Lenny Zeltser @lennyzeltser.com Builder of security products and programs. Teacher of those who run them.
https://zeltser.com
Eric Capuano @eric.zip - Dad of two <3
- Co-founder Recon InfoSec
- SANS DFIR Instructor
- BlackHat Trainer
- IANS Faculty
- Trainer @digitaldefenseinstitute.com
- Blog: https://blog.ecapuano.com
- ⬡ ODESZA, Lane 8, Kasbo 🎧
- ❤ @whit.zip
David DiMolfetta @ddimolfetta.bsky.social Nextgov/FCW cybersecurity + intelligence reporter. Tips: ddimolfetta@govexec.com Signal: @ djd.99 X/Twitter: @ddimolfetta
Mark Hertling @markhertling.bsky.social Former soldier. Student of leadership & national security; Professor, author (“If I Don’t Return: A Father’s Wartime Journal”), speaker. Always looking for civility & new adventures.
https://www.markhertling.com
Stiftung Wissenschaft und Politik (SWP) @swp-berlin.org SWP is a Berlin-based research institute advising political decision-makers on foreign and security policy. http://bit.ly/SWP_PrivPol / Netiquette: http://bit.ly/SWP_Net_en
Alexandra Paulus @alexandrapaulus.bsky.social Researcher for cybersecurity + (defense) tech @swp-berlin.org.
Co-Host Cybernation Podcast.
Currently:
- Harnessing biotechnology for national security
- Holding software vendors accountable for insecure software
- mitigating Europe's US tech dependencies
Unusual Whales @unusualwhales.bsky.social Skeet about markets and political corruption
Discord: http://bit.ly/3Bf2pNJ
Links: http://bit.ly/3V8D6Gb
Get $50-$5000 to trade: http://bit.ly/4ayctTD- J Jan ✌️ @jls.bsky.social Director @darcdataresearch.bsky.social
Bosphorus Observer @yoruk.bsky.social Obsessive ship-spotting by the Bosphorus -.-. .-. .. -- . .- / .. ... / ..- -.- .-. .- .. -. . 50501
Defmon3 @defmon3.bsky.social 
Emma Smith @ameliairheart.bsky.social 🏳️⚧️ she/her
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.
Aric Toler @aric.bsky.social Visual Investigations at The New York Times
COUPSURE @coupsure.bsky.social Open source and geospatial data | @GeoConfirmed | Worked with @Cen4infoRes & @lemondefr
All Source News @allsourcenews.bsky.social Chief Intelligence Officer of Artorias
I focus on cartel violence in Mexico, Latin American affairs and drug trade/organized crime 🇲🇽🇺🇸
Twitter: @all_source_news
NLwartracker @nlwartracker.bsky.social Tracking usage/capture/destruction of weapon systems in #Ukraine theater of operations. Sharing combat footage and more follow @nlwartracker to keep up-to-date!
DefenceGeek @defencegeek.bsky.social Jon.
military & geo-political news. Views my own.
Former Producer & Host @TheOsintBunker Podcast.
Senior Editor with @UKDefJournal.
Used to have 32.2K followers on Twitter/X.
Casus Belli @casusbelli.bsky.social Slightly French Analyst | #OSINT #IMINT and monitoring | Mostly Africa and ex-USSR | RT ≠ endorsement
Air Intel @airintel.bsky.social Covering military & conflict related news. Aircraft & ship tracking. Aviation Photographer
Faytuks News Δ @faytuks.bsky.social Fast & reliable news provider || Covering geopolitical incidents as they happen 🌍 BNONews collaborator. Want to support the channel? ko-fi.com/faytuks
Evergreen Intel @vcdgf555.bsky.social OSINT, geolocations, air/sea data. Snarky AvGeek.
Cites: NYT, Мілітарний, Newsweek, The Aviationist, TWZ, A&SF Mag
"Sharp-eyed aviation buff & flight tracker" ~ Brian Williams
https://buymeacoffee.com/vcdgf555
She/her
Aurora Intel @auroraintel.bsky.social @auroraintel from Twitter. 
MarQs__ @marqs.bsky.social 
Thord Are Iversen @thelookout.bsky.social Military and defense issues, as seen from NATOs northern flank.
Special interest: The Russian Navy.
Independent Defense Analyst, all analysis and opinions are my own
@kylejglen.bsky.social @kylejglen.bsky.social 
Oz Katerji @ozkaterji.bsky.social Ukraine correspondent. British-Lebanese conflict journalist & filmmaker. Director of The Battle For Kyiv. Interested in human rights. RTs ≠ endorsement.
https://ko-fi.com/ozkaterji
Michael Kofman @michaelkofman.bsky.social Senior Fellow, Carnegie Endowment. Defense analysis with a focus on the Russian and Ukrainian militaries.
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
Eliot Higgins @eliothiggins.bsky.social Founder and creative director of Bellingcat and director of Bellingcat Productions BV. Author of We Are Bellingcat.
GeoConfirmed @geoconfirmed.org Map and Investigations = https://geoconfirmed.org/
Managed by volunteers.
You can help us: http://buymeacoffee.com/geoconfirmed
H I Sutton @covertshores.bsky.social Independent Defense Analysis, Unconventional Naval Warfare, author, submarines, #OSINT, illustrations. Mostly typos
http://www.hisutton.com/
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 
Michael Bond @michaelbond.bsky.social 
Emanuel (Mannie) Fabian @manniefabian.bsky.social Times Of Israel military correspondent | BGU alum | hmu: mannie@timesofisrael.com | http://mann.ie
Black Bird Group @blackbirdgroup.bsky.social @Black_BirdGroup
Finnish OSINT group. Currently following the Russian invasion of Ukraine.
Don't DM, Email us:
contact@blackbirdgroup.fi
Map:
https://tinyurl.com/BlackbirdMap
Our site:
https://blackbirdgroup.fi/
Andrew Perpetua @andrewperpetua.bsky.social If you think I deserve a tip: http://paypal.me/ukrdailyupdate
to view my map: http://map.ukrdailyupdate.com
Christian Montessori @montessori.bsky.social Founder and CEO of Artorias. Intel analyst turned tech entrepreneur.
Intel Night OWL 🦉🇺🇸 @intelnightowl.bsky.social RePost ≠ endorsements | OpenSource RnD | OSINT COMINT SIGINT CYBINT ELINT GEOINT ADINT MetaData | ADSB AIS SAT | SDR IoT Arduino Linux | COFFEE
🔥 Follow OSINT Starters 🔥
go.bsky.app/TSvKc6o
go.bsky.app/NKZeoR9
go.bsky.app/PzSSWrC
WarTranslated (Dmitri) @wartranslated.bsky.social 🇪🇪 Estonian blogger focusing on Russia/Ukraine | 18+ version: https://t.me/wartranslated | Glory to #Ukraine!
Vatnik Soup @vatniksoup.bsky.social Fighting Disinformation since 2022.
All soups: https://vatniksoup.com/
Debunk of the Day: https://vatniksoup.com/en/topics/debunk-of-the-day/
Why we soup: https://vatniksoup.com/en/soups/vs2/
Support our work: https://vatniksoup.com/en/support-our-work/
Alison Killing @alisonkilling.bsky.social Visual investigations at the FT. Architect who won a Pulitzer. 
Brady Africk @bradyafr.bsky.social Data, maps, and satellite imagery 🛰🌻🔭
viewsfromabove.bradyafrick.com
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
Emil Kastehelmi @emilkastehelmi.bsky.social Military analyst, military history expert. Co-founder of Black Bird Group. Focusing on Ukraine, Russia and northern Europe.
Contact:
+358 407388158
emil.kastehelmi@gmail.com
Ukraine Control Map @uacontrolmap.bsky.social Ukraine Control Map at http://uacontrolmap.com showing geolocations, frontlines, and unit positions during the war. DM for contact / media
TopCargo200 @topcargo200.com Tracking 🇷🇺 Russian senior officer deaths in 🇺🇦 Ukraine since February, 2022. We do not aim to be the first to publish, we work to provide the most comprehensive information available on every officer.
Robbert @robbertt4321.bsky.social Clausewitzian. BRDM-2 hater.
SPRAVDI - Stratcom Centre @stratcomcentre.bsky.social We spread the truth, counter fakes and hostile propaganda, and amplify the voice of society.
Center for Strategic Communications - SPRAVDI.
GMI @global-mil-info.bsky.social Diligently curating and verifying information from diverse sources to ensure accuracy and objectivity.
Evan Hill @evanhill.bsky.social Washington Post investigations reporter
Co-host of Schlock and Awe: https://schlockandawe.substack.com/
Executive Council, Washington-Baltimore News Guild
Anders Puck Nielsen @anderspucknielsen.dk Military analyst, naval officer, based in Denmark, mostly #Russia and the war in #Ukraine.
YouTube: https://youtube.com/@anderspuck
Newsletter: https://www.logicofwar.com
Author of The Logic of War: https://a.co/d/01Ep6RtI
Tatarigami @tatarigami.bsky.social Former UA officer
Founder of the Frontelligence Insight: https://frontelligence.substack.com
To support my work: http://buymeacoffee.com/frontelligence
Mick - ميك @analystmick.bsky.social Consultant specialised in MENA geopolitics and SALW/Munitions worldwide. Researcher at Armament Research Services (ARES), Jane's contributor. 🇪🇺/🇩🇪
@Jrt_191 @jrtunderscore191.bsky.social I do military map making and map making accessories, miscellaneous OSINT. Student studying national security and international affairs. Australian-American. @Jrt_191 on twitter. Supporter of Ukraine. Слава Україні, Героям слава He/him
Kyruer @kyruer.bsky.social IR graduate, focused on insurgent groups in Syria and in the Sahel.
@modostech.bsky.social @modostech.bsky.social 
@garygnutter.bsky.social @garygnutter.bsky.social Farmer, working on IT.
auonsson @auonsson.bsky.social Every system is a sensor if you hold it right.
Main arena, Baltics. 🇸🇪
mastodon.world/@auonsson , x.com/auonsson backup 🇸🇪
Heather Adkins @argv.bsky.social VP Security at Google. Co-Chair Cybersafety Review Board, Co-Author Building Secure and Reliable Systems. r00t. Medieval historian.
Sarah McLaughlin @sarahemclaugh.bsky.social Global Expression, FIRE. Book: Authoritarians in the Academy, @hopkinspress.bsky.social (August 2025). https://www.press.jhu.edu/books/title/53835/authoritarians-academy
Signal: sarahemclaugh.01. Go birds.
Bart Thijssen @bartthijssen.bsky.social Master of (Keeping/Stealing) your Secrets | Security Advisor & Intel Analyst | Civil Servant @ BE | Klopjacht-speurder | IT Eng. + Pol. Sci. | Posts my own
National Security Archive @nsarchive.bsky.social An independent research institution that advocates for open government and uses FOIA to collect and publish declassified documents - https://nsarchive.gwu.edu - instagram.com/natsecarchive - tiktok.com/@natsecarchive
Brian Tyler Cohen @briantylercohen.bsky.social Political commentary. Over 3 billion views on YouTube. #1 NYT bestselling author. Past: MSNBC
https://linktr.ee/briantylercohen
Dakota @dakotaindc.bsky.social China-Focused Consultant @SentinelOne | Nonresident Fellow @ACGlobalChina | Adjunct @Georgetown | Unprofessional Cook | ❤️💜💙
https://linktr.ee/dakotaindc
Gen Michael Hayden @genmhayden.bsky.social Personal account. Retired USAF, former Director of CIA & NSA, author, husband, father, granddad. Views are my own. Retweets are not endorsements.
Bill Kristol @billkristolbulwark.bsky.social Editor at large, The Bulwark.
Director, Defending Democracy Together.
Host, Conversations with Bill Kristol.
Never Trump.
Rym Momtaz ريم ممتاز @rmomtaz.bsky.social 🇱🇧&🇺🇸(Paris-based) Editor-in-chief Strategic Europe, Carnegie Europe.
Ex-IISS on Eastern Mediterranean.
Ex-Politico on Macron.
Ex-ABC News on Syria/Iraq/Lebanon/Israel.
Multiple Emmy winner.
Azeria @azeria-labs.com Founder of Azeria Labs, Trainer, Author of Blue Fox: Arm Assembly Internals & Reverse Engineering
Ciaran Martin @ciaranm.bsky.social prostrate at the feet of the machine gods
Hexadecim8 @hexadecim8.com Author | spooky trans athlete | Linux behavioral threat researcher | never hacked nobody
https://hexadecim8.com
Marcus Hutchins @malwaretech.com threads.com/@malwaretech
https://linkedin.com/in/malwaretech
https://marcushutchins.com
Allie Mellen @hackerxbella.bsky.social former hacker bringing cyberattacks into the context of today's biggest global events
opinionated human ✨
Micah Lee @micahflee.com Doing what I can to keep activists, journalists, and researchers safe and productive — writing at https://micahflee.com — author of HACKS, LEAKS, AND REVELATIONS https://hacksandleaks.com — signal: micah.01
Theo Baker @tab-delete.bsky.social investigations. george polk award. words in NYT, NYMag, The Atlantic, elsewhere. likes and rts are not endorsements. HOW TO RULE THE WORLD out 5/19 with Penguin Press.
Allison Nixon @nixonnixoff.bsky.social Chief Research Officer @ Unit 221B
most reliable way to reach me is my company's outreach form on the website
my other urls:
https://infosec.exchange/@nixonnixoff
https://www.linkedin.com/in/allison-nixon-81822124/
don't bother contacting me on twitter
Una Hajdari @unawrites.bsky.social Journalist.
Orange Tsai @orange.tw This is 🍊
Dave Aitel @daveaitel.bsky.social 
PortSwigger @portswigger.net We are a leading provider of software and learning on web security. We make Burp Suite and the Web Security Academy.
PortSwigger Research @portswiggerres.bsky.social Web security research from the team at PortSwigger.
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 I’ve grown up right?
John Hammond @johnhammond.bsky.social Hacker. Friend. Cybersecurity Researcher at Huntress.
Alex Plaskett @alexplaskett.bsky.social Security Researcher | Pwn2Own 2018, 2021, 2022, 2024 | Posts about 0day, OS, mobile and embedded security.
Yarden Shafir @yardenshafir.bsky.social A circus artist with a visual studio license
Mark Dowd @mdowd.bsky.social Internet hacker
chompie @chompie.rip hacker, poster, weird machine mechanic
https://chompie.rip
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
Synacktiv @synacktiv.com Offensive security company. Dojo of many ninjas. Red teaming, reverse engineering, vuln research, dev of security tools and incident response.
h0wl @h0wlu.bsky.social 🛡️REDTEAM.PL Co-founder
🦉BlackOwlSec Founder
🧜♀️ WarCon Co-founder
👨🔬Fuzzing
🕵️Web2 & Web3 Security
🪽Angel Investor
OffensiveCon @offensivecon.bsky.social OffensiveCon is a highly technical international security conference focused on offensive security only. Organized by Binary Gecko GmbH.
dragosr @dragostech.bsky.social Autonomous Carbon Based LLM with 42 years of tuning on Information Attack and Defense.
Host of CanSecWest, and PacSec.
Security audits, code, IR, LLM, red team consulting.
Specialize in Firmware, and RF.
VA7MOV
Caitlin Condon @catc0n.bsky.social Adventurer. Takes a lot of photos, calls many places home. VP of research @VulnCheck. Previously vulnerability research director @Rapid7 / @metasploit.
Piotr Bazydło @chudypb.bsky.social Principal Vulnerability Researcher at the watchTowr | Previously: @thezdi | https://chudypb.github.io
Daniel @dansomware.bsky.social threat research @ proofpoint
Tommy Madjar @ffforward.bsky.social Threat Researcher @ Proofpoint. Opinions are my own etc
ONYPHE @onyphe.io Provider of Attack Surface Discovery (ASD), Attack Surface Management (ASM) and CTI solutions. Scanning at Internet-scale since 2017 - contact at onyphe dot io
Patrice <GomoR> Auffret @patriceauffret.bsky.social ONYPHE founder, CEO and CTO - FreeBSD & Perl sculptor rather than GNU/Linux & Python - My views are those of my employer
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