penumbra @penumbra.zone A fully private, cross-chain proof-of-stake network and decentralized exchange for the Cosmos and beyond. PENUMBRA IS HERE: https://penumbra.zone/
Brandon K Nolte @brandonnolte13.bsky.social Geopolitics🔸 Intelligence Command and Control JADC2 / Spaceforce CI Arch 🔸Strategy🔸Cyber🔸Space/Anti-CultWarfare🔸 Anti-Hybrid Treasury/DoJ 🔸 AntiFaAF 🔸 Open to Offers
Germ Network @germnetwork.com Private conversations, faster.
End-to-end encrypted DMs and voice notes from your Bluesky/Blacksky/atproto handle.
Download: https://apps.apple.com/us/app/germ-dm/id6446882771
Learn: germnetwork.com/blog
Find out: germnetwork.com/android-waitlist
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
d@nny disc@ mc² @hipsterelectron.bsky.social typing free software to break the shoulders of giants from golden handcuffs. i build tools to level the playing field.
i have a better bio at https://circumstances.run/@hipsterelectron
redshiftzero @redshiftzero.bsky.social CTO @freedom.press
i like computers, cryptography, physics
github.com/redshiftzero
formerly @penumbra.zone
Lean Focused Research Organization @lean-lang.org Supporting the Formal Mathematics revolution
Miro Haller @mirohaller.bsky.social PhD student @ UCSD working on applied cryptography
https://mirohaller.com
Lynn Engelberts @lynnengelberts.bsky.social Postdoctoral researcher at Centrum Wiskunde & Informatica (CWI) | Designing quantum and classical algorithms for cryptanalysis of post-quantum cryptography 🔍
Sophie Huiberts @sophie.huiberts.me CNRS researcher in linear programming
Phoenix R&D @phoenixrd.bsky.social We Build Secure Communication Solutions
Thibault @thibmeu.com Drinking tea. Eating croissant. Distributed systems, Cryptography at Cloudflare
Freedom of the Press Foundation @freedom.press Protecting, defending public interest journalism in the 21st century.
Donate: freedom.press/donate
Subscribe to our ne🦋sletters: https://freedom.press/newsletters/
Staff, board members and allies in our Starter Packs.
More: linktr.ee/freedomofpress
Dan Underwood @underwood.digital Security Engineering @ Apple, Ex-UK Gov
The intersection of technology (device and national security), and liberal arts (public policy)
Why @why.bsky.world Wandering Wizard Utopian
General Partner @mana.inc
🌳
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
B! 🐝 Cavello (they/them) @b-cavello.bsky.social activist, aspiring-polymath, problematic feminist working to better this world
@b_cavello@mastodon.publicinterest.town
avatar: Portrait of B against colorful background
banner: Collage of creative commons illustrations
Filippo Valsorda @filippo.abyssdomain.expert @geomys.org founder / RC F'13, F2'17
Cryptogopher / Go cryptography maintainer
https://filippo.io / https://github.com/FiloSottile
https://mkcert.dev / https://age-encryption.org
https://sunlight.dev / https://filippo.io/newsletter
Julian Mair @julianmair.com Working on @air.ms, a new private messenger based on Messaging Layer Security (MLS), built by @phoenixrd.bsky.social.
Digital, Human & Queer rights 🏳️🌈🏳️⚧️ | Privacy & Security | Anti-Facism ✊
he/they
📮 julianmair.com/contact
Seny Kamara @senykamara.com I design encryption algorithms for a living but am a Hip Hop scholar at heart. Former CS professor at Brown & research scientist at Microsoft. I currently lead research at MongoDB. I think about how data, algorithms, power and culture intersect
Anna Weine @an-dante.bsky.social Security/Cryptography @mozilla
Air @air.ms A new private messenger based on Messaging Layer Security (MLS), built by Phoenix R&D. Invite-only for now.
https://air.ms
Thomas Ptacek @sockpuppet.org Full of passionate intensity.
Olvid @olvid.io Private messaging for everyone.
👉 https://olvid.io
Fredrik Dahlgren @fegge.bsky.social Cryptography and static analysis @ Trail of Bits
@pinkflawd.bsky.social @pinkflawd.bsky.social 
Blackhoodie @blackhoodie.bsky.social Blackhoodie is a free, women-only reverse engineering workshop. Check our website for infos! #BHRE
Web: https://blackhoodie.re & Donate: https://donate.stripe.com/9AQaGq3Ho6084aAdQQ
Virginie Pageaud (Casavecchia) @la-fee-dragee.bsky.social 🏳️🌈🎶🎹
Geek mum, musician, passionate, curious and versatile
Customer Success Engineer @quarkslab.bsky.social
Swiss army knife in tech
SnowCamp Team
She/Her/Elle
https://virginie-blog.pageaud.net/
Signal News & Tips @aboutsignal.com All about Signal: news, tips, and more! AboutSignal.com is not an official website or Bluesky account of @signal.org
Quarkslab @quarkslab.bsky.social Securing every bit of your data
https://quarkslab.com
Clémentine Maurice @bloody-tangerine.bsky.social Researcher at CNRS. Feminist. I work on microarchitectural security.
https://cmaurice.fr
Richard Barnes @ipv.sx Trying to do right by the world, in part by using computers and cryptography.
(🦋 DMs disabled, please use Germ 🦠)
Nick Sullivan @nicksullivan.org Asymmetries in action
Real World Crypto Symposium @rwc.iacr.org The official Real World Cryptography Bluesky feed. Follow us for news of upcoming events.
crypto_doodles @cryptodoodles.bsky.social drawing cryptographers, one talk at a time
Meredith Whittaker @meredithmeredith.bsky.social President of Signal, Chief Advisor to AI Now Institute 
Kenny Paterson @kennyog.bsky.social Bit flipper
Paul Rösler @roeslpa.bsky.social Assistant Prof. for Real-World Cryptography at FAU Erlangen-Nürnberg.
Worked at NYU, TU Darmstadt, and Ruhr Uni Bochum before.
https://roeslpa.de
Jon Millican @jonmillican.bsky.social Applied privacy engineer in the UK. Currently at OpenAI. Previously helped to lead end-to-end encryption for Messenger at Meta. he/him
Nils Fleischhacker @cryptomaeher.bsky.social Cryptographer working on both applied and theoretical cryptography. Currently Assistant Professor for Cryptography at Ruhr University Bochum. Opinions probably someone else's. he/him
Ryan Ragona @ragona.com cryptography + trusted computing @ openai. I’m into guitar, music theory, photography, and weird math. he/him. anti-fascist. child of radical queers. 🏳️⚧️ 🖤
Frederic Jacobs @fredericjacobs.com www.fredericjacobs.com
https://ger.mx/A-RGsldmQt0iXfnzPgXNzLzA5_jvDbWHabqz1yJrt2ma#did:plc:oxwmqopgbm3driwzues7odpz
Pass the SALT Conference @passthesaltcon.bsky.social - WHAT Conference dedicated to #Security and #FreeSoftware
- WHERE Lille, north of France
- LANG English spoken event
- WHEN June, 30 -> July, 2 2026
- COST the conference is entirely FREE: talks, workshops and social event.
#pts26- A @akw886.bsky.social @akw886.bsky.social
Martin R. Albrecht @malb.bsky.social Cryptography Professor at King's College London and Principal Research Scientist at SandboxAQ. Erdős–Bacon Number: 6. He/him or they/them.
https://malb.io
Raphael Robert @raphaelrobert.bsky.social Founder and director of @phoenixrd.bsky.social. Working on @air.ms. #MessagingLayerSecurity co-author. 🦀. He/him.
Matthew Green @matthewdgreen.bsky.social I teach cryptography at Johns Hopkins. https://blog.cryptographyengineering.com
Olivier @gloupin.bsky.social Professor (@Polytechnique)
Torturer of cryptographic primitives
Tech should help people, not the opposite
He/him/any
Tancrède Lepoint @tancre.de Applied Scientist at AWS • Cryptographer • My opinions are my own • 🏳️🌈 (he/him)
Lúcás Meier @cronokirby.com Cryptographer working on Penumbra
Cryptography, FP, Math, and other cool stuff.
Blog too infrequently at cronokirby.com
Lost in Seattle somewhere
Nigel Smart @smartcryptology.bsky.social Cryptographer
JP Aumasson @aumasson.jp https://aumasson.jp
cofounder & CSO @ taurushq.com
cryptographer (BLAKE2, BLAKE3, SipHash)
author of Serious Cryptography https://nostarch.com/serious-cryptography-2nd-edition and other books
Signal: jpa.01
Deathwish the Hun @shab0y.bsky.social Info ∙ Musique ∙ Montagne
Pascal Junod @cryptopathe.me applied cryptographer - certified nerd god - head of cryptography & research at duokey - founder modulo p - ex-Snap - co-founder ex-strong.codes - has-been professor - trail runner - aidjolat
Cryspen @cryspen.com High Assurance Software
The Matrix.org Foundation @matrix.org Matrix is an open network for secure, decentralised communication. Please support at matrix.org/support
Deirdre Connolly¹ ² @durumcrustulum.com 🜗 🝒 🝲 crypto as in 'cryptography' 🝳 🝡 🜖
¹ isogenist, co-host SCWpod
² https://durumcrustulum.com, https://www.youtube.com/@durumcrustulum
Security Cryptography Whatever @scwpod.bsky.social @durumcrustulum.com, @sockpuppet.org, @dadrian.io
“Freewheelin’ dynamic”.
https://securitycryptographywhatever.com
https://podcasts.apple.com/us/podcast/feed/id1578405214
Bluesky Safety @safety.bsky.app Sharing updates about trust and safety on Bluesky.
This account’s mentions are not actively monitored. To report a post or account, use the in-app reporting feature.
Community Guidelines: https://bsky.social/about/support/community-guidelines
AT Protocol Developers @atproto.com Social networking technology created by Bluesky.
Developer-focused account. Follow @bsky.app for general announcements!
Bluesky API docs: docs.bsky.app
AT Protocol specs: atproto.com