Dick Clarke @racinrapp.bsky.social CEO of Good Harbor Security Risk Management.
Former counterterrorism czar under Presidents Clinton and Bush. First national โcyber czarโ Author of "Warnings" and co-author of "The Fifth Domain" and "Cyber War."
Katelyn ๐
Medusfour @medus4.com Activist, Hacker cosplayer, Artist. Data economy abolitionist.
@cdc_pulpit Sinfluencer, Head of Humanity @ Veilid, designer of weird shirts at hack.xxx
I love gross terrifying things. Because I am one
Thomas Rid @ridt.bsky.social @ridt on X
Joe Uchill @joeuchill.bsky.social Potential game show contestant.
Former Axios, The Hill, Passcode. Founder of the Codebook cybersecurity newsletter. Once got lost in a Starbucks.
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.
GreyNoise @greynoise.io GreyNoise analyzes Internet background noise. Use GreyNoise to remove pointless security alerts, find compromised devices, or identify emerging threats.
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/
Sean Lyngaas @snlyngaas.bsky.social Cybersecurity reporter, CNN. Signal +1-202-355-8471 or SNLyng.11. sean[dot]lyngaas@cnn[dot]com|slyngaas@proton[dot]me
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
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.
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.
Ian Coldwater ๐ง๐ซ @lookitup.baby Kubernetes SIG Security Co-Chair. Minneapolis. They/them. Stay punk ๐ด
MSP feed info: https://bsky.app/profile/amityf.bsky.social/post/3mrv36uo4pc2a
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
MITRE ATT&CK @attack.mitre.org MITRE ATT&CKยฎ - A knowledge base for describing the behavior of adversaries. Replying/Following/Reposting โ endorsement.
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.
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.
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
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
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
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.
Ellen Nakashima @ellenwapo.bsky.social Intelligence and national security reporter at The Washington Post. Reach me securely on Signal at Ellen.626.
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
John Hultquist @hultquist.bsky.social Mandiant Intelligence at Google. CYBERWARCON and SLEUTHCON founder. Johns Hopkins professor. Army vet.
Azeria @azeria-labs.com Founder of Azeria Labs, Trainer, Author of Blue Fox: Arm Assembly Internals & Reverse Engineering
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
Matthew Green @matthewdgreen.bsky.social I teach cryptography at Johns Hopkins. https://blog.cryptographyengineering.com
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.
โ๏ธ Signal: +1 917 257 1382
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
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/
Meredith Whittaker @meredithmeredith.bsky.social President of Signal, Chief Advisor to AI Now Institute 
Patrick Howell OโNeill @patrickhowelloneill.com Journalist at Bloomberg News in DC. Signal: @howelloneill.01, email: patoneill1@bloomberg.net https://www.bloomberg.com/authors/AXb8dLPHBFc/patrick-howell-oneill
Tom Nichols @radiofreetom.bsky.social Staff writer at The Atlantic. Cat guy, Jeopardy champ. New Englander and curmudgeon. Speaker info: https://www.leighbureau.com/speakers/tnichols
Alyssa Miller ๐ฆ๐ฉโโ๏ธ @alyssam-infosec.com Hacker, CISO, and commercial pilot. Certified Bluesky Elder. Author and International Speaker, Chief advocate of #DoBetterBeBetter
Compassion and empathy are traits in short supply but necessary to make this world a better place.
alyssasec.com
Kevin Beaumont @doublepulsar.com cybersecurity weather man. scanning the horizons for cloudy cyber. Expert at nothing except computer rubbish. Anti-ransomware since 2015.
Sean Gallagher @thepacketrat.net Birb stalker. Cat tree. Cyber Threat Researcher. Recovering cyber and natsec reporter. Meme war and US Navy veteran.
@thepacketrat everywhere since 1994. These posts are not my employersโ. https://falling-anvil.com
Jake Williams @malwarejake.bsky.social Breaker of software, responder of incidents, IANS Faculty, VP R&D Hunter Strategy.
Pwnallthethings @pwnallthethings.bsky.social Just thinking out loud.
William Gibson @greatdismal.bsky.social Author of Neuromancer and, most recently, Agency (still above from โKill Switchโ, The X-Files, Season 5, Episode 11, co-written with Tom Maddox)
HD Moore @hdm.io runZero & Metasploit
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 isnโt run by weapons anymore, or energy, or money. Itโs run by little 1s and 0s, little bits of data."
Mark Dowd @mdowd.bsky.social Internet hacker
Alex Stamos @stamos.org CPO/CSO of Corridor.dev, teaching at Stanford.
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
Jennifer Granick @granick.bsky.social Personal account. Former ACLU lawyer. From New Jersey. Living in San Francisco. New College of Florida alum. Newfie owner.
Zack Whittaker @zackwhittaker.com Security editor, TechCrunch
Signal: zackwhittaker.1337
My stories: techcrunch.com/author/zack-whittaker
My newsletter/blog: this.weekinsecurity.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. ๐ณ๏ธโ๐
Katie Moussouris (she/her/she-hulk/she-ra)๐ป @k8em0.bsky.social Founder & CEO LutaSecurity @payequitynow MIT&Harvard visiting scholar, @MasonNatSec fellow, 1/2 Chamoru, 1/2 Greek all-American hacker
DEF CON @defcon.bsky.social The worldโs premier hacker conference. Serving the global hacker community since 1993.
Defcon.org
Forum.defcon.org
Defcon.social
Elizabeth Wharton @lawyerliz.bsky.social Adviser, lawyer, and sometimes cybersecurity circus ringmaster - my monkeys fly.
Bob Gourley @bobgourley.bsky.social Co-Founder & CTO of OODA. Co-host of OODAcast: http://youtube.com/oodaloop
#cybersecurity #artificialintelligence #GPT #Intelligence #ooda #oodaloop
Bob Lord @boblord.bsky.social Cautiously pessimistic, esp. about cyber things.
The owls are not what they seem. ๐ป๐ป๐ฆ๐ฒ๐ชต ๐๐ฅงโ๏ธ๐ฉ ๐ต๐ผโโ๏ธ ๐๐ป
Also: ๐๐๐
And of course: hacklore.org
Other account: @hacklore.bsky.social
Chris Krebs @thekrebscycle.bsky.social Aka @c_c_krebs over there 
Marc Rogers @cjunky.bsky.social Ramblings of a Mad Englishman: Hacker @ BBC's Real Hustle & Mr Robot. Head of Sec @ DEF CON. Founder @ CTI-League, Ransomware Taskforce, w00w00, CDC NSF, (He/Him).
Also
Twitter @marcwrogers
Mastodon cj@chaos.social
Kim Zetter @kimzetter.bsky.social Journalist - cyber/natn'l security. Speaker. Georgetown adjunct prof. Author - COUNTDOWN TO ZERO DAY: Stuxnet and the Launch of the World's First Digital Weapon
Signal: KimZ.42
https://www.zetter-zeroday.com
Matt Devost @devost.net Technologist, entrepreneur, and hacker | CEO @ OODA | Founder @DevSec | Past Founder of FusionX & Terrorism Research Center. Black Hat board member. 
Lily Hay Newman @lhn.bsky.social Security reporter for WIRED Magazine. she/her/my man. Signal +1 (347) 722-1347
Maddie Stone @maddiestone.bsky.social Security Researcher at Google Project Zero. 0-days all day. Love all things reverse engineering. she/her- M Peiter โMudgeโ Zatko @mudge.bsky.social DARPA/Google/Stripe/L0pht/Twitter/โฆ/DARPA/[redacted]
https://en.wikipedia.org/wiki/Peiter_Zatko
Eli Sugarman @elisugarman.bsky.social Personal account. Trust and safety/philanthropy/cyber/tech policy. All views are my own and not those of my employer. Following and re-blueskying(?) =/= endorsement. 
Bridgy Fed for the fediverse @ap.brid.gy Bridgy Fed (https://fed.brid.gy/) bot user for the fediverse. To bridge your account to the fediverse, follow this account.
To ask a fediverse user to bridge their account, send their address (eg @user@instance) to this account in a chat message.
More iโฆ
Danny Weitzner @djweitzner.bsky.social MIT Computer Science and Artificial Intelligence Lab
Founder, MIT Internet Policy Research Initiative
Privacy, Cybersecurity, Free Speech, Surveillance, Computer Science & Law
https://internetpolicy.mit.edu/daniel-weitzner/
Marcus J. Carey ๐ดโโ ๏ธ @marcusjcarey.com ๐ฅ Hope Dealer | ๐ Table Flipper | ๐จ Artist
๐ Tribe of Hackers, US Navy, NSA, DIA, Builder
๐ Hacker | ๐ฃ๏ธ InfoSec, Coding, GenAI
๐ก Simplifying tech, mentoring, building communities
๐ My new books >> Spot the Wolf & Hacker Inc.
๐ Legacy > clout
Woodrow Hartzog @hartzog.bsky.social Andrew R. Randall Professor of Law at Boston University School of Law. Author of "Privacy's Blueprint" (2018) and co-author of "Breached!" (2022). Posting mainly about privacy, tech and the law.
Gary Hayslip @ghayslip.bsky.social CISO @ Softbank Investment Advisers, Hacker, Gamer, Tinkerer, Veteran. Coauthor of CISO Desk Reference, Digital Cat Herder, Drinker of Whisky, ramblings are my own.- D David Etue @djetue.bsky.social Cybersecurity and Intelligence CEO | Builder of things that matter | NSI Fellow | #Intelligence #CyberSecurity | #BBQ | DC Sports Fan
Alex Pinto @alexcp.bsky.social Cybersecurity data storytelling. DBIR at Verizon Business. Previously serial founder and parallel shitposter. He/him.
@gdead.bsky.social @gdead.bsky.social Founder (yikes!), supports @heidishmoo each year as she wrangles @shmoocon, totally done with that other site
Chris Eng @ceng.bsky.social Still deciding if I even like social media any more.
Jay Healey @jayhealey88.bsky.social 
Amรฉlie Koran (webjedi) @webjedi.bsky.social Security Hobo, Itinerant Technologist, Policy Anti-Wonk, Former Senior Fellow at The Atlantic Council, Teller of Tales for Darknet Diaries #91 (and other venues). All opines are my own. RS/Fav/Followโ Endorsement.
Electronic Frontier Foundation @eff.org We're the Electronic Frontier Foundation. We're a nonprofit that fights for your privacy and free speech online. Find all of EFF's social media accounts at eff.org/social.
JoshCorman @joshcorman.bsky.social Philosopher-Strategist-Protectorโฆ more later 
Robert Graham @erratarob.bsky.social @erratarob on the hellscape site
Joseph Menn @joemenn.bsky.social Washington Post alum covering hacking, disinformation and whatโs 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
Paul Guthrie @pguthrie.bsky.social Security practitioner and politics nerd.
Paul Ohm @paulohm.bsky.social Lawprof Georgetown / Emacs and org-mode
Alex Hutton @huttonalexander.bsky.social Opinions here are not my employers or even necessarily my own. I once did risk and data breach things. Hacker Pyramid champ 2017. I once won a Primey.
Ben Rothke @benrothke.bsky.social I do information security, risk management and other tech stuff.
Co-author of new book: The Definitive Guide to PCI DSS Version 4: Documentation, Compliance, and Management.
https://amzn.to/3WhEfh1
Marcus Hutchins @malwaretech.com threads.com/@malwaretech
https://linkedin.com/in/malwaretech
https://marcushutchins.com
Deviant Ollam ใ @deviantollam.bsky.social Philadelphian in Cascadia. Vociferous champion for Oxford commas, two spaces after a period, and ellipses. I break into buildings. ๐
"Even if the world were ending tomorrow, I would still plant a tree." ๐ฒ
(he/they)
Runa Sandvik @runasand.bsky.social Founder of Granitt, securing journalists and at-risk people around the world. 
Joseph Lorenzo Hall, PhD @josephhall.org Astrophysicist turned advocate; guiding the globe to a safer, stronger Internet. Distinguished Technologist @internetsociety.bsky.social, https://josephhall.org/, (former CDT, NYU, Princeton CITP, Berkekey iSchool/Astro)
evacide @evacide.bsky.social Director of Cybersecurity @eff.org
Co-founder of @stopstalkerware.bsky.social
These opinions are my own, not my employersโ
I did a TED talk once
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.
Rob Joyce @rgblights.bsky.social Cyber guy. Former NSA cybersecurity director and chief of TAO. Lover of memes. Warning - occasional outrageous Christmas light content.
Jen @jene.bsky.social 
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.
Kat Duffy @rightsduff.bsky.social Full time: Momlife + working on tech, rights, societal impacts, democracy, foreign affairs. Major enthusiast of biking, bourboning, pie making, home renos, kitchen design, and travel.
Ciaran Martin @ciaranm.bsky.social Cyber War. Huh. What is it good for?
Jacob Ware @jacobware.bsky.social Studying terrorism and extremism. Opinions are my own and RT โ endorsement.
https://bookshop.org/p/books/god-guns-and-sedition-far-right-terrorism-in-america/20097522?ean=9780231211222&next=t
Infosec_james | ICE SUCKS @infosec-james.bsky.social Entrepreneur | Security unprofessional and speaker | Former Navy stuff doer | Advocate for #fostercare | Probably yelling at bots in Russian
Tarah Wheeler @tarah.org CSO of TPO.group โฆ๏ธ EFF Board of Directorsโฆ๏ธshe/her โฆ๏ธ bestselling author but only that one time
SwiftOnSecurity @swiftonsecurity.com computer security person. former helpdesk
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.
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 Iโve grown up right?
Adriana Porter Felt @apf.bsky.social I like writing silly skeets, but that doesn't pay so I also make Google Chrome. mamรก, Eng Director, volunteer at Second Harvest. ๐บ๐ฒ๐จ๐ท
Twitter: @__apf__
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
Bluesky @bsky.app official Bluesky account (check username๐)
Bugs, feature requests, feedback: support@bsky.app