncha.is Head of Security Lab - Amnesty International
Hunting spyware and unlawful surveillance targeting activists and civil society.
For help with digital forensics or suspect spyware threats contact: https://securitylab.amnesty.org/get-help/
hakan @hatr.bsky.social reporter covering cyber (both crime and state-sponsored) for Der Spiegel and ZDF, short overview at https://linktr.ee/hakantanriverdi, Signal: hakan.25
Chris Wysopal @weld.bsky.social Gray haired gray hat. Co-founder Veracode. Former L0pht security researcher. Builds tools to find and fix vulnerabilities in code at scale.
Sylvain Sarrailh @tohad.bsky.social Creative director and founder of Umeshu Lovers Studio : https://umeshulovers.com/
Danghost : https://store.steampowered.com/app/1812170/Danghost/
codewhitesec.bsky.social @codewhitesec.bsky.social Red Teaming. Security Research. Continuous Penetration Testing. Threat Intelligence.
malmoeb.bsky.social @malmoeb.bsky.social Head of Investigations at InfoGuard AG - dfir.ch
Greg Lesnewich @greg-l.bsky.social oh great, now I’m on bluesky 
Interrupt Labs @interruptlabs.bsky.social We’re here to provide world-leading vulnerability research and research capabilities. From browsers, mobile, automotive and everything in between.
www.interruptlabs.co.uk
Raphael Mudge @raphaelmudge.bsky.social Riding around in the breeze. USAF Veteran.
Gareth Heyes @garethheyes.co.uk Web security researcher at PortSwigger. Author of JavaScript for Hackers, Shazzer and Hackvertor.
https://javascriptforhackers.co.uk/
https://garethheyes.co.uk/
Frycos @frycos.bsky.social Private account! Red teamer @codewhitesec. @frycos@infosec.exchange @frycos@X
Matthias Kaiser @matthiaskaiser.bsky.social Vulnerability Researcher. 0xACED. Ex-Apple. Posts are my own.
Izobashi @izobashi.bsky.social Security researcher at the ZDI
Izobashi.info
Meysam @r00tkitsmm.bsky.social Security Researcher.
hypr @hyprdude.bsky.social vuln researcher+exploit dev | bordeaux enjoyer | friend of all cats | him/he | https://blog.coffinsec.com
Stephen Fewer @stephenfewer.bsky.social Senior Principal Security Researcher at @rapid7.com. Specializing in software vulnerabilities and exploitation. stephenfewer.github.io
Areizen @areizen.bsky.social Reverse engineer @synacktiv.com. I appreciate Android related stuff
0xcsandker @0xcsandker.bsky.social Security enthusiast, likes Windows internals, AD & Azure.
Blogging at: https://csandker.io
Quentin M @0xdagger.bsky.social Security ninja
d0ntrash @d0ntrash.bsky.social Security Researcher @neodyme.io | CTF, Fuzzing, Embedded Security
@cfreal.bsky.social @cfreal.bsky.social 
Andrey Konovalov @andreyknvl.bsky.social Security engineer at http://xairy.io. Focusing on the Linux kernel. Maintaining @linkersec.bsky.social. Trainings at http://xairy.io/trainings.
0xTen @0xten.bsky.social android/linux kernel @ Vigilant Labs | ctfs (pwn) w/ CoR + ELT
dhn @0xdhn.bsky.social By the power of truth, I, while living, have conquered the universe - /OS(C(P|E)|EE)/ -- Red teamer @codewhitesec.bsky.social | @dhn@infosec.exchange | @dhn_ on X
0x4d5a @0x4d5a.bsky.social Security Researcher @ Neodyme. Windows Internals, Reversing, Fuzzing, CTF
Markus Wulftange @mwulftange.bsky.social Principal Security Researcher and Pâtissier at @codewhitesec.bsky.social
@iamnoooob.bsky.social @iamnoooob.bsky.social 
Daan Keuper @daankeuper.bsky.social Security researcher @defionlabs.bsky.social
Victor Fresk0 @hacefresko.com hacking for fun ~ likes bug hunting and vuln research
https://hacefresko.com
Khaled Nassar @notkmhn.bsky.social 
SinSinology @sinsinology.bsky.social Pwn2Own 20{22,23,24,24.5}, i look for 0-Days but i find N-Days & i chase oranges 🍊
https://summoning.team/
Harsh Jaiswal @rootxharsh.bsky.social Vulnerability Research
Paolo Stagno @voidsec.bsky.social Director of Research at Crowdfense
Windows Vulnerability Researcher and Exploit Developer, ex-Exodus Intelligence
voidsec.com
guyru @guyru.bsky.social Vulnerability research, cryptography, FOSS, finance and random stuff.
Leading Cellebrite's iOS research.
Piotr Bazydło @chudypb.bsky.social Principal Vulnerability Researcher at the watchTowr | Previously: @thezdi | https://chudypb.github.io
AbuMuslim (أبومسلِم) @m19o.bsky.social Hacking stuff, building stuff, and occasionally explaining it on stage. Co-founder @BSides_ABQ. Board @OWASPEgypt. R&D @aivillage_dc. YT @CyberDose_. Coffee++.
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
Andy Robbins @andyrobbins.bsky.social aka wald0
Duane Michael @subat0mik.bsky.social Adversary Simulation Operator, Researcher, Teacher, and Leader @SpecterOps
Lee Chagolla-Christensen @tifkin.bsky.social I like making computers misbehave. Does stuff at http://specterops.io.
Github: https://github.com/leechristensen
Mastodon: @tifkin_@infosec.exchange
TheWover @thewover.bsky.social A mountain man with an Internet connection and a professional interest in malware.
Matt Hand @matterpreter.bsky.social Director of Security Research at Prelude💜 | Author of Evading EDR http://nostarch.com/evading-edr 📖 | Security research & windows internals 🦠
Jonny Johnson @jonny-johnson.bsky.social Principal Windows Security Researcher @HuntressLabs | Windows Internals & Telemetry Research
James Forshaw @tiraniddo.dev Security researcher in Google Project Zero. Author of Attacking Network Protocols. Posts are my own etc. 
Orange Tsai @orange.tw This is 🍊
@johnnyspandex.bsky.social @johnnyspandex.bsky.social 
Rohan Vazarkar @cptjesus.bsky.social Former Pentester
Engineer at SpecterOps
Author of BloodHound
Garrett @unsignedsh0rt.bsky.social AdSim @ SpecterOps
Alex Plaskett @alexplaskett.bsky.social Security Researcher | Pwn2Own 2018, 2021, 2022, 2024 | Posts about 0day, OS, mobile and embedded security.
RastaMouse @rastamouse.me make pic +relax
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
@outflank.bsky.social @outflank.bsky.social 
Marc Smeets @marcoverip.bsky.social Does a thing or two with red teaming @ Outflank | part time race and drift car instructor
Dima @dima.ninja https://x.com/DaWouw
Emeric Nasi @emericnasi.bsky.social CyberSecurity researcher and founder of BallisKit. I have a passion for all infosec subjects especially redteam and writing offensive tools!
moloch @littlejoetables.bsky.social Offsec at OpenAI
Former Bishop Fox Red Team
Antonio Cocomazzi @splintercode.bsky.social offensive security - windows internals - reverse engineering | X: https://x.com/splinter_code | Mastodon: https://infosec.exchange/@splinter_code | GitHub: https://github.com/antonioCoco | Blog: https://splintercod3.blogspot.com/
@its-a-feature.bsky.social @its-a-feature.bsky.social @its_a_feature_ on Twitter | Mythic developer | @SpecterOps
SpecterOps @specterops.io Creators of BloodHound | Experts in Adversary Tradecraft | Leaders in Identity Attack Path Management
@hasherezade.bsky.social @hasherezade.bsky.social Programmer, #malware analyst. Author of #PEbear, #PEsieve, #TinyTracer. Private account. All opinions expressed here are mine only (not of my employer etc) ; https://hasherezade.net
vx-underground (automated mirror) @vxundergroundre.bsky.social The largest collection of malware source code, samples, and papers on the internet.
Password: infected
(unofficial, this is a bot! Maintained by a private individual, the bot can't handle retweets or replies, support soonish)
Clément Labro @itm4n.bsky.social Pentest & Windows security research
Jan "Duchy" Neduchal @handle.invalid infra @ VXUG. Staff Offensive Security Researcher @ S1.
James Kettle @jameskettle.com Director of Research at @portswigger.net
Also known as albinowax
Portfolio: https://jameskettle.com/
Kyle Avery @kyleavery.bsky.social https://x.com/kyleavery_
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.
Christopher Glyer @cglyer.bsky.social Microsoft Threat Intelligence Center - Former Incident Responder & Chief Security Architect @Mandiant
Jonas Vestberg @bugch3ck.bsky.social Privilege Escalation Engineer
Principal Consultant @ Reversec (formerly WithSecure Consulting)
checky d luffy @checkymander.bsky.social hacker, maldev, pokemon irl
eversinc33 🤍🔪⋆｡˚ ⋆ @eversinc33.bsky.social 
Alfie Champion @ajpc500.bsky.social Founder @ delivr.to | Threat Detection @ GitHub | Previously MWR
Lefteris Panos @lefterispan.bsky.social Interested in Offensive security
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
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
Jack Rhysider @jackrhysider.bsky.social Creator of Darknet Diaries.
Verification: https://twitter.com/JackRhysider/status/1675298532406984707
Juan Manuel Fernández @xc3ll.bsky.social Just a biologist that loves to break cyber-stuff. Adepts of 0xCC founder.
Chris Thompson @retbandit.bsky.social Head of Red team @ IBM X-Force. Black Hat Review Board. Founder and co-organizer of Offensive AI Con. Co-Founder of RemoteThreat. inveni et usurpa
Ivanlef0u @ivanlef0u.bsky.social ivanlef0u.fr
Brett Hawkins @h4wkst3r.bsky.social Adversary Services @xforce
https://h4wkst3r.github.io
@domchell.bsky.social @domchell.bsky.social 
Tyl0us @tyl0us.bsky.social Red Teamer @BHinfoSecurity. Implant Dev is my passion. 
David (DWIZZZLE) Weston @dwizzzle.bsky.social Corporate Vice President, OS Security and Enterprise @Microsoft
Samuel Groß @saelo.bsky.social Working on Project Zero, Big Sleep, and V8 Security. Personal account.
Alex Chapman @ajxchapman.bsky.social Full Time #BugBounty Vulnerability Researcher
https://blog.ajxchapman.com
Niklas B @niklasb.rce.associates research @ dfsec.com
Loic Guelorget @lguelorget.bsky.social Security Engineering Leader | 'Hope is not a strategy'.
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
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
syndrowm @syndrowm.com Hacker, CTF, CCDC, BJJ Brown Belt, python, rust, malware
https://www.offensivecontext.com
https://puck.tools
https://www.malicious.fit
b1ack0wl @b1ack0wl.com 0day Researcher @ ████████████ / Baker / 0wl
// I post random things on here
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
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
TrendAI Zero Day Initiative @thezdi.bsky.social TrendAI Zero Day Initiative™ (ZDI) is a program designed to reward security researchers for responsibly disclosing vulnerabilities.
the grugq @thegrugq.bsky.social 
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
Gynvael Coldwind @gynvael.bsky.social Security researcher/programmer ⁂ Managing director @ HexArcana ⁂ @DragonSectorCTF founder ⁂ he/him
Rob Fuller @mubix.com (he/him) Dad / Husband / Marine / Student / Teacher / @Hak5 / @NoVAHackers / @SiliconHBO / @NationalCCDC / @MARFORCYBER Auxiliary
jduck @jduck.me Continuously learning about computer security through research and development.