ChrisO_wiki @chriso-wiki.bsky.social Independent military history author and researcher. If you find my writings interesting or useful, any tips are appreciated: http://ko-fi.com/chrisowiki 
Ken Shirriff @righto.com Computer history. Reverse-engineering old chips. Restored Apollo Guidance Computer, Alto. Ex-Google, Sun, Msft. So-called boffin.
Hourly Cosmos @hourlycosmos.bsky.social Photo sharing bot for planetary and deep space images.
Run by @kevinmgill.bsky.social
Content providers added with permission.
Anders Johansson @feedersanders76.bsky.social Somewhere stucked between joyful and peachy.
Ransomware.live @ransomware.live Ransomware.live tracks & monitors ransomware groups' victims and their activity. It was created by @Julien.io, a security researcher. The website provides information on Ransomware groups, victims, negotiations, payment demands and much more.
We're just normal men @wejustinnocentmen.bsky.social A weekly reminder that we’re just normal men. Each & every Monday. We’re just innocent men.
Jumped ship to 🦋
https://x.com/wejustnormalmen 👋
Ceasefire now 🇵🇸
Captain Mark Kelly @captmarkkelly.bsky.social Navy combat veteran and retired NASA astronaut. Husband to @GabbyGiffords.bsky.social. United States Senator for the great state of Arizona.
Katie Mack @astrokatie.com Cosmologist, pilot, author, connoisseur of cosmic catastrophes. TEDFellow, CIFAR Azrieli Global Scholar. Domain verified through my personal astrokatie.com website. She/her. Dr.
Personal account; not speaking for employer or anyone else.
Sarah McAnulty, Ph.D. @sarahmackattack.bsky.social Squid biologist
Science communicator
Artist
Philadelphian
I run @SkypeAScientist.bsky.social
Creator of the SquidMobile
https://linktr.ee/Sarahmackattack
Anders Lindberg @anderslindberg.bsky.social Kirunabo, arkivansvarig på LKAB, informationsbefäl i Hemvärnet
Maria Drutska @mariadrutska.bsky.social Thoughts on Rus-Ukr war updates.
I speak fluent sarcasm.
https://linktr.ee/maria.drutska
Blue Team Con @blueteamcon.com Blue Team Con is an annual cybersecurity conference built for defenders, inclusive of anyone interested in safeguarding organizations.
https://blueteamcon.com
Stay Tuned on Blue Team Con 2027!- J Jan Hansson @janhansson.bsky.social
Jonas Gudmundsson @mobrules73.bsky.social 
ISS Piss Tracker @iss-piss-tracker.bsky.social Tracks the level of the piss tank on the International Space Station in real time.
Not affiliated with NASA.
Please don't follow me unless you want your feed filled with percentage changes. (It is not as fun as it sounds)
FAQ thread is pinned.
Katelyn Burns @katelynburns.com Freelance journalist. @ms.now and Xtra Magazine columnist. Co-founder: The Flytrap. Cancel Me, Daddy podcast co-host.
Replies limited to followers only.
Check if my post is a joke before flaming me please.
For story leads, my signal is kab.80
John Wilander @wilander.bsky.social Hacker fiction novelist and WebKit Privacy & Adtech at Apple. Author newsletter and blog: hackerfiction dot net. My latest thriller ”Submerged” was published in 2025.
Dr. Wendy Bohon @drwendyrocks.bsky.social Earthquake geologist 🧪⚒️ | Scicomm specialist 🎙️| Formerly USGS, IRIS, NASA | she/her | Views are mine | website: https://wendybohon.com/
“A delightful blend of scientific rigor and domestic chaos.”
Eliot Higgins @eliothiggins.bsky.social Founder and creative director of Bellingcat and director of Bellingcat Productions BV. Author of We Are Bellingcat.
Justin Russo @flybyknite.bsky.social They let me in the building to watch basketball & write about the Clippers (+ other stuff). It's pretty cool. | Business Inquiries: justinrussowrites@gmail.com
Andrew Parsonson @andrewparsonson.bsky.social I'm on a mission to promote European spaceflight.
Contributor to SpaceNews and Payload.
For queries, email andrewp@europeanspaceflight.com
Herr Flax @herrflax.bsky.social Officer och helikopterpilot. 🦅♟️
(Rensar historiken då och då, och blockar de som inte kan hålla en hövlig ton.)
Sofia ”Greenish” Thulin @soffit.bsky.social Kommer från gamla försvarstwitter. Smyger sig in lite geocaching, svampskog och hunden Ture. @saab och spanar på omvärlden. Täby.
Lilla chipsmamman @missriktad.bsky.social Jahopp
Michael Pettis @michaelpettis.bsky.social Senior Fellow at Carnegie China. For speaking engagements, please write to chinfinpettis@yahoo.com
CJ Åkerberg @cj.khpodden.se Come for the ”upprepade och hätska inläggen” (SvD, 19/5 -21), stay for "stort hjärta och stort patos". Leder Kvalificerat Hemligt (http://khpodden.se). Egna tankar här.
Fredrik Laurin @flaurin.bsky.social https://www.icij.org/journalists/fredrik-laurin/
https://en.wikipedia.org/wiki/Fredrik_Laurin
Oscar Jonsson @oajonsson.bsky.social Russia, modern warfare and old literature.
Nick Frichette @frichetten.com Staff Security Researcher @datadoghq | DEF CON/Black Hat USA main stage speaker | he/him | OSCP OSWE | I turned hacking AWS into a career | Tweets are my own | Created https://hackingthe.cloud
Hacking the Cloud @hackingthe.cloud An open source encyclopedia of offensive security techniques that can be used in cloud environments. Created and maintained by @frichetten.com
Joakim Paasikivi @jpaasikivi.bsky.social Senior geopolitical adviser MSA
Personal account, personal views
George Takei @georgetakei.bsky.social Husband, Actor, Activist, Uncle George to the Internet 🖖
Lukasz Olejnik @lukaszolejnik.bsky.social Security & Privacy. Data Protection. Research & Development. Engineering. Analyst. Policy. W3C. Consultant. Author. King’s College London/War Studies. me@lukaszolejnik.com
lukaszolejnik.com/books
blog.lukaszolejnik.com
techletters.substack.com
6mile @6mile.githax.com Software Supply Chain Red Team. SourceCodeRED & SecureStack founder, dad, startup OG, snowboarder and hacker. Workin on GitHax tool in my spare time. github.com/6mile
@eastsidemccarty from the bird site.
Listifications @listifications.app Follow me to receive notifications via DM whenever you're added to a starter pack, block list, feed or when someone blocks your account.
Follow @unsub.blocks.listifications.app to opt out of direct block notifications.
Aki H Heikkinen @akihheikkinen.bsky.social Mostly in Finglish. Yes, we have few chickens | #fella of sorts | Mainly #russia related | #fuckcancer | RTs, following≠endorsements | @akihheikkinen at X | ❤️ @katiheikkinen.bsky.social
WHY2025 @why2025.bsky.social WHY2025 is an international non-profit outdoor hacker camp/conference taking place in The Netherlands in the summer of 2025.
WHY2025.org
RyotaK @ryotak.net Security researcher?
| Icon: https://twitter.com/MelvilleTw
| Keybase: http://keybase.io/ryotak
| Threads: http://threads.net/ryotkak
| Misskey: http://misskey.io/@ryotak
Mats Svensson @skanesurvival.bsky.social Författare till thrillerböckerna Den trettonde bomben, De tolv majestäterna, Det elfte budet, Det tionde attentatet och Det nionde helvetet. Civilingenjör D från LTH. Lantis.
Anton Gerashchenko @antongerashchenko.bsky.social Ukrainian patriot. Advisor to Internal Affairs Minister (2021-2023). Support my team of volunteer translators: http://patreon.com/TwitterAG
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)
Svante @rickititic.bsky.social 
GeoConfirmed @geoconfirmed.org Map and Investigations = https://geoconfirmed.org/
Managed by volunteers.
You can help us: http://buymeacoffee.com/geoconfirmed
Ars Technica @arstechnica.com Original news, reviews, analysis of tech trends, and expert advice on the most fundamental aspects of tech.
TechCrunch @techcrunch.com Technology news and analysis with a focus on founders and startup teams.
Got a tip? http://techcrunch.com/tips
OSINT Techniques @osinttechniques.bsky.social https://www.forensicosint.com/
MIT Technology Review @technologyreview.com Our in depth reporting on innovation reveals and explains what’s happening now to help you know what’s coming next.
Find our journalists on Bluesky: https://bsky.app/starter-pack/technologyreview.com/3lar7fofuwl2n
Matthew Green @matthewdgreen.bsky.social I teach cryptography at Johns Hopkins. https://blog.cryptographyengineering.com
The Wayback Machine @waybackmachine.bsky.social The Wayback Machine is a service of the Internet Archive that allows people to visit archived versions of Web sites.
Jason Scott @textfiles.com Free-Range Archivist at the Internet Archive. TEXTFILES.COM guy. Documentary and Podcast creator. Troublemaker.
The Way Computers Were @computerswere.bsky.social Skeeting retro computer culture 
Retro Computers @retrocomps.bsky.social Semi-automated posting of old computers and videogames. Sometimes other bits of retro aesthetics and design. ~6-8 posts a day, ~24 posts on holidays.
⚠Outbound links tagged and monitored by Bluesky.
Internet Archive @archive.org Internet Archive is a non-profit research library preserving web pages, books, movies & audio for public access. Explore web history via the Wayback Machine. 
Richard MacManus @ricmac.org Head of Editorial at Latent Space, a leading AI engineering publication · Internet historian at cybercultural.com · Founded ReadWriteWeb (2003–2012) · 🥝 in 🇬🇧
Classic Web: https://bsky.app/profile/classicweb.site
Leaflet: https://ricmac.leaflet.pub
Jakoby @iamjakoby.bsky.social 
STÖK @stokfredrik.bsky.social Hacker / Creative
Mischief & GOOD VIBES ONLY
hakluke @hakluke.com Dad, hacker, solo founder of haksec.com and hackercontent.com.
Louis Nyffenegger @snyff.pentesterlab.com Founder/CEO/Trainer/Researcher/CVE archeologist
@PentesterLab. Security engineer. Bugs are my own, not of my employer...
Rich Mogull @rmogull.com Cloud security, hacker, run/bike/drown, TK11940 in the 501st, itinerant disaster paramedic, private pilot, and other stuff. @rmogull on Signal
Chief Analyst at CSA. CEO of Securosis. Both totally made up titles.
https://slaw.securosis.com
Netsec Explained @gtklondike.bsky.social Netsec Explained is a passion project; dedicated to the research, learning, and sharing of intermediate and advanced level network security topics.
https://www.youtube.com/c/NetsecExplained
Gynvael Coldwind @gynvael.bsky.social Security researcher/programmer ⁂ Managing director @ HexArcana ⁂ @DragonSectorCTF founder ⁂ he/him
stacksmashing @stacksmashing.bsky.social Security researcher with a focus on hardware & firmware. I occasionally publish stuff on YouTube. Co-founder of
hextree.io. Contact: contact@stacksmashing.net
LiveOverflow 🔴 @liveoverflow.bsky.social wannabe hacker... he/him
🌱 grow your hacking skills https://hextree.io
ᴅᴀɴɪᴇʟ ᴍɪᴇꜱꜱʟᴇʀ @danielmiessler.bsky.social AI / Security Researcher and Entrepreneur.
Founder/CEO of Unsupervised Learning.
Building AI that upgrades humans.
omgmike @mikecherry.bsky.social “A riot is the language of the unheard.”
- MLK
Staff ProdSec Engineer @ place
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 
CyberScoop @cyberscoop.bsky.social We report on news and events impacting technology and security. https://linkin.bio/cyberscoop/
AJ Vicens @ajvicens.bsky.social Cybersecurity correspondent at Reuters; former Mother Jones, CyberScoop. Will bore you with skateboarding, UFO lore or Denver Broncos minutiae on request. Signal: ajvicens.57, additional contact methods: https://tinyurl.com/47jc45h7
Ragnar Bjartur Gudmundsson 🇺🇦 @ragnarbjartur.bsky.social My day job involves making sense of data. In my spare time, I apply these skills to Ukraine's fight for freedom.
https://bit.ly/ukrainedashboard
ELINT News @elintnews.bsky.social Independent in-depth coverage & analysis of current geopolitical & geostrategic developments. Proxies & weapons. RT/like/follow/media use≠endorsement.
Defmon3 @defmon3.bsky.social 
John Spencer @spencerguard.bsky.social Chair of Urban Warfare Studies at Modern War Institute & Madison Policy Forum
Author of Connected Soldiers
Understanding Urban Warfare
johnspenceronline.com
Margo Gontar @margogontar.bsky.social Margo from Kyiv | telling you about war Russia threw on us | longer reads: margogontar.substack.com
support my reporting : via paуpal : contributeto762project@gmail.com & https://buymeacoffee.com/margogontar
🎧IT’S SO FCKD UP is out ✨
Mykola Bielieskov @mykolabielieskov.bsky.social Research fellow at National Institute for Strategic Studies under UA President, senior analyst at UA NGO “Come back alive”; all ideas tabled here are private position 
Meanwhile in Ukraine @meanwhileua.bsky.social 🇺🇦 Independent, volunteer-run journalism project from Ukraine.
Fb: fb.com/MeanwhileUA
X: x.com/MeanwhileInUA
Support: patreon.com/MeanwhileinUkraine
bmc.link/meaninuak
https://ko-fi.com/meaninua
paypal.me/meaninua
Mira of Kyiv 🇺🇦 @reshetz.bsky.social 24, ukrainian-american
Print FPV drones like money and we’re hyperinflating
Olga Belogolova 🌻 @olgs7.bsky.social Director, Emerging Tech Initiative at SAIS; Professor at the Alperovitch Institute on disinformation/influence ops. SAIS & BU alum. Former IO Policy Lead at Meta, former journalist at Atlantic Media.
H I Sutton @covertshores.bsky.social Independent Defense Analysis, Unconventional Naval Warfare, author, submarines, #OSINT, illustrations. Mostly typos
http://www.hisutton.com/
Ben Hodges @general-ben.bsky.social Former CG USArmyEurope, loves the Army Team, FSU football, and Braves baseball.
OSINTtechnical @osinttechnical.bsky.social PAI enjoyer, OSINT guy @truth.bsky.social , my views/freezing cold takes are my own. Standard spiel about not endorsing retweets, likes, and comments.
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
Michael Kofman @michaelkofman.bsky.social Senior Fellow, Carnegie Endowment. Defense analysis with a focus on the Russian and Ukrainian militaries.
Molly McKew @mollymckew.bsky.social Writer/lecturer on Russian influence & information warfare | lead writer of greatpower.us | Be excellent to each other
Lawrence Freedman @ldfreedman.bsky.social Emeritus Professor of War Studies King's College London. Latest Book Strategists and Strategy: collected essays, 2014-2024. Substack Comment is Freed https://samf.substack.com/
🦋Special Kherson Cat🐈🇺🇦 @specialkhersoncat.bsky.social 
Timothy Snyder @timothysnyder.bsky.social Temerty Professor of Modern European History, Munk School, University of Toronto; Permanent Fellow, IWM Vienna; Emeritus Levin Professor, Yale. Author of "On Freedom," "On Tyranny," "Our Malady," "Road to Unfreedom," "Black Earth," and "Bloodlands"
Ulrike Franke @rikefranke.bsky.social Senior Fellow at European Council on Foreign Relations. #Drone politics PhD @ox.ac.uk. Teaches at @SciencesPo.bsky.social. Writes about all things #Germany #Defence #miltech. Podcast host at @SicherheitsPod.de & LeCollimateur
The Kyiv Independent @kyivindependent.com Independent English-language journalism in Ukraine
Become a member: kyivindependent.com/membership
Christopher Miller @christopherjm.ft.com Chief Ukraine correspondent for the Financial Times. 16 years living and reporting in Ukraine. https://www.ft.com/christopher-miller
Author of the book, THE WAR CAME TO US, published by Bloomsbury: https://www.amazon.com/dp/139940685X
Illia Ponomarenko @ioponomarenko.bsky.social Live straight out of Bucha 🇺🇦
Pre-order my new book "The Land of Tears and Hope": https://geni.us/tearsandhope
Institute for the Study of War @thestudyofwar.bsky.social ISW is a policy research organization focused on U.S. national security. Email: press@understandingwar.org. For more: https://linktr.ee/understandingwar
Julia Davis @juliadavisnews.bsky.social Columnist @TheDailyBeast, creator of the Russian Media Monitor, sanctioned by Russia.
I watch Russian state TV, so you don't have to.
Author of a book "In Their Own Words: How Russian Propagandists Reveal Putin’s Intentions."
Darth Putin @darthputinkgb.bsky.social Czar for life of all Russians. Master Strategist. Tea connoisseur. Author. Window installer. Wanted in 123 countries. Parody, apparently.
Runa Sandvik @runasand.bsky.social Founder of Granitt, securing journalists and at-risk people around the world. 
John Scott-Railton @jsrailton.bsky.social Chasing digital badness. Senior Researcher at Citizen Lab, but words here are mine.
Danny Moore @moore.bsky.social Cyber-warfare | PhD from KCL | Author of 'Offensive Cyber Operations' | Security @ Meta 
Bill Marczak @billmarczak.org senior researcher at @citizenlab.ca
David Agranovich @dagrano.bsky.social Fmr. NSC Director, Intelligence. Director, Threat Disruption @ Meta. Rescue Dog Pilot, Flight Instructor, Former Big Hair Practitioner 🏳️🌈
Shane Huntley @shanehuntley.bsky.social Aussie security / tech guy.
Google Threat Intelligence. Co-founder Threat Analysis Group (TAG). Tweets are my own not my employers.