Georgios Kontaxis @k0ntax1s
Ph.D. in Computer Science. Security and Privacy. (On Mastodon: @[email protected]) cs.columbia.edu/~kontaxis/ Columbia University, NYC Joined June 2012-
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Inflight wifi didn't work so of course I had to debug it. It appears the problem is lack of DHCP lease. The WiFi was using 8 hour leases, which was time enough for many planeloads of passengers to embark/disembark. A quick ARP scan at the time showed there were 55 devices on the…
SMTP Smuggling - Spoofing E-Mails Worldwide sec-consult.com/blog/detail/sm…
Today @FTC took action against Rite Aid for recklessly using facial recognition tools, leading to innocent people being wrongly accused of shoplifting. Our order prohibits the firm from using facial surveillance tools for 5 years, among other protections. ftc.gov/news-events/ne…
The full text of "Firewalls and Internet Security, Second Edition”, by Bill Cheswick, Avi Rubin, and myself, has been released under a Creative Commons license at wilyhacker.com. We include the full LaTeX source of the book, since we typeset it ourselves.
Framing Frames: Bypassing Wi-Fi Encryption by Manipulating Transmit Queues papers.mathyvanhoef.com/usenix2023-wif…
Messaging Layer Security: Secure and Usable End-to-End Encryption ietf.org/blog/mls-secur…
OpenSSL support for RFC7250 raw public keys has been merged into the 3.2 development branch (master): github.com/openssl/openss… This supports trust validation via DANE TLSA records! I have pre-release code that adds DANE-with-RPK support to Postfix: github.com/vdukhovni/post…
Zoom and dark patterns. Click a meeting link. It auto-downloads Zoom. Ignore that. The 'launch meeting' page gives no indication that you can join via browser but suggests install the Zoom Client. Click 'launch meeting' & you get the choice to 'Join from your Browser'.
From the TLS newsletter: Mike Malone wrote a blog post about using short-lived certificates to avoid having to deal with revocation. buff.ly/3Jn8QUg
When can two TCP sockets share a local address? blog.cloudflare.com/the-quantum-st… @jkbs0 did a cool investigation on when bind-before-connect can reuse local port occupied by connect() and vice-versa. The results will shock you! :)
📢Our work on automated discovery of memory safety vulnerabilities in DL frameworks has been accepted at @USENIXSecurity 2023! Jointly with @neochristou @di_jin42 @Vatlidak @baishakhir | arxiv.org/abs/2209.14921 | gitlab.com/brown-ssl/ivys… | 39 CVEs 😎🤘💣#ivysyn #brownssl #usesec23
Really excited to see Google doing OHTTP with Fastly. My sources tell me it only took Fastly 45 minutes to build this. Amazing! Awesome to see this technology being used in the wild. Next up, OHTTP for DNS. developer.chrome.com/blog/oblivious…
I'm very excited about the types of things OHTTP infrastructure will enable, so it's great to see it deployed in practice. e.g., I could imagine collecting signals of page breakage from tracking protection.
I'm very excited about the types of things OHTTP infrastructure will enable, so it's great to see it deployed in practice. e.g., I could imagine collecting signals of page breakage from tracking protection.
Google Chrome - Partnering with Fastly—Oblivious HTTP relay for FLEDGE 𝑘-anonymity server developer.chrome.com/blog/oblivious…
Let’s move the web PKI forward - together. chromium.org/Home/chromium-…
That brings up the question of what should be revoked? For ages, I have been saying revocation reasons don't make sense in the WebPKI. Well Mozilla agreed and has worked on defining those reasons better blog.mozilla.org/security/2022/…
Well this is not awesome. @Raspberry_Pi Camera v3 produces RF EMI on the GPS L1 frequency when enabled. Enough to make a GPS receiver maybe 20cm away from the camera cable drop lock. Camera v2 doesn't do this.

Carl Dong → obscura... @carl_dong
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Evelyn Goldner @EvelynGold22828
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Eugene Hermiston @EugeneHerm31141
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YeddaMotley @jF46sU3L450s8
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SabinaWoolf @L7zj23dIFY6Hst
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Tososmough @tososmough93230
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Sheteyez @sheteyez55074
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trustilio B.V. @trustilio
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Sarah Tucker @sjtucker13
404 Followers 791 Following Marine microbial ecology, PhD🦠🧬 Post-doc @MBLscience in the Meren Lab, she/her
sofía celi @claucece
8K Followers 5K Following Proud LatinAmerican • "Legendary quantum lady/cryptographer" • Researcher @brave • she/they • hrpc/pquip co-chair @inretafo anti-fraud @w3c @otr_im @LondonU
Ryan Sleevi @sleevi_
6K Followers 601 Following I work on stuff on @Apple Cloud Services. Tweets are my own, not my employer’s. @kateconger-knower-knower. He/him @[email protected]
Sam Suri @fing3rpr1nt
13 Followers 332 Following ~Privacy Researcher~, currently focused on offensive privacy, tweets are my own and don't reflect fruit
Keio University AI Co... @ai_consortium
37 Followers 565 Following Institute of students by the students for the students. Programming, AI and business related lectures, contests are held through the year. Contents are Free!
Ben Nassi @ben_nassi
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Artem Goncharov @0xArtem
28 Followers 685 Following
DNS-OARC @dnsoarc
2K Followers 819 Following @dnsoarc will be ending activity on this account by May 28, as this platform no longer aligns with our communications strategy. https://t.co/kl6r0OPXbM
oApistosThomas @OApistos
83 Followers 679 Following Πιστεύω στους μεγάλους εφευρέτες, τους ήρωες, τους ποιητές, που αλλάζουνε, με μια χειρονομία, τη γεωγραφία και τα πεπρωμένα
Forgotten Memories @DeletedMemorial
68 Followers 158 Following A project of images people thought they deleted from SD cards. From around the country and around the world.
CyberSec Training and... @AndCybersec
89 Followers 527 Following @andirea_theu Msc,Bsc, Cybersecurity Analyst, CCNA Security, CCNA, HCNA, Comptia Security+, CISSP
dinesh babu @dnshbbu
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Dr. Amit Elazari, JSD @AmitElazari
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Georgetown Crypto Clu... @Gtown_Crypto
76 Followers 370 Following Club focusing on Cryptocurrency and blockchain. now @gtown_bitcoin
Brian Stoner @bsstoner
1K Followers 1K Following Head of Product @CapeWireless, early engineer and product leader @DuckDuckGo, ex-startup founder. I delete my tweets.
Jonathan Jackson @w3D... @jondevops
414 Followers 4K Following Programmer 🤓| Dance 🎧🎧 | #w3Develops🔥 | #freeCodeCamp | #100DaysOfCode https://t.co/ktnsltMpDD
@[email protected]... @letoams
2K Followers 787 Following Aiven Security Engineer IETF Security Area Director, IESG member Opensource dev: libreswan, Fedora, etc (see github) NIST SP800-77 Rev.1 author RDRonline player
Vaibhav Sharma @vbsharma
163 Followers 693 Following PhD graduate from the University of Minnesota working on improving and applying program analysis towards security and software engineering applications
Steve Weis @sweis
10K Followers 3K Following Software engineer interested in cryptography, security, privacy, and machine learning.
Computers @Computers_MDPI
531 Followers 738 Following Computers (ISSN 2073-431X) is an international scientific open access journal of computer science. Indexed in Scopus, ESCI, Inspec (IET) and DBLP.
rakib @rakib062
707 Followers 1K Following Asst. Prof. @SCAI_ASU. Past @CISPA, @ICSIatBerkeley, @MPI_SWS. @IULuddy alumnus. Research on usable privacy+security.
handongxue @likev
5K Followers 5K Following after 80'/气象工作者/不苟同/关注天气变化/向往自由/热爱科学、互联网、编程 Node.js Web C++ Julia Python
Sagar Bedi @iSagarBedi
1K Followers 8K Following Digital Marketer ⚡ Domainer 👉 Tweets : AI / Tech - #Marketing #SEO #Domains 🔔 Follow For #AI Tools & Tips & #Tech 👨🏻💻 eX Google Maps, IBM, Amazon
Osama Ahmed @Osama_esoo0
210 Followers 2K Following Offensive security engineer & bug bounty hunter. Tweets are my own & using X for info sec only
Fox @BlackHoleFox
67 Followers 1K Following I do some things. Some of them are vaguely interesting if you stretch your imagination far enough. Maybe. https://t.co/83PljQOqCJ | same on the blue
DFM @DFMonitoring
113 Followers 3K Following
James @Zaragis
21 Followers 186 Following
Mahesh M @learn_2_grow
104 Followers 1K Following A Dreamer , who is still trying to get in terms with reality.
jonnybanana @jonnybanana84
930 Followers 5K Following
Alexander Knorr @opexxx
11K Followers 8K Following
Penguin in the Alps @objetsfabuleux
330 Followers 620 Following This penguin needs IPv6. #VIIRB #zerocarbon #VPS #alpine #archlinux #centos #debian #devuan #fedora #freebsd #openbsd #ubuntu https://t.co/lrX05eNFWf
Archie Pocsedio @CyberArchSecur1
953 Followers 5K Following Security Enthusiast, Threat Hunter, Purple Teamer, Technology Innovator, and Bibliophile
S @pwnsdx
5K Followers 475 Following Dev & security researcher advocating human rights. Pro-individual freedom & privacy. Never far-right (J'ai décidé de les choquer en 2025).
Market IKR @MarketIkr
465 Followers 3K Following MarketIKR. We change the game! #Cozmo Wheel Caps available from link in bio.
Travis Monson @TravisM_CyberSN
289 Followers 1K Following Director of Cyber Security Recruiting (CyberSN) 💻 Tour guide of SF 🌉 Walked every street of SF. 1,700+ miles. “All opinions expressed are my own.”
Heather Goodnight @HBREssential
136 Followers 2K Following entrepreneur and executive leader with more than a Decade of experience in Information Security, Application Risk Management and Quantitative Risk Analysis.
निर्मोह... @nirmohi_bhor
2 Followers 344 Following नवेला।। खाओ और डकार लो।। तांडवहारी गांधीवादी।। .ti edoced u nehw ti tog u
Luiza Jarovsky, PhD @LuizaJarovsky
20K Followers 31 Following Co-founder of https://t.co/MeQaJmVqzM (1,300+ participants). Author of https://t.co/eByVy8oVhs (75,000+ subscribers). Mother of 3.
Alvaro Bedoya @BedoyaUSA
15K Followers 1K Following For the little guy. Former FTC commissioner / current Bad Bunny stan. Founder @GeorgetownCPT & @EsperanzaDMV.
Lina Khan @linamkhan
129K Followers 712 Following Served as 57th Chair of the Federal Trade Commission. Retweets, Follows, & Likes ≠ Endorsements.
Erica Bunnies & Puppi... @ohemorange
744 Followers 1K Following bun content (buntent) influencer. the official @EFF account is over there, not over here. fine, I'm @[email protected]
Sarah Tucker @sjtucker13
404 Followers 791 Following Marine microbial ecology, PhD🦠🧬 Post-doc @MBLscience in the Meren Lab, she/her
Privacy Matters @PrivacyMatters
41K Followers 2K Following Pat Walshe. Retired data protection & privacy pro but not entirely disengaged on key subjects Embracing Yutori ゆとり @yutoriwalking.bsky.social
Adrián Granados @adriangranados
4K Followers 417 Following Co-founder @intuitibits | Maker of @wifiexplorer | @wlanpi Core Dev | 🛜
Feisty Duck @feistyduck
2K Followers 28 Following The place for TLS and PKI education. Publishers of Bulletproof TLS and PKI. Authors of Practical TLS and PKI training. Cryptography & Security Newsletter.
Gabriel Weinberg @yegg
117K Followers 2 Following Founder & CEO of DuckDuckGo. Author of The Great Race. Co-author of Super Thinking and Traction. Tweets auto-delete via TweetDelete.
Retro Tech Dreams @RetroTechDreams
200K Followers 280 Following Retro tech, early web & vintage computing. 80s, 90s, 2000s nostalgia. Follow for daily posts.
Mike McQuaid @MikeMcQuaid
7K Followers 0 Following Product and engineering leader, ex-@GitHub Principal Engineer, 18 years of experience reducing developer friction and scaling @MacHomebrew to over 10m users.
Ryan Hurst @rmhrisk
6K Followers 3K Following Dropout. Father. I build things. Security, Cryptography, Engineering, Entrepreneurship. @peculiarventure + xMSFT + xGOOG ++. also on https://t.co/FaDXJfnZBm & Bluesky
Julien Vanegue @jvanegue
6K Followers 958 Following CTO Office / Head of Infra & Security Research @Bloomberg. Interested in mathematical techniques for software, systems, and network analysis at world scale.
Breaking Aviation New... @aviationbrk
249K Followers 238 Following Breaking aviation news and top videos/photos from the @aviationbrk team. All photos/videos credited if source known, ***DM for correction/removal*** ✈️
The New York Times @nytimes
55.1M Followers 849 Following News tips? Share them here: https://t.co/ghL9OoYKMM
The FAA ✈️ @FAANews
517K Followers 2K Following Official account of the Federal Aviation Administration. Following, mention or RP does not mean endorsement.
evan j @ejcx_
7K Followers 1K Following 👾👾 Co-Founder of @RunReveal . 🐄🐄 Former Cloudflare Sr. Director of Security Engineering. JMU Double Duke. There's always more to learn.
Troy Hunt @troyhunt
240K Followers 1K Following Creator of @haveibeenpwned. Microsoft Regional Director. Pluralsight author. Online security, technology and “The Cloud”. Australian.
Andy Yen @andyyen
17K Followers 170 Following Founder/CEO @ProtonPrivacy (@ProtonMail, @ProtonVPN, etc). Previously a particle physicist @CERN, @Harvard and @Caltech. Working for a better Internet. 🇨🇭🇹🇼
Davide Balzarotti @balzarot
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Steve Weis @sweis
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Ryan Sleevi @sleevi_
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Mythic Beasts @Mythic_Beasts
3K Followers 364 Following mastodon: @[email protected] support: [email protected] status: https://t.co/gvZepeP4mH No longer actively monitored
Lucas Pardue @SimmerVigor
3K Followers 402 Following HTTP/2, HTTP/3 and QUIC @Cloudflare. Co-chair of IETF QUIC WG. Thoughts are my own. Also simmervigor on bsky and mastodon
Artur Janc @arturjanc
2K Followers 350 Following Making the web platform more secure and private, and managing part of @Google's Information Security Engineering team in my spare time.
Robert J. Hansen @robertjhansen
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Ben Adida @benadida
9K Followers 3K Following Building a voting system everyone can trust @voting_works. Past: Prod/Eng/Sec @Clever, @Square, @Mozilla, ..., Harvard, MIT. Mastodon: @[email protected]
Matthew Prince 🌥 @eastdakota
114K Followers 317 Following A little bit geek, wonk, and nerd. Repeat entrepreneur, recovering lawyer, and former ski instructor. Co-founder & CEO of Cloudflare (NYSE: NET).
Casey Newton @CaseyNewton
199K Followers 958 Following Writing @platformer. Co-hosting Hard Fork @nytimes. Posting good tweets to Instagram stories @crumbler. [email protected] | https://t.co/9KuJb8XCrr
Eric Rescorla @ekr____
2K Followers 1 Following Protocol designer, trail runner Blog: https://t.co/wJzXSZuYjw Newsletter: https://t.co/0rlUOwNnQO If you like this stuff, please tell others.
Ian Petchenik @petchmo
11K Followers 885 Following Communications @Flightradar24, co-host AvTalk podcast w/@AirlineFlyer, AvGeek. Air-ride equipped.
Joanna Stern @JoannaStern
178K Followers 2K Following 📚 Writing a book for @harpercollins about AI 👩🏻💻Senior personal tech columnist @wsj 📺 Contributor @nbcnews + @CNBC 🏆 Emmy winner, tech + family lover
Flightradar24 @flightradar24
1.3M Followers 649 Following Track air traffic in real time from all around the world! Apps: https://t.co/AnZhJUIrBg | FAQ: https://t.co/WkTgAaePHs | Support: https://t.co/BomORktp7R
HTTP Shaming @HTTPshaming
771 Followers 0 Following (Nicely) shaming websites and apps that don't encrypt user data in transit – by @webster
Encrypted DNS Deploym... @EncryptedDNS
219 Followers 0 Following We're banding together to deploy encrypted DNS standards on a global basis, improving privacy & security while preserving the distributed architecture of DNS.
Ehsan Akhgari @ehsanakhgari
2K Followers 2K Following pixel sorcerer @playground_ai - ex browser maker, @mightyapp, @mozilla; to live is to grow
Erik also @erik@nygre... @akanygren
979 Followers 2K Following Internet Systems Architect, Maker, Father, Husband, tinkerer, IPv6 evangelist, and wanna-be mad scientist. Deals with complex systems. He/Him. Tweets my own.
RFC Bot @rfcbot
437 Followers 1 Following Auto posts new @IETF RFCs and the first edition of a new Internet-Draft. Owner @bradleyfalzon. Bugs are my own.
Fabien Sanglard @fabynou
15K Followers 79 Following Computer programmer, author, and occasional link to the past. https://t.co/dhdZh9MVGv on Bluesky.
Naomi Shiffman @naomishiffman
939 Followers 829 Following data & implementation @OversightBoard | formerly academics + researchers @crowdtangle/@meta | fellow @Integrity_Inst @DFRLab | advisor @Connect_Fund
Christoph Paasch @cpaasch11
286 Followers 224 Following
Evangelos Markatos @EMarkatos
41 Followers 37 Following
Root zone changes @diffroot
701 Followers 159 Following Unofficial automated notices of root DNS zone changes excluding glue records, maintained by @fanf