Reposted by Nicolas ChristinDan York @danyork.bsky.social · 20/04/2026Very interesting and useful paper on a critically important topic ... what happens to all our digital assets when we die? How are we setting up our estate plans / wills to ensure our heirs can access our info? Something I don't think we collectively pay enough attention to... #Death #Internet 121
Nicolas Christin @nc2y.bsky.social · 14/04/2026My student Jenny Tang just presented our work at #chi26. We have been interested in post-mortem management of online accounts (1/5) andrew.cmu.edu/user/nicolas...andrew.cmu.edu 232
Reposted by Nicolas ChristinJoseph Lorenzo Hall, PhD @josephhall.org · 28/10/2025HTTPS by default security.googleblog.com/2025/10/http...security.googleblog.comHTTPS by defaultOne year from now, with the release of Chrome 154 in October 2026, we will change the default settings of Chrome to enable “Always Use Secu... 051
Nicolas Christin @nc2y.bsky.social · 20/10/2025Last week my student Ally Nisenoff published "Exploiting the Shared Storage API" at @acm_ccs: www.andrew.cmu.edu/user/nicolas... 3 days later, Google announced they're abandoning Shared Storage: privacysandbox.com/news/update-... (Correlation doesn't imply causation. Interesting, though.)andrew.cmu.edu 020
Nicolas Christin @nc2y.bsky.social · 11/09/2025We're hosting the 7th intl' conf. on Advances in Financial Technologies (AFT'25) at Carnegie Mellon on Oct. 8-10. Join us to hear about the latest exciting developments in crypto research. Registration closes on Sept 16! advfintech.org/aft25/attend... (Program: advfintech.org/aft25/progra...)advfintech.orgAdvances in Financial Technologies 021
Nicolas Christin @nc2y.bsky.social · 03/09/2025This is concerning, it seems like lower fees on Ethereum are facilitating address poisoning attacks… x.com/toxin_tagger...x.comToxin Tagger (T-T) on X: "🚨Warning🚨: There was a surge in the number of poisoning attacks on Ethereum, potentially due to the lower transaction fees. Figures: Daily number of poisoning transfers in August 2025 for Ethereum and BSC. https://t.co/jorxvN3hv3" / X🚨Warning🚨: There was a surge in the number of poisoning attacks on Ethereum, potentially due to the lower transaction fees. Figures: Daily number of poisoning transfers in August 2025 for Ethereum and BSC. https://t.co/jorxvN3hv3 011
Nicolas Christin @nc2y.bsky.social · 15/08/2025That’s a wrap for me at #usesec25 Conferences should really consider reusing the tag holders, the amount of wasted plastic is staggering 000
Nicolas Christin @nc2y.bsky.social · 15/08/2025“Canadian pharmacist helps run notorious deepfake porn site.” The online crime jokes write themselves. 110
Reposted by Nicolas ChristinWentao Guo @wentaoguo.bsky.social · 13/08/2025I'm presenting my USENIX paper "How Researchers De-Identify Data in Practice" at 9am this Thursday. Kudos to my co-authors Paige Pepitone, @adamaviv.bsky.social, and @mmazurek.bsky.social. Come say hi—I am on the academic job market! Here's the paper: www.usenix.org/conference/u... #usesec25 062
Nicolas Christin @nc2y.bsky.social · 13/08/2025Taro just presented this at #usesec25, and will be manning the poster shortly. If you are around we would love to hear from you. 021
Nicolas Christin @nc2y.bsky.social · 13/08/2025I’m not sure there is a more clichéed Seattle experience than having a latte at a local coffee shop with some salmon on toast while they’re blaring Soundgarden’s “Outshined.” 130
Nicolas Christin @nc2y.bsky.social · 12/08/2025My student Jenny Tang (coadvised with @lujobauer.bsky.social) is making friends at SOUPS with our paper on looking at 10 years of SOUPS papers and reviewing how solid the stats were. Basically: not great, not great at all. (And that includes my own work.) Paper: www.andrew.cmu.edu/user/nicolas...andrew.cmu.edu 021
Nicolas Christin @nc2y.bsky.social · 21/07/2025New research alert 🚨 from my group, “Blockchain Address Poisoning” (Tsuchiya et al.), to appear at USENIX Security 2025 (arxiv.org/abs/2501.16681)! As a follow-up, we also developed a real-time detection system: cryptotrade.cylab.cmu.edu/poisoning/ and x.com/toxin_tagger (1/7)arxiv.orgBlockchain Address PoisoningIn many blockchains, e.g., Ethereum, Binance Smart Chain (BSC), the primary representation used for wallet addresses is a hardly memorable 40-digit hexadecimal string. As a result, users often select ... 142
Reposted by Nicolas ChristinCMU Software & Societal Systems (S3D) @cmus3d.bsky.social · 19/06/2025CMU S3D’s “Tartan Federer” swept all 4 MIDST tracks, revealing privacy gaps in diffusion models. Its loss-feature attack was the only entry to beat random guessing in the white-box multi-table test. Details: s3d.cmu.edu/news/2025/0501-midst.html #AIPrivacy #CMU #AI #ML!s3d.cmu.eduCMU's "Tartan Federer" Team Sweeps All Four Tracks at International AI Privacy Challenge - Software and Societal Systems Department - School of Computer Science - Carnegie Mellon UniversityCarnegie Mellon University's "Tartan Federer" team, led by S3D’s Zhiwei Steven Wu, achieved a clean sweep at the 2025 Vector Institute MIDST Challenge, winning all four competition tracks. Their innov... 011
Reposted by Nicolas ChristinMike Wiser @drmikewiser.bsky.social · 17/06/2025Just because your prof didn't file an academic dishonesty report does not mean that they don't know you cheated. Knowing you did it and proving it to the hearing board are two different thresholds. 1314
Nicolas Christin @nc2y.bsky.social · 16/06/2025PSA: If you're using homebrew, and discovered that MAME crashes w/ a Bus Error upon startup after upgrading to Sequoia, 1) update mame.ini so that the line containing gl_lib points to /System/Library/Frameworks/OpenGL.framework/Libraries/libGLVMPlugin.dylib 2) launch w/ DYLD_LIBRARY_PATH="" mame 100
Nicolas Christin @nc2y.bsky.social · 09/06/2025🧵 about a new paper by my amazing students and collaborators. To appear this week at SIGMETRICS. 👇 010
Reposted by Nicolas ChristinCarnegie Mellon University @cmu.edu · 06/06/2025CMU researchers are using personalized models to decode how cancer behaves in individual patients, one of medicine's toughest challenges. Through individualized data and insights, their work revealed hidden #cancer subtypes that could inform treatment and improve survival predictions. #Researchcmu.eduCMU Researchers Build Personalized Models To Advance Precision Cancer CareResearchers from Carnegie Mellon University’s School of Computer Science developed a new approach to bridge this gap between available data and actionable insight, creating personalized models to help... 084
Nicolas Christin @nc2y.bsky.social · 28/05/2025Looking for a home for your great scientific result in fintech that is almost all written up and ready to go? The AFT deadline is in less than 24 hours… aftconf.github.io/aft25/index....aftconf.github.ioAdvances in Financial Technologies 000
Reposted by Nicolas ChristinSerge Egelman @v0max.bsky.social · 25/05/2025Pasta sauce cookie is something you should only attempt after you’ve gotten your second Michelin star. Like, David Chang, I’d eat his pasta sauce cookie no questions. Doing it myself because the teevee told me to, yeah, no. 0267
Reposted by Nicolas ChristinEileen Clancy 🧿 @clancyny.bsky.social · 24/05/2025In NYC, a man was tortured for two weeks for Bitcoin. He escaped. Alice Hutchings @message4bob.bsky.social and colleagues tell us it's happening around the world. Conference paper: "Investigating Wrench Attacks: Physical Attacks: Targeting Cryptocurrency Users" drops.dagstuhl.de/storage/00li... 1125
Reposted by Nicolas ChristinBen Waber @bwaber.bsky.social · 06/05/2025Next was an intriguing talk by McKenna McCall on the need to combine formal methods and usable security approaches at @cmus3d.bsky.social www.youtube.com/watch?v=qbnq... (5/7)youtube.comCurrent Topics in Privacy-January 21st 2025-McKenna McCallYouTube video by Carnegie Mellon Software and Societal Systems Dept 112
Reposted by Nicolas ChristinPatrick Park @patpark.bsky.social · 18/05/2025These talented young musicians teamed up to bring the joy of music to young children in the community. Please support their cause. 6pm (CT) tonight at Nichols Hall, Evanston. Please join us in person or through the live stream. youtube.com/live/MxXwBr_... 011
Reposted by Nicolas ChristinPittsburgh Scanner @pgh-scanner.com · 11/05/2025Lawrenceville. 44th Street. If you accidentally left your rooster in your locked car, PD is about to break your window. 1922029
Reposted by Nicolas ChristinRua M. Williams @fractalecho.bsky.social · 03/05/2025If you're a grad student or an undergrad interested in research I need to you listen to me very carefully. You cannot learn to write good research papers if you do not read good research papers. Stop asking LLMs to summarize papers for you. 232121569
Reposted by Nicolas ChristinMichael Hilton @michaelhilton.bsky.social · 02/05/2025Posted slides for my CSEE&T keynote here conf.researchr.org/details/icse...conf.researchr.orgThe Promise and Peril of SE Education in the Age of AI (CSEE&T 2025 - IEEE Conference on Software Engineering Education and Training (CSEE&T)) - ICSE 2025In 2025, the IEEE Conference on Software Engineering Education and Training (CSEE&T) will replace ICSE’s traditional education track (SEET). CSEE&T 2025 will be co-located with ICSE 2025 on Monday 28 ... 032
Reposted by Nicolas ChristinSteve Rathje @steverathje.bsky.social · 10/04/2025I'm thrilled to announce that I'll be joining Carnegie Mellon as an Assistant Professor of Human-Computer Interaction (with a courtesy joint appointment in Social and Decision Sciences) in 2026! 141306
Reposted by Nicolas ChristinCyLab @cylab.bsky.social · 07/04/2025In a @darkreading.bsky.social article, Professor Lorrie Cranor (@lorriecranor.bsky.social), CyLab Director, explains to Becky Bracken (@beckybracken.bsky.social) why, regardless of #encryption protections, #Gmail user devices and accounts still need to be secured.darkreading.comGmail Is Not a Secure Way to Send Sensitive CommsNew end-to-end Gmail encryption alone isn't secure enough for an enterprise's most sensitive and prized data, experts say. 012
Reposted by Nicolas ChristinFrederic Jacobs @fredericjacobs.com · 21/03/2025🔐✌️ Victory for Privacy and Security in France 🇫🇷 End-to-end encryption will continue to be available in France, as the assembly overwhelmingly voted against an amendment to legislation fighting drug trafficking which required backdoors in encrypted messengers. www.lemonde.fr/societe/arti...lemonde.frL’Assemblée nationale vote pour le maintien de la confidentialité des messageries cryptées, lors d’une nuit agitéeMalgré une panne du système de vote, les députés ont repoussé, jeudi, la mesure défendue par le ministre de l’intérieur, Bruno Retailleau, qui aurait permis aux services de renseignement d’accéder aux... 15524
Reposted by Nicolas ChristinSteve Syfuhs @syfuhs.net · 18/03/2025What, no? I mean, probably not. Well, it shouldn't. Look, I'm not going to find out, but yes probably. Amusingly, I think it was written by one of our VPs who just retired. 131
Reposted by Nicolas ChristinSteve Syfuhs @syfuhs.net · 17/03/2025Q: Why is the code doing this thing? A: oh...oh no 921615
Reposted by Nicolas ChristinDavid Andersen @daveandersen.bsky.social · 17/03/2025Watching Ben Titzer give a warning parable about the Lamputer (the trend towards making everything programmable) and realizing I used a raspberry pi pico as a dumb on/off light switch for my closet lights and I am part of the problem. 161
Nicolas Christin @nc2y.bsky.social · 12/03/2025A clear sign of the impending apocalypse is that the @nytimes.com spelling bee featured the letter that shall not be named today. 000
Nicolas Christin @nc2y.bsky.social · 03/03/2025It is an absolute scandal that “gianduja” isn’t accepted as a pangram in the @nytimes.com spelling bee today. What kind of Mickey Mouse operation doesn’t know about Nutella? I shall cancel my subscription. 010
Reposted by Nicolas ChristinDelbert Grady Seasons @delbertgseasons.bsky.social · 25/02/2025I don’t know if Google can top this, their finest work to date 170110103192
Nicolas Christin @nc2y.bsky.social · 22/02/2025I am not going to NDSS this year but we have some great students attending. Is anybody among the people I know here going, so that I can make introductions? 010
Nicolas Christin @nc2y.bsky.social · 17/02/2025"Oh, but I've been so busy" is prof-speak for "I am so utterly useless at time management that I would be irremediably unemployable in any other line of work." Please don't use that sorry excuse, get better, and tend to your commitments on time. Thank you. 361
Nicolas Christin @nc2y.bsky.social · 15/02/2025My long-time collaborator from back when he was a PhD student at CMU/S3D (in @scsatcmu.bsky.social ), Blase Ur, now a CS Prof. at U. Chicago won a particularly cool award: cra.org/crae/awards/...cra.orgCRA Undergraduate Research Faculty Mentoring Award - CRA EducationThis award recognizes individual faculty members who have provided exceptional mentorship, undergraduate research experiences, and, in parallel, guidance on admission and matriculation of these studen... 052
Reposted by Nicolas ChristinDestenie Nock, PhD @destenie.bsky.social · 01/02/2025Last week the sound of a pipe bursting somewhere inside my wall, followed by a geyser of water gushing from my kitchen cabinet, interrupted my work calls. The culprit: -5 temperatures in Pittsburgh. Cost of repairs are $950 and counting, just for the pipes. #EnergySky triblive.com/opinion/dest...triblive.comDestenie Nock: Help is out there for those struggling with heating costsThe sound of a pipe bursting somewhere inside my wall, followed by a torrent of water gushing from my kitchen cabinet, interrupted one of my work calls a week ago. The culprit: freezing temperatures i... 1165
Nicolas Christin @nc2y.bsky.social · 28/01/2025Testing DeepSeek on a local machine, it does seem it has some information controls built in. It for instance does not answer questions about June 4, 1989. 130
Reposted by Nicolas ChristinChristina Areizaga Barbieri, Ph.D. @cabarbieri.bsky.social · 27/01/2025I’m an NSF panel reviewer that was scheduled to meet today. Just got notice that all NSF panels were canceled today. I reviewed some innovative proposals in support of students. Devastating if these scholars don’t get to do this work. For the love of science & students I hope this is just a delay.💔 682274719
Reposted by Nicolas ChristinLenore Blum @lenoreblum.bsky.social · 25/01/2025Super congratulations @clegoues.bsky.social!👏🥳 141
Reposted by Nicolas ChristinDr. Claire Le Goues @clegoues.bsky.social · 24/01/2025In professional news: one of the things Biden signed his last week of office was a recognition of a set of PECASE awardees. Unbelievably honored (not to mention completely dumbfounded) to have been included on that list. 1/ www.cmu.edu/news/stories...cmu.eduCMU Researchers Receive Presidential Early Career AwardsCarnegie Mellon University's Ismaila Dabo, Claire Le Goues and Aaditya Ramdas are among the recipients of the Presidential Early Career Award for Scientists and Engineers (PECASE), the highest accolad... 11383
Reposted by Nicolas ChristinAndy Greenberg @agreenberg.bsky.social · 22/01/2025Trump pardons Ross Ulbricht after eleven years in prison. An incredible twist in the never-ending Silk Road saga. www.wired.com/story/trump-...wired.comTrump Frees Silk Road Creator Ross Ulbricht After 11 Years in PrisonDonald Trump pardoned the creator of the world’s first dark web drug market, who is now a libertarian cause célèbre in some parts of the crypto community. 97938
Reposted by Nicolas ChristinAndy Greenberg @agreenberg.bsky.social · 22/01/2025For anyone feeling nostalgic on the occasion of Ross Ulbricht's pardon, here's my interview with him (as the Dread Pirate Roberts) from 2013, just a few months before his arrest: www.forbes.com/sites/andygr...forbes.comAn Interview With A Digital Drug Lord: The Silk Road's Dread Pirate Roberts (Q&A)Most black market drug lords don't give interviews. But the Dread Pirate Roberts isn't most drug lords. His website, the Silk Road, is designed to allow anyone to buy and sell drugs with the crypto-cu... 37821
Reposted by Nicolas ChristinDavid Andersen @daveandersen.bsky.social · 20/01/2025PSA: the Carnegie Library of Pittsburgh's website is lying today. 🤣 But hey we had a nice walk. 001
Reposted by Nicolas ChristinJoseph Lorenzo Hall, PhD @josephhall.org · 17/01/2025Enigma will be back as a track at USENIX Security: www.usenix.org/conference/usenixsec…usenix.orgUSENIX Security '25 Enigma Track Call for ParticipationSubmissions due: Wednesday, March 5, 2025 Notification to submitters: Wednesday, May 7, 2025 1299