Stephan Wiefling @swiefling.de 🔑 Usable Security (USec) & Authentication Research
💼 USec Consultant @ Vodafone | Adjunct Professor | Past: Meta
🎓 Dr.-Ing. (Ruhr University Bochum) | CISSP
🔗 stephanwiefling.de | Fediverse: social.swiefling.de/@swiefling
Views my own, not my employer’s.
Wes Miller @getwired.com EX-Microsoft - Research analyst at Directions on Microsoft covering identity, security, compliance, management, & Microsoft licensing. Blog: http://getwired.com
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)
Diego Magalhaes @dgomesbr.bsky.social 👩💻Principal Technologist @AWS | 🇨🇦, but working 🌎| Education, Research, and EdTtechs 🎓 | 👨💻Empowerment for social impact via Education and Technology; SaaS Geek
Made of words and movies @hfnuala.bsky.social Irishwoman (she/her) washed up in Edinburgh. Responsible for 1 kid (the other is now an adult!) and an ever growing tbr. Books, cooking, sometimes knitting & crochet.
I may be a flaneuse or I might just be idle.
People talk to me.
Alex Danvers @drdanvers.bsky.social Social Psychologist, Data Scientist, Baseball Fan, Dog Dad, Improviser
Nivi @niviis.bsky.social Views, opinions my own.
Digital @Bloomberg in Ireland.
Scott Galloway @profgalloway.com Professor of Marketing at NYU Stern School of Business, serial entrepreneur, and host of the Prof G and Pivot Podcasts.
quiznos @quiznos.bsky.social Indescribable
Joe Weisenthal @weisenthal.bsky.social Cohost of The Odd Lots Podcast
Singer and guitarist in Light Sweet Crude
Kat Casey @katcasey.bsky.social Site Editor at Informa TechTarget
SearchCloudComputing
☁️ Covering all things cloud ☁️
All opinions posted are my own.
https://www.techtarget.com/searchcloudcomputing/
Aqeel 🦘✨🦕 @aqeelakber.com Exploring the intersection of science, business, tech, and art.
Once a nuclear physicist. Founded and exited an AI company; now building meos labs.
Meos One - your phone made better.. @getmeos.com
Proudly non-binary, expect emojis in replies. 💖🇦🇺🦘
Dean H. Saxe @fullfrontalnerdity.com Identity, security, standards, food & drink, travel, bicycles, backpacking, bikepacking, and board games.
Co-chair, Death & The Digital Estate Community Group (OpenID Foundation).
Utility Nerd @utility-nerd.bsky.social 
@gdead.bsky.social @gdead.bsky.social Founder (yikes!), supports @heidishmoo each year as she wrangles @shmoocon, totally done with that other site
Heidishmoo @heidishmoo.bsky.social Mom, Wife, Friend
Loves 🚴♀️ and🚶♀️, but not 🏃♂️.
Also known for liking 🥃 and 🍫 and 🥓.
Believes that centaurs wear 🪖s. 
Tarah Wheeler @tarah.org CSO of TPO.group ♦️ EFF Board of Directors♦️she/her ♦️ bestselling author but only that one time
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.
Pits @pits666.bsky.social Strayan based nub doing computer stuff, shitposter, Judo/Karate green belt, BJJ white belt, raging against the printers, author of critically panned nerd romance novels and stuff.
Check out #nerdromancewithpits
Planet of the Ang @planetoftheang.bsky.social Finish and a little bit of framing Carpenter. Journeyman Painter/taper. Sign Maker. Mosaic tile/bottlecap installer. Mural painter. Dabble in upholstery,Plumbing, electrical, restaurant design
John Scalzi @scalzi.com I enjoy pie.
Social Media FAQ: https://whatever.scalzi.com/2025/04/16/the-official-john-scalzi-social-media-faq/
Privacy Chap @privacychap.bsky.social Security, Defence, Cybersecurity, Privacy, Politics - areas of interest / active in.
Philippe Vynckier @pvynckier.bsky.social Senior advisor, Security Expert, Cyber Threat Expert
Threat monitoring, security analysis, risk analysis, business continuity planning, disaster recovery planning, vulnerability management, threat assessment, malware, Ransomware and incident response...
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
Steve Redmond @sjredmond.bsky.social IT PRO, X Refugee, Proud TDS & VDS victim, Two Country Family
Willa @willasaywhat.bsky.social Infosec princess with a penchant for secure code, mother of two, wifey ⚢. My words are my own. 🏳️🌈
https://infosec.exchange/@willasaywhat
Alistair Davidson @moh-kohn.eurosky.social For a Scottish Socialist Republic
#AutisticLiberation
https://mohkohn.co.uk
he/him
George Roberts @sirtwi.st Founder, Mod Digital (mod.digital)
Principal Architect, Identity and Access Management @ McDonald’s
Microsoft MVP | CISSP
Blog/Links: twistontech.com
*** Words/opinions are mine. ***
#Azure #Security #Identity #TheDiscords #Acappella #Words5X he/him
Klemens Arro @klemens.bsky.social “hi” 🍁🍃🍂 Just some random stuff 💁♂️🏳️🌈🇪🇪🇪🇺 💼 CEO @ailab.ee, @heysec.com, Board Member at Estonian Human Rights Centre.
🔗 https://klemens.ee
David Ryan @ryangenealogy.bsky.social Historian/genealogist. APG board member. Recently completed MA Public History and Cultural Heritage in University of Limerick. Passionate about heritage, oral history and anything that connects to our past https://ryangenealogicalresearch.com/
Patrick Howell O’Neill @patrickhowelloneill.com Journalist at Bloomberg News in DC. Signal: @howelloneill.01, email: patoneill1@bloomberg.net https://www.bloomberg.com/authors/AXb8dLPHBFc/patrick-howell-oneill
Pwnallthethings @pwnallthethings.bsky.social Just thinking out loud.
SwiftOnSecurity @swiftonsecurity.com computer security person. former helpdesk
Meredith Whittaker @meredithmeredith.bsky.social President of Signal, Chief Advisor to AI Now Institute 
David Buchanan @retr0.id reverse engineering, cryptography, exploits, hardware, file formats, and generally giving computers a hard time
Fedi: @retr0id@retr0.id
Macroblog: https://www.da.vidbuchanan.co.uk/blog/
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.
Joseph Menn @joemenn.bsky.social Washington Post alum covering hacking, disinformation and what’s left of privacy. Author of books on the Cult of the Dead Cow, organized criminal hacking, and Napster. Pulitzer co-finalist 2024. Signal joemenn.01
Dmitri Alperovitch @dmitri.silverado.org Geopolitics, Russia, China, Cyber
Chairman @silverado.org
Author of WorldOnTheBrink.com
Host GeopoliticsDecanted.com podcast
Founder Alperovitch Institute for Cybersecurity Studies at Johns Hopkins SAIS
Co-Founder CrowdStrike
@DAlperovitch elsewhere
the grugq @thegrugq.bsky.social 
Lorenzo Franceschi-Bicchierai @lorenzofb.bsky.social Real-time historian of the late cyber capitalist era @TechCrunch, writing about the intersection of hackers, human rights, and spies.
Also writing a book about Hacking Team and the history of government spyware.
☎️ Signal: +1 917 257 1382
Runa Sandvik @runasand.bsky.social Founder of Granitt, securing journalists and at-risk people around the world. 
Alex Stamos @stamos.org CPO/CSO of Corridor.dev, teaching at Stanford.
Matthew Green @matthewdgreen.bsky.social I teach cryptography at Johns Hopkins. https://blog.cryptographyengineering.com
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. 🏳️🌈
Dustin Volz @dustinvolz.bsky.social Washington correspondent for The New York Times focused on cyber conflict, digital espionage and intelligence. Prior stops at WSJ, Reuters, National Journal. https://www.nytimes.com/by/dustin-volz
Azeria @azeria-labs.com Founder of Azeria Labs, Trainer, Author of Blue Fox: Arm Assembly Internals & Reverse Engineering
John Hultquist @hultquist.bsky.social Mandiant Intelligence at Google. CYBERWARCON and SLEUTHCON founder. Johns Hopkins professor. Army vet.
@mikko @mikko.bsky.social Fighting malicious use of technology.
Zack Whittaker @zackwhittaker.com Security editor, TechCrunch
Signal: zackwhittaker.1337
My stories: techcrunch.com/author/zack-whittaker
My newsletter/blog: this.weekinsecurity.com
Eric Geller @ericjgeller.com Senior reporter at @CybersecurityDive.bsky.social covering all things digital security. I also co-host @hothtakes.bsky.social. | Send me tips: https://ericjgeller.com/contact.html
Ellen Nakashima @ellenwapo.bsky.social Intelligence and national security reporter at The Washington Post. Reach me securely on Signal at Ellen.626.
Patrick Gray @patrick.risky.biz https://risky.biz/
J. A. Guerrero-Saade (JAGS) @jags.bsky.social VP of Intelligence and Security Research, Senior Technical Fellow (AI) @ SentinelOne.
Distinguished Fellow and Adj Professor @ Hopkins SAIS Alperovitch Institute. Three Buddy Problem Co-Host. LABScon Founder, Cyber Paleontologist, Fourth-Party Collector.
Mark Dowd @mdowd.bsky.social Internet hacker
Chris Bing @chrisbing.bsky.social Cyber, natsec and foreign affairs. Formers with ProPublica, Reuters and CyberScoop
https://bing-chris.medium.com/how-to-contact-me-d2fd4bd3ed7b
Jason Kikta @kikta.net // Making it up as I go
// JHU SAIS @alperovitch.institute adjunct
// @istorg.bsky.social adjunct sr tech advisor
// Former USCYBERCOM/CNMF
// Retired US Marine Corps
// Personal views and invective
Bill Marczak @billmarczak.org senior researcher at @citizenlab.ca
chompie @chompie.rip hacker, poster, weird machine mechanic
https://chompie.rip
Catalin Cimpanu @campuscodi.risky.biz ☆ Cybersecurity reporter
★ Newsletters at Risky Business
#infosec #cybersecurity
https://risky.biz
Joe Slowik @pylos.co Threat Intel / CTI / OT / ICS / Critical Infra stuff along with other things. I genuinely care, and wish others did too.
Website: pylos.co
Training/Consulting: paralus.co
Horkos @wylienewmark.bsky.social waking up everyday in a full sprint. cyber(punk) & counterintelligence. bloody inertia interspersed with bouts of bloody frenzy. i see kanly today in everything.
#FUZZYSNUGGLYDUCK
opinions are my own.
Łukasz @maldr0id.bsky.social Military-grade reverse engineer @ Google, working on Android malware
Got mistaken for a member of Project Zero once.
Everything here is my own opinion
he/him ✨🌈🦄
gab 🇺🇦🇵🇸 @gabagool.ing fka @gabbyroncone on twitter. mission tech lead for RU & Eastern European APT ops @Google. views expressed here are mine, not my employer’s. she/her.
Tom Uren @tom.risky.biz Author of the Seriously Risky Business cyber security newsletter
Greg Otto @gregotto.bsky.social @gregotto from twitter, now on bluesky. Editor-in-Chief at CyberScoop. Host of Safe Mode. Better with words than I am with code.
MITRE ATT&CK @attack.mitre.org MITRE ATT&CK® - A knowledge base for describing the behavior of adversaries. Replying/Following/Reposting ≠ endorsement.
Selena Larson @selenalarson.bsky.social loves dogs, sports, memes. she/her. podcaster. "bluesky's humblest resident nailfluencer 💅" - Jerry
my heart is in the west 🌵🌊 views mine.
evacide @evacide.bsky.social Director of Cybersecurity @eff.org
Co-founder of @stopstalkerware.bsky.social
These opinions are my own, not my employers’
I did a TED talk once
Max Smeets @maxwsmeets.bsky.social Author of No Shortcuts & Ransom War
Co-director Virtual Routes (https://virtual-routes.org/), previously ECCRI
Managing Editor Binding Hook (https://bindinghook.com)
Senior Researcher, ETH Zurich
Manuel 'HonkHase' Atug @honkhase.de 20yrs Sec @CCC, @GeraffelV @cbase @loadev @AG_KRITIS #hacking #Ethik #KRITIS #Cyberresilienz, working at @HiSolutions http://Threema.id/X9H873XJ
Mastodon: https://chaos.social/@HonkHase
LinkedIn: www.linkedin.com/in/manuel-honkhase-atug-820b27241
Hackers On Planet Earth 🏳️🌈🏳️⚧️ @hope.net HOPE Conference
The New Yorker Hotel
August 14-16, 2026
NY, NY
https://hope.net
Allan “Ransomware Sommelier” Liska @ransomwaresommelier.com Recorded Future - Ransomware Researcher
Owner @greenarcher.io - Yours Truly, Johnny Dollar | The Press Guardian | The Clock | The Green Archer
Weird mix of security, comics, photography and wine!
www.greenarcher.io
Lea Kissner @leak.bsky.social Security, privacy, respect. Was the Twitter CISO until it was terrible. Now LinkedIn CISO. they/them
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.
Whitney Merrill @wbm312.bsky.social I nudge people to care about privacy and security. CPO/DPO. Privacy/infosec lawyer. Hacker. Fighting for privacy, digital civil liberties & the users. Ex @EA @FTC |my views are my own. I used to post on Twitter at @wbm312.
Danny Moore @moore.bsky.social Cyber-warfare | PhD from KCL | Author of 'Offensive Cyber Operations' | Security @ Meta 
Alec Muffett @alecmuffett.bsky.social everybody deserves good security.
https://alecmuffett.com/about
Dan Goodin @dangoodin.bsky.social Cybersecurity Reporter, Ars Technica: https://arstechnica.com/author/dan-goodin/ Hungry for tips. Text me on Signal: DanArs.82. "The world isn’t run by weapons anymore, or energy, or money. It’s run by little 1s and 0s, little bits of data."
Lily Hay Newman @lhn.bsky.social Security reporter for WIRED Magazine. she/her/my man. Signal +1 (347) 722-1347
Glenn @ntkramer.bsky.social Elder Millennial | 💼 Cybersecurity | I ask 'why?' a lot | Pro Oxford Comma | Fix it! | He/Him | #BLM | Views are my own.
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
Taggart @taggart-tech.com @mttaggart@infosec.exchange. Displaced Philly boy. Executive Director of @ifin-intel.org. Threat hunter. Educator. Dad. General in the AI Resistance.
taggartinstitute.org
wtfbins.wtf
linktr.ee/mttaggart
Lou @loustella.com Threat Researcher
NJ->TX->PA
Contains Multitudes.
Bob Lord @boblord.bsky.social Cautiously pessimistic, esp. about cyber things.
The owls are not what they seem. 🗻🗻🦉🌲🪵 🍒🥧☕️🍩 🕵🏼♀️ 👍🏻
Also: 🔐🔑🔒
And of course: hacklore.org
Other account: @hacklore.bsky.social
Daniel Gordon @validhorizon.bsky.social Thought Trailer, Cyber Threat Intel, DFIR. He/Him. Bucketing, sharing, and bacon-saving as a service. https://validhorizon.medium.com/
Dave Wilburn @davemwilburn.bsky.social Recovering infosec engineer, machine learning for infosec, sailor, news junkie, threat intel consumer, deep statist. All opinions are mine. Also see my account on Mastodon/Fediverse, @davemwilburn@infosec.exchange
Ron Bowes @iagox86.bsky.social Staff Product Detection Engineer @ Censys. https://skullsecurity.org
Mostly post about professional stuff, maybe some improv stuff and maybe even magic some day. Seattle-based (originally Canadian), queer, cybersecurity nerd.
(He/him)
Allan @allanfriedman.bsky.social SBOM Champion. Paranoid about supply chains of all kinds. Former full-service technocrat at CISA, NTIA. Lapsed{engineer, academic, author}. Now wandering the world doing acts of infosec-goodness, & occasionally getting paid for it. Poster of food pics.
GreyNoise @greynoise.io GreyNoise analyzes Internet background noise. Use GreyNoise to remove pointless security alerts, find compromised devices, or identify emerging threats.
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
🇮🇪 🇬🇧 🇺🇸 
Matt Burgess (WIRED) @mattburgess1.bsky.social Security writer @wired.com
Cybercrime, privacy, surveillance, and more.
Signal: mattburgess.20 | Email: matt_burgess@wired.com
Matt Blaze @mattblaze.org Scientist, safecracker, etc. McDevitt Professor of Computer Science and Law at Georgetown. So-called expert on election security and a few other things. Slow photographer. RF nerd. Occasionally blogs at https://mattblaze.org/blog
Matthew Garrett @mjg59.eicar-test-file.zip Former biologist. Actual PhD in genetics. Security, OS security teaching at https://www.ischool.berkeley.edu.
Blog: https://codon.org.uk/~mjg59/blog
Signal: @mjg.59
He/him
Opinions expressed here are mine, not my employer's
Rowdy @r0wdy.sk33t.expert electric callboy
SteveD3 (Steve Ragan) @steved3.io Father. Grandpa. Geek. Hacker. Former journalist. Security researcher. CMO @BSidesLV.org Member: Curated Intel 
Andrew Couts @couts.bsky.social Security & Investigations Director at @WIRED.com. Send tips and/or dog pics.
Signal: couts.01
Kevin Collier @kevincollier.bsky.social I cover digital threats for NBC News. Tip me! @kevincollier.01 on signal, kevin.collier@nbcuni.com. NYC, from West Virginia.
Christian Vasquez @chrismvasq.com hi chat, im a US-based freelance journalist covering tech and cyberspace // focus = h4x0rz + infrastructure + policy // priors:
cyberscoop, e&e news, politico
signal: chrismvasq.42
https://tips.hushline.app/to/chrismvasq
Vern McCandlish @malanalysis.bsky.social A #DFIR, #infosec, #dadjokes, #scifi, #books, #rpg, #ttx, #malware, elder #genx, and #gaming nerd. AKA an elder geek. Retired #leo. Retired from #infosec in #OT now too.
Kindness first is useful but telling off toxic folks is on my response spectrum too.
({({(Null Operator)})}) @null0perat0r.bsky.social | 🔐 appsec | 🤓 CTO | ✨ indy hacker | 🎛️ modular synth | 🪳 coder | 🏕️ camping
Developer of Faction: an open source pentesting framework.
https://github.com/factionsecurity/faction
https://bsky.app/profile/factionsecurity.com