Feisty Duck @feistyduck.com The place for TLS and PKI education. Publishers of Bulletproof TLS and PKI. Authors of Practical TLS and PKI training. Cryptography & Security Newsletter.
beetle moses @beetlemoses.bsky.social PREORDER MY DEBUT BOOK OF COMICS: https://publishing.andrewsmcmeel.com/book/beetle-moses-a-comics-menagerie/
Signed comic prints: beetlemoses.bigcartel.com
@bsidesdublin.bsky.social @bsidesdublin.bsky.social Security BSides Dublin (BSidesDub) Official Twitter account. Next conference taking place at Trinity College Dublin on 24th May 2025. https://www.bsidesdub.ie/
Standard.site @standard.site Open standards for long-form & site lexicons. We build reusable schemas so the ecosystem can grow together.
To start, view definitions → https://standard.site
Docs → https://standard.site/docs
EUvsDisinfo @euvsdisinfo.eu We counter Kremlin information warfare, one claim at a time | Not official EU position
Tressie McMillan Cottom @tressiemcphd.bsky.social Professor. Sociologist. NYTimes Opinion Columnist. Books: THICK, LowerEd. Forthcoming: 1)Black Mothering & Daughtering and 2)Mama Bears.
Beliefs: C.R.E.A.M. + the internet ruined everything good + bring back shame.
“I’m just here so I don’t get fined.”
Joshua Collins @murosinvisibles.bsky.social Words/photos on Latin America: World Politics Review, Vice, USA Today, the New Humanitarian
+ lots more. Editor: Pirate Wire Services
Sign up for our newsletter: www.piratewireservices.com
THE NERVE @thenerve.news NEW Fearless, independent journalism covering culture, politics and tech
Join us! Sign up for our free twice-weekly newsletter ⬇️
We rely on supporters to fund our work. Please also consider upgrading to membership of the Nerve… 🙏
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No Starch Press @nostarchpress.bsky.social The finest in geek entertainment.
Email us: info@nostarch.com
We're live M-F, 7am-6pm PDT
https://nostarch.com/
Tim Dickinson @timdickinson.bsky.social Senior Writer & Editor, The Contrarian
ContrarianNews.org
Portland, Oregon
Send tips via Signal: TimD.503
Stay connected: TimDickinson.co
Pwnallthethings @pwnallthethings.bsky.social Just thinking out loud.
Barry Dorrans @blowdart.me Security Curmudgeon for Microsoft .NET
Do you really think work wants my social media opinions?
Not nice, but kind - @medus4.com
🇮🇪 🇬🇧 🇺🇸 
Dr Heidy Khlaaf (هايدي خلاف) @heidykhlaaf.bsky.social Climber 🇪🇬 |Chief AI Scientist at @ainowinstitute.bsky.social | Safety engineer (nuclear, defense, software & AI/ML) | TIME 100 AI | MIT 35 U 35
x-Trail of Bits, OpenAI, Microsoft Research
https://www.heidyk.com/
Lia Holland @liaholland.bsky.social 🌲🏳️🌈🧙♀️ 🖋️rep @jwongbaxter.bsky.social | eat & make obsolete at the same time | they/she | opinions=mine
Molly White @molly.wiki writes citationneeded.news • runs @web3isgoinggreat.com and @influence.citationneeded.news • tech researcher and cryptocurrency industry critic • software engineer • wikipedian
support my work: citationneeded.news/signup
links: mollywhite.net/linktree
💗💜💙
Mozilla @mozilla.org Building a better internet.
Daragh Ó Briain @daraghobrien.bsky.social Flumping along in the world of data since Long Ago. Posts as @castlebridge-chief here & on Mastodon at https://mastodon.ie/@CastlebridgeChief CEO @ Castlebridge.ie.
Doctoral candidate at UL looking at #DataGovernance. Author of several books on data stuff.
Tib3rius @tib3rius.bsky.social Web App (mostly) Hacker | Cybersecurity Educator | Content Creator | Ex-Brit | Links: http://linktr.ee/tib3rius (he/him) 🇺🇸 A mostly unserious person. @therealc3rul34n.bsky.social is bae 🥰
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
CyberCanon @cybercanon.org We vet #Cybersecurity books. Our reviews are written by real life experts, heroes, and hackers who led through the biggest exploits.
www.cybercanon.org
Also known as the Cybersecurity Canon Project
Founded: 2013
De Filmende Fietser @filmendefietser.eurosky.social Utrecht 🇳🇱 based fietser | All about Dutch cycling and bike advocacy | Fietsfluencer | Cycling guide | Board member Fietsmaatjes Utrecht 🚲 📹
www.defilmendefietser.nl
Gareth Heyes @garethheyes.co.uk Web security researcher at PortSwigger. Author of JavaScript for Hackers, Shazzer and Hackvertor.
https://garethheyes.co.uk/#latestBook
Peter W🤓 @wang.social Anaconda Founder&Head of AI; created the PyData movement, PyScript, Bokeh, Datashader; Fellow @ Python Software Foundation; Center for Humane Tech
Game~B; Physics, Cybernetics, Memetics. A student of the human condition.
Memento mori
Cynthia Brumfield @metacurity.com DC resident and cybersecurity writer, analyst, book author, publisher. https://metacurity.com/ https://cyberriskbook.com/
https://www.csoonline.com/profile/cynthia-brumfield/ https://infosec.exchange/@metacurity
Send tips to Cynthia.507 via Signal.
Zack Whittaker @zackwhittaker.com Security editor, TechCrunch
Signal: zackwhittaker.1337
My stories: techcrunch.com/author/zack-whittaker
My newsletter/blog: this.weekinsecurity.com
noyb – European Center for Digital Rights @noyb.eu About us 👉 http://noyb.eu
Become a member 👉 http://noyb.eu/support
#MakePrivacyReality #InvestInPrivacy
Brandon @that2000sguy.bsky.social I’ve worked in IT/Cybersecurity for 10+ years. Post mostly about it.
Views are my own.
Love breaking/fixing things, new & old tech, surfing, and 2000s alt-rock.
Check out: verifia.io
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
daniel:// stenberg:// @daniel.haxx.se I write curl. I don't know anything. I am @bagder@mastodon.social
My mastodon posts are mirrored to Blusky here: https://bsky.app/profile/bagder.mastodon.social.ap.brid.gy
Weekly email at https://lists.haxx.se/listinfo/daniel
Soroush Dalili 🍏🍐 @irsdl.bsky.social Hacker (ethical), web appsec specialist, trainer, tools builder & apps breaker, X: @irsdl
https://secproject.com/
https://soroush.me/
https://burpsuite.ninja/
Nicolas Grégoire @agarri.fr Web hacker 😈
Burp Suite Pro trainer 👨🏫
Maintainer of @mastering-burp.agarri.fr 🛠️
LiveOverflow 🔴 @liveoverflow.bsky.social wannabe hacker... he/him
🌱 grow your hacking skills https://hextree.io
James Kettle @jameskettle.com Director of Research at @portswigger.net
Also known as albinowax
Portfolio: https://jameskettle.com/
Open Source Initiative @opensource.org The steward of the Open Source Definition, the foundation of the modern software ecosystem. We build a world where the freedoms and opportunities of Open Source software can be enjoyed by all. #OpenSource
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
Wolfie Christl @wchr.bsky.social Public-interest researcher at Cracked Labs | Research fellow at Citizen Lab | Vienna, Austria | Tech and society. Tracking, surveillance, data economy, platform power, algorithmic decisions, datafication of work.
wolfie.crackedlabs.org/en
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
@infosec.bsky.social @infosec.bsky.social 
InfoSec 🇫🇷 @infosecfr.skyfleet.blue Flux d'info sur la cybersecurité, infosec
🇺🇸 @infosec.skyfleet.blue
🆘 @skyfleet.blue
InfoSec @infosec.skyfleet.blue Relay Tracking News & Blogs about infosec, cybersec
- source removal/addition suggestions welcome !
CVE : check out @cve.skyfleet.blue
🆘 @skyfleet.blue
Myrtus @malwareindepth.com Malware Researcher | Developer | @Cryptolaemus1
| @NVIDIA
Will happily talk about malware with anyone.
Malware Unicorn @malwareunicorn.bsky.social @Straiker. Ex-Microsoft. Ex-Meta RedTeam, Ex-Endgame, Ex Fireeye. malwareunicorn.org
ChiefGyk3D @chiefgyk3d.com #Cybersecurity and #InfoSec by Trade and content creator by night for #Tech, Cybersecurity, #IT, #Linux, #AmateurRadio, and #GamingonLinux
Twitch | YouTube | TikTok | Mastodon
CISSP
Socials and Tipping: https://links.chiefgyk3d.com/socials
#OpenSource
Valdemar Balle @valdemarballe.bsky.social Dedicated to OSINT, SOCMINT & vHUMINT | MSc Data Science Stud. | BSc Sociologist | Founder of Darksight Analytics | Co-founder of OSINord | Paliscope Ambassador | OSINT Blogger
Cyber Space @cyberspacex.bsky.social cybersecurity, infosec, osint, threat intel, memetic warfare, advanced persistence stalker...
Digital Trails Academy @d1g1taltrails.bsky.social Your guide to digital investigations #OSINT #SOCMINT #HUMINT
🔗 digital-trails.academy
Emma Hoes @emmahoes.bsky.social Political Scientist & Experimentalist | 🔍(Political) News, (Mis)information | Social Media | Trust & Skepticism | AI | (Field) Experiments🔬
University of Zurich, Department of Political Science
💻 www.emmahoes.com
Fil Menczer @fil.bsky.social Researcher on social media misinformation and manipulation, director of the Observatory on Social Media (OSoMe.iu.edu, pronounced “awesome”) at Indiana University
emma best 🏳️🌈🏴☠️🏳️⚧️ Mxy @emma.best Journalist, historian, and whistleblower. Leaking at @DDoSecrets.org. Бáба-Ягá Antifa. (she/they)
Wife of @brazenqueer.bsky.social
Follow me on Mastodon https://kolektiva.social/@Mxy
P.S. Abolish ICE
Dr. Dan Lomas @sandbaggerone.bsky.social Assistant Professor, University of Nottingham. Writes on 🇬🇧 intelligence.
Remains an opinionated Northerner & Mancunian. ✍ Vetting, 'Friends' & UK intelligence 📚 🇺🇦 Views my own.
🔗 https://www.nottingham.ac.uk/politics/people/daniel.lomas
Dr. Bilyana Lilly 🦋🌻 @bilyanalilly.bsky.social Author of “Russian Information Warfare” | Cyber chair, WSF | Randite | Oxonian | Bear huntress
Ninja Owl @ninjaowl.ai Ninja Owl specialises in Proactive Cyber & Privacy Security.
📰: This is our auto news feed to keep you up-to-date and aware.
🕸️: https://ninjaowl.ai
#cybersecurity #hacking #news #security #technology #infosec #osint 
Sylvain HAJRI @navlys.bsky.social Passionate about #OSINT.
Founder of epieos.com, a powerful reverse email/phone lookup OSINT tool.
lehack.org #OsintVillage Founder,
osintfr.com co-founder
D:\unk.osint @thetechhouse.bsky.social {your adjective} Yorkshireman. Reads books and learns things. Threat Intel bod. Likes OSINT and radios. Did some SANS courses once. Prefers animals to people. Occasional shitposting.
0x786d @0x786d.bsky.social Pentesting, malware analysis, threat hunting & intelligence, OSINT, AI & ML
Christo Buschek @christobuschek.net Data, computations and investigations | Pulitzer Prize 2021 | Der SPIEGEL | Mozilla Senior Fellow 2025 | https://christobuschek.net | christo.buschek@proton.me
Alexanders @frenchie-osint.bsky.social CCI, OSINT, Threat Intelligence, Investigations; Got on my dead man's suit and my smilin' skull ring
Research lead at Cyble
Talks about Hacktivism and OSINT
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
Jeremy Kirk @jkirk.bsky.social Okta Threat Intelligence. Personal account. Interests: Cyber threat intelligence, OSINT, data breaches, AI. Formerly intel analysis @ Intel 471. jeremykirk.com
Cybintelligence @cybintelligence.bsky.social OSINT, cybercrime, darknet and a lot of other things not cyberz related
Scott Mendelson @scottmendelson.bsky.social A box office columnist for Puck News, but also head over to The Outside Scoop at Substack for everything else worth reading (box office, reviews, analysis, think pieces, etc.)
https://scottmendelson.substack.com/
OWASP® Foundation @owasp.org We improve the security of apps with community-led open source projects, 260 local chapters, and tens of thousands of members worldwide. Famous for OWASP Top 10
Technopolis.tv @technopolis.tv Husband ▫️ Father of 6 ▫️ Cypherpunk ▫️ Hacker ▫️ Blogger ▫️ (Embedded) Programmer
Advanced journeys into digital madness!
https://www.technopolis.tv
#Arduino #ESP32 #STM32 #LoRa #Linux
SANS.edu Internet Storm Center @sansisc.bsky.social http://isc.sans.edu - Global Network Security Information Sharing Community - Daily blogs and cyber security news podcast.
Open Source Security, Inc. @opensrcsec.bsky.social Open Source Security Inc.
Creators of @grsecurity®
Layer 8 Conference and Podcast @layer8conference.com June 14th, Boston
5th Layer 8 Conference
#OSINT #SocialEngineering
https://layer8conference.com 
Neal @nealysart.bsky.social I listen to music a lot, I ride motorcycles and I investigate cyber & financial crime, corruption and other wrongdoings.
🇵🇭 🏴
MacNeal-LCB & Partners
https://macneal-lcb.com/
The Coalition of Cyber Investigators
https://www.coalitioncyber.com
The Centre for Investigative Journalism @tcij.org We provide world-class investigative training and promote investigative journalism worldwide. https://linktr.ee/cijournalismuk
Investigator515 @investigator515.bsky.social Investigator turned OSINT Analyst | Author | Follow for #OSINT #Defense #Infosec | Memes | NAFO ✅ | Ukraine ✅ | Disinformation 🚫 | investigator515.substack.com | 🐕🦺 > 🐈 | 🐧 > 🪟 and always, 🍍 on 🍕
OSINTgeek @osintgeek.de Erlerne Ermitteln. Herstellerunabhängige Schulungen zu Open Source Intelligence und digitalen Ermittlungen.
https://linktr.ee/osintgeek
Paul Wright @londoncity325.bsky.social With over 30 years of experience, Paul has developed notable expertise in cybercrime, intelligence (OSINT and HUMINT) and digital forensics
OSINT Switzerland @osintswitzerland.bsky.social An association for experts, practitioners, and learners with the shared goal of developing and expanding their knowledge of open-source intelligence techniques.
https://osintswitzerland.ch/
OSINT Amy @osintamy.bsky.social OSINT pro. CFE. Data & digital privacy pro. Google dorker. Librarian. Instructor. Amateur historian. Former USG & private due diligence analyst/leader/instructor.
0sintSir🕵🏻♂️ @0sintsir.bsky.social Founder @ OSINord.com | Lead, Cyber Threat Intelligence @ LEGO | ex- @ Rapid7 | Blogger | Navy Veteran | OSINT Addict.
OSINord @osinord.bsky.social The Nordic OSINT Community
Stéphane Koch @stephanekoch.bsky.social Trainer, advisor and lecturer in the areas of information technology, communication, reputation and infosec . Vice President of ImmuniWeb SA.
https://linkedin.com/in/stephanekoch
Dark Web Informer @darkwebinformer.com Providing Cyber Threat Intelligence from the Dark Web & Clearnet: Breaches, Ransomware, Darknet Markets, Threat Alerts, Crypto & more. https://darkwebinformer.com/socials // https://x.com/DarkWebInformer // THIS ACCOUNT IS IN PARK. PLEASE FOLLOW ELSEWHERE.
Mr. Cl0wn (a.k.a GoogleINURL) @mrcl0wnlab.bsky.social Cybersecurity researcher specialized in GED (Gambiarra, Exploit and Development )
Member of github.com/OSINTBrazuca
- Blog: https://blog.mrcl0wn.com / github.com/MrCl0wnLab (current)
- Blog: https://blog.inurl.com.br / github.com/googleinurl (old)
Bashinho - Sohn der Bash @bashinho.de Youtuber und Blogger für Linux, OSINT, BASH und Open Source. Außerdem: Heavy Metal, Skeptiker, Klimaschutz, Naturschutz, Fairtrade. Im Auto: DLF und Radio Bob
Finde mich: https://bashinho.de/links/
NeedleStack @needlestackpod.bsky.social The OSINT podcast. Tips, tricks and tradecraft for #OSINT and investigations on the surface, deep & #darkweb.
Francesco Poldi @noneprivacy.bsky.social 🔍👀 Senior Open Source Intelligence Developer and Researcher.
🔑👤 Privacy is a Human Right.
Security Cryptography Whatever @scwpod.bsky.social @durumcrustulum.com, @sockpuppet.org, @dadrian.io
“Freewheelin’ dynamic”.
https://securitycryptographywhatever.com
https://podcasts.apple.com/us/podcast/feed/id1578405214
Lakota Man 🪶 @lakotaman.bsky.social Oglala Lakota — Enrolled at Pine Ridge, S.D. — “The earth sings her revolution, she calls brave men and women to her defense.” — The only easy day was yesterday.
Randall Munroe @xkcd.com 
Jane Mayer @janemayer.bsky.social New Yorker writer, author Dark Money, The Dark Side, Strange Justice, Landslide, wife & mom.
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.
Bill Pollock @nostarch.bsky.social No Starch Press Founder and President. Founder and Chair, Hacker Initiative
Fight for the Future @fightforthefuture.org 👊 Battling techno-fascism with our Internet-savvy blend of attention-grabbing activism and mass mobilization.
https://www.fightforthefuture.org/2026
Kevin Ryan @revkevv.bsky.social 🇮🇩 Louth exile in Dublin | 🥷 Dad | ⚠️ Technologist | 🏐 GAA | 🏉 Rugby | 🤘 Music | ☮️ Closet Hippie | 🤞 Optimist...kind of
Tom Stacey @t0xodile.com Security researcher at PortSwigger. You can find all of my write-ups and research at https://thomas.stacey.se.
World Bollard Association™️ @worldbollardassoc.bsky.social The official Bluesky account of the World Bollard Association™️. MERCH STORE - https://worldbollardassociation.team-togs.com/shop/storeorderform.php
Uncle Joe @sydseter.com Co-leader OWASP Cornucopia. If you like what we do for open source, visit our code repository https://github.com/OWASP/cornucopia and give us a star ⭐
🌈 «Difference is of the essence of humanity» 🦄 – John Hume
#appsec #owasp #cornucopia #threatmodeling
Matthew Green @matthewdgreen.bsky.social I teach cryptography at Johns Hopkins. https://blog.cryptographyengineering.com
Carissa Véliz @carissaveliz.bsky.social Associate Professor at the University of Oxford. Author of Prophecy ("Witty and surprising...intelligent" - NYT) and Privacy Is Power (An Economist Book of the Year). TED Speaker. Posts about #privacy, #AIethics, #philosophy, #philtech
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.
Sam Tranum @samtranum.bsky.social Editor, co-founder @dublininquirer.bsky.social.
Talking Sasquach @talkingsasquach.bsky.social An actual Talking Sasquach teaching tech stuff to skids and kids of all ages! Check me out on YouTube!! https://www.youtube.com/@TalkingSasquach
Joe B. - BlindHacker @blindhacker.bsky.social 
Katie Paxton-Fear @insider.phd Dr, apparently. Security Adovcate @semgrep & Hacker. #BugBounty hunter & #infosec YouTuber. APIs & Interlinked OffSec, PhD in AI+Sec @hacknotcrime. she/her