Ed Arnold @edrusi.bsky.social European Security at RUSI - NATO, JEF, Arctic and High North security.
All views my own
Tom Uren @tom.risky.biz Author of the Seriously Risky Business cyber security newsletter
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
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
Jan Marian @janmarian.bsky.social Permanent Representative of 🇨🇿 to the UN, OSCE and other International Organizations in Vienna | @CZMissionVienna | Private account, usual caveats apply.
Lewis Sage-Passant @encyclopediageopolitica.com Global Head of Intelligence @ big European corporation, Adjunct Prof in Intelligence at Sciences Po Paris. Author on private intel. Podcasting on dangerous stuff and writing about geopolitics @ EncyclopediaGeopolitica.com
Cybersecurity Dive @cybersecuritydive.bsky.social We provide business journalism into the most impactful news and trends shaping cybersecurity.
Isabella Brunner @brunnerisabella.bsky.social Assistant Prof, Leiden University | International Law & Cyberspace | special focus on the law of state responsibility and evidence | drafted AT Position on Intl Law and Cyber Activities | @thehagueprogram.bsky.social
Dr Brianna Rosen @briannarosen.bsky.social Senior Fellow and Director, AI and Emerging Tech Initiative at Just Security | Senior Research Associate at the University of Oxford | Formerly White House NSC
Website: www.drbriannarosen.com
Politics_Oxford @politicsoxford.bsky.social The Department of Politics and International Relations (DPIR) at the University of Oxford
Monica Kello @monicakello.bsky.social Lecturer in War Studies (Cyber Security) at King's College London. Organising HagueTIX 2025 @haguetix.bsky.social.
Lucas Kello @kellolucas.bsky.social Professor of Technology and Geopolitics, Director of ACE-CSR, Oxford University. Author of “The Virtual Weapon” and “Striking Back.”
https://www.politics.ox.ac.uk/person/lucas-kello
Balázs Gyimesi @balazsgyimesi.bsky.social RUSI Europe Communications Manager
Juliana Suess @julianasuess.bsky.social Researching Space Security with STAND (Strategic Threat Analysis and Nuclear (Dis-)Order) as part of the International Security team at @swp-berlin.org & Host of ‘War in Space’ podcast 🚀 @rusi.bsky.social Associate Fellow | 🎓 War Studies | Views are mine
Christoph Bergs @milavhis.bsky.social Life consists of Air Power and Aircraft.
Founder: Military Aviation History.
Aude Géry @audegery.bsky.social ✒️ Senior researcher - GEODE/French Institute of Geopolitics
International Law, Tech Regulation, Cyberwarfare, Proliferation, IHL, Digital Rights.
Derrick Cogburn @derrickcogburn.bsky.social Scholar. Teacher. Sailor: Full Professor @AmericanU @KogodBiz & @ausis | Director idppglobal.org and internetgovernancelab.org | Data scientist doing #TextAnalysis #NLP using #AI #ML #LLMs #Python #RStats #Positron #HPC #a11y #CSCW #HCI
Andrea Calderaro @andreacalderaro.bsky.social Director @EUCyberDirect at @euiss.bsky.social Working on Transnational Governance of Cyber/CyberDiplomacy. Also @CardiffUni @EUI_EU
Allison Pytlak @apytlak.bsky.social Sr. Fellow & Cyber Program Director @StimsonCenter. Recovered New Yorker, Canadian in DC. Runner, dancer, karaoke legend✌️✨️ Views my own
Internet Policy Review @policyr.bsky.social Journal for internet studies. Interdisciplinary & open access. Published by @hiigberlin.bsky.social & @cais-research.bsky.social in cooperation with @create-glasgow.bsky.social @cis-cnrs.bsky.social IN3 @uocuniversitat.bsky.social & Skytte Institute UT
Oleg Shakirov @shakirov2036.bsky.social I study Russian foreign policy, cyber security, arms control
Rory Cormac @rorycormac.bsky.social Professor: Subversion & Secret Statecraft | Author: Fakers (coming 2026); Disrupt & Deny; How to Stage a Coup; Crown, Cloak, & Dagger
Joanna Syrda @syrda.bsky.social Economist at University of Bath | Her interdisciplinary research spans labour economics, industrial organization, political science, political and social psychology, sociology, sustainability, digital security and privacy.
Arthur Snell @snellarthur.bsky.social Writer, podcaster and former diplomat.
Buy my book👇
https://tr.ee/ElementalBookshopOrg
https://tr.ee/ElementalAmazon
https://tr.ee/ElementalWaterstones
If you don't want to buy my book, you could buy me a coffee👇
https://ko-fi.com/snellarthur
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
Gideon Rachman @gideonrachman.bsky.social FT columnist. Also have podcast. Author of three and a half books. Four kids. Two cats. One wife. Numerous friends. Fulham fan.
Tiffany C. Li @tiffanycli.bsky.social Law professor and writer. Expert on tech, privacy, AI, and sarcasm.
🐦: https://twitter.com/tiffanycli
🧵: https://www.threads.net/@tiffany.c.li
🐘: https://mastodon.social/@tiffanycli
TiffanyLi.com if you insist
Kevin Poireault @leekthehack.bsky.social Tech reporter https://linksta.cc/@kevinpoireault
Justin Bassi @bassijustin.bsky.social 
Ludovica Meacci @ludovicameacci.bsky.social US-EU-China and technology | PhDing at @csds.bsky.social | Associate Fellow at @rusi.bsky.social | usual caveats apply
Elke Schwarz @elkeschwarz.bsky.social Professor of Political Theory. Technology, politics, ethics and war are my main preoccupations. Lately also the Apocalypse.
Kathryn Westmore @kathrynwestmore.bsky.social Senior Associate Fellow, Centre for Finance and Security @ RUSI // Financial crime policy + regulation // Views are my own.
Dani Prieto @danielleprieto.bsky.social Programme Lead @rusinextgen.bsky.social. Membership Manager @rusi.bsky.social. Birkbeck Human Rights LLM. Interested in Middle East, LATAM & Africa issues. Views are my own.
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
Tomas Lamanauskas @tlamanauskas.bsky.social Deputy Secretary-General of the International Telecommunication Union
Peter Jones @peterjonesuk.bsky.social Vice Chair, MAG International. Head of Global Strategies, LSE IDEAS. Distinguished Fellow, Royal United Services Institute. Chair, British Italian Society.
Matthew Redhead @matthewrr.bsky.social National & financial security. Former UK civil servant and financial intelligence professional. Senior Associate Fellow @rusi.bsky.social CFS. Loves ideas, cult fiction, anomalous stuff, landscapes and sanity.
Views own.
RUSI NextGen @rusinextgen.bsky.social 💡 Connecting the next generation of leaders and thinkers.
https://linktr.ee/rusinextgen
Oana Lungescu @oanalungescu.bsky.social Longest-serving & 1st woman #NATO Spokesperson (2010-2023), Distinguished Fellow at the Royal United Services Institute, ex #BBC correspondent
Danny Palmer @dannypalmer.bsky.social Freelance cybersecurity journalist & writer. Welsh. SE London.
Also likely to post about games, rugby, F1, wrestling & the cat.
I have a Simpsons reference for every occasion.
Els De Busser @elsdebusser.bsky.social Associate Professor Information Law | Institute for Information Law (IViR) | University of Amsterdam
Unesco expert AI & Rule of Law
Board of Directors Siracusa Institute for Criminal Justice & Human Rights
Tech | Human Rights | Data Protection
Justin Bronk @justin-br0nk.bsky.social Senior Research Fellow for Airpower and Military Technology at RUSI, London. Associate Professor II at the Royal Norwegian Air Force Academy. Pilot. Views are my own.
RUSI biography and publications: https://t.co/wgeOUvRQdO
Wilhelm Vosse @vosse.bsky.social Professor for international relations and security studies at ICU, Tokyo, Japan.
Research on cybersecurity and cyberdiplomacy in Japan and Europe
Jessica White @jwhite692.bsky.social Research: gender, CT, security; @RUSI Terrorism and Conflict Research Group, @ExtremismGaming, prior US Navy; views my own, RT ≠ endorsement; she/her
Ulrike Franke @rikefranke.eu 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
Michael Stephens @mikerstephens.bsky.social Senior Fellow @FPRI Senior Associate Fellow @RUSI_Org, @RANDEurope, Views my own, RTs not endorsements....Fulham FC
@piahuesch.bsky.social @piahuesch.bsky.social Research Fellow for Cyber, Technology and National Security at RUSI.
Working on UK dual use innovation, cyber and tech policy. 
Duncan Hollis @duncanhollis.bsky.social Laura H. Carnell Prof. of Law, Temple University; Non-Resident Scholar, Carnegie
I study treaties, international organizations, and how to regulate state behavior in cyberspace (not always in that order)
Council on Geostrategy @congeostrategy.bsky.social Dedicated to making Britain and other open nations stronger and greener. Co-founders: James Rogers and Viktorija Starych-Samuolienė
💻 https://www.geostrategy.org.uk/
📩 https://councilongeostrategy.substack.com/subscribe
Aaron Brantly @afterwestphalia.bsky.social Assoc Professor, Virginia Tech Dept. of Political Science; Director - Tech4Humanity Lab (http://tech4humanitylab.org) Former #UARPCV Kivsharivka 🇺🇦 Head of Research, Center for European Union and Transatlantic Studies at Virginia Tech. Opinions are my own.
Patrick Gray @patrick.risky.biz https://risky.biz/
Gil Baram @gil-baram.bsky.social www.gilbaram.com
Catalin Cimpanu @campuscodi.risky.biz ☆ Cybersecurity reporter
★ Newsletters at Risky Business
#infosec #cybersecurity
https://risky.biz
Tanya Tropina @gap-the-mind.bsky.social Snr Advisor, Institutional Relations at Internet Society. Previous: ISGA, Leiden Uni & Max Planck Institute for Foreign and International Criminal Law. Lawyer ⚖ Nomad ✈ Tango addict ♫ Personal views only.
Eugenia Lostri @eugenia.bsky.social 
Noran Fouad @noranfouad.bsky.social Senior Lecturer in Digital Politics @Manchester Metropolitan University | Associate Fellow @RUSI | Ex @University of Oxford | PhD from @University of Sussex | Cybersecurity, Critical Security Studies, International Relations
Joyce Hakmeh @joycehakmeh.bsky.social Deputy Director, International Security, Chatham House
Co-Editor, Journal of Cyber Policy
derek guy @dieworkwear.bsky.social Menswear writer. Editor at Put This On. Words at The New York Times, The Washington Post, The Financial Times, Esquire, and Mr. Porter.
If you have a style question, search:
https://dieworkwear.com/ | https://putthison.com/start-here/
John Scott-Railton @jsrailton.bsky.social Chasing digital badness. Senior Researcher at Citizen Lab, but words here are mine.
The Hague Program on International Cyber Security @thehagueprogram.bsky.social Applying critical thinking to cyber peace and security issues, a research program part of the Institute of Security and Global Affairs at Leiden University, based in The Hague, the Netherlands.
Nick Couldry @couldrynick.bsky.social I teach media communications and social theory at London School of Economics. Main interests: data colonialism, AI, rebuilding social media. Links to my two new books: https://linktr.ee/SpaceOfTheWorldBook https://lnk.to/DataGrabBook
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
Matthew Savill @mtsavill.bsky.social Director of Military Sciences at the Royal United Services Institute; recovering former civil servant; all views expressed here are my own.
James Shires @jamesshires.bsky.social Co-Director, Virtual Routes (virtual-routes.org)
Managing Editor, Binding Hook (bindinghook.com)
Author of The Politics of Cybersecurity in the Middle East
Joe Jarnecki @jjarnecki.bsky.social Digital security, technology and geopolitics at @rusi.bsky.social
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.
Virtual Routes @virtualroutes.bsky.social Virtual Routes tackles the impact of digital and emerging technologies on global affairs. Also check out @bindinghook.bsky.social, our media outlet.
Joe Tidy BBC News @joetidy.bsky.social Cyber Correspondent, BBC News. Author of Ctrl+Alt+Chaos. I cover cyber security, online safety, crypto, AI, social networks and everything 💻📱📡. Global news mainly. DMs always open for tips/ feedback.
jon greig @jgreig.bsky.social cybersecurity reporter for The Record.
formerly: zdnet, techrepublic, blavity, haitian times, cambodia daily
— send tips to jonathangreig11@protonmail.com or signal: jgreig.51
Alexander Martin @alexmartin.bsky.social Journalist covering cybersecurity and intelligence. UK Editor at The Record from Recorded Future News. Dad of two.
🏠 Sheffield
📧 alexander.martin@therecord.media
📱 Signal: AlexanderMartin.79
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
Maria Nizzero @marianizzero.bsky.social Principal for Sanctions Policy at UK Finance. Former Research Fellow at the Centre for Finance and Security at RUSI. PhD in Int Relations. geopolitics, illicit finance and asset recovery.
male parta, male dilabuntur.
all views are my own.
@tashbuckley.bsky.social @tashbuckley.bsky.social 
The New York Times @nytimes.com We seek the truth and help people understand the world. Not a subscriber? Your first month is now free in our app. https://nytimes.onelink.me/Xpht/zbx4nci9
Financial Times @financialtimes.com The best of FT journalism, including breaking news and analysis.
https://www.ft.com
The users this account follows are verified FT staff or contributors.
Ciaran Martin @ciaranm.bsky.social Calm the FUD down
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.
JD Work @hostilespectrum.bsky.social Former intel, now academic @NDU_CIC, @TheKrulakCenter, @SIWPSColumbia @ColumbiaSIPA, @CyberStatecraft, @ElliottSchoolGW, @PAISWarwick. Apolitical, views=own
Dan Black @danwblack.bsky.social Previously Google, NATO, 🇨🇦 Government. Views mine and mine only.
Arthur L @apb-ldn.org Senior Researcher, Cyber Security
Jakob Bund @bundj.bsky.social Unpacking cyber ops @ SWP Berlin & building a European Repository of Cyber Incidents | fomerly Virtual Routes, CSS ETH Zurich, University of Oxford, EUISS
Katharine Millar @drkmillar.bsky.social Associate prof LSE IR, she/her. Feminist academic, writes about gender and violence (and sometimes militarism. and cybersecurity. also, death).
Website: www.katharinemillar.com
Danny Moore @moore.bsky.social Cyber-warfare | PhD from KCL | Author of 'Offensive Cyber Operations' | Security @ Meta 
RUSI @rusi.bsky.social Royal United Services Institute for Defence and Security Studies. Founded in 1831, RUSI is the oldest defence and security think tank in the world.
Website 💻: https://rusi.org/
WhatsApp 📱: https://bit.ly/4h0M5FQ
Shashank Joshi @shashj.bsky.social Incoming Washington bureau chief at The Economist. Previously defence editor for eight years.
Visiting Fellow at Department of War Studies, KCL. For speaking engagements: https://chartwellspeakers.com/speaker/shashank-joshi
Taylor Grossman @tgrossman.bsky.social Director for Digital Security @istorg.bsky.social | Editor @bindinghook.bsky.social 🚀 | Stanford & Oxford alum | often hiding in ⛰️
Valentin Weber @weberv.bsky.social Senior Cyber Research Fellow @dgap.org | Biweekly brief on China's technological control at home & influence abroad: https://chinatechnosphere.substack.com
James Sullivan @mrjamessullivan.bsky.social Director, Cyber, RUSI
Myriam Dunn Cavelty @myducave.bsky.social Senior Scientist, Center for Security Studies, ETH Zürich
Cyber-Security Politics
Co-editor of Contemporary Security Policy
Eugenio Benincasa @euben.bsky.social Cyber Defense Researcher @ethz.ch. Former Italian govt, Pacific Forum and NYPD. LUISS & Columbia University Alum.
Miguel Alberto Gomez @drmagomez.bsky.social Senior Research Fellow, Lee Kuan Yew School of Public Policy, NUS. Cybersecurity, running, hiking, cigars, and D&D
Paul Chichester CMG MBE @0xchich.bsky.social Director Operations, NCSC, GCHQ. 30+ years in Government Cyber Operations. Views entirely my own and do not necessarily reflect those of my organisation. 🏴 🇺🇦
Joe Devanny @joedevanny.bsky.social Senior Lecturer | National Security & Cyber | Department of War Studies | King’s College London | All views mine, etc.
Stephanie Carvin @stephaniecarvin.bsky.social Former national security analyst, Associate Professor, Senior Fellow Centre for Strategic Statecraft. Research on national and international security based in Ottawa, Canada 🇨🇦
Alicia Wanless @lageneralista.ca Information Ecologist exploring the information environment | Senior Fellow at @carnegieendowment.org and Director of @ieproject.bsky.social | PhD from KCL War Studies | Visiting Researcher @uniofbath.bsky.social | Author of The Information Animal 🇨🇦
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
Andre Barrinha @abarrinha.bsky.social Politics, security, technology, and sport
Research profile 👉 https://researchportal.bath.ac.uk/en/persons/andre-barrinha 
Marietje Schaake @marietjeschaake.bsky.social Proud European 🇪🇺 Fellow at Stanford 👩🏼💻 column in FT 🗞️Member of European Parliament 2009-2019 📕Author: The Tech Coup
Ollie Whitehouse @ollieatnowhere.bsky.social CTO at the UK's National Cyber Security Center