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New research alert 🚨 from my group, “Blockchain Address Poisoning” (Tsuchiya et al.), to appear at @USENIXSecurity 2025 (arxiv.org/abs/2501.16681)! As a follow-up, we also developed a real-time detection system: cryptotrade.cylab.cmu.edu/poisoning/ and @toxin_tagger (1/7)
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Nicolas Christin retweeted
One of the best birthday presents ever. I got the NUS computing ASCENT award from Singapore! (It’s like Rising Stars).
Details coming soonnn!!
Details coming soonnn!!
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Nicolas Christin retweeted
Over 400 academics in 30+ countries signed our open letter calling for immediate changes in AI development and deployment practices to ensure that cybersecurity incidents do not continue to occur, as future incidents will be far more damaging to our critical infrastructure.
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Hey I know this guy!
Interview with @SoskaKyle to discuss the generational HYPE trade, what it's like trading with @ThinkingUSD, and how to make it this cycle.
0:00 Bull or Bear Market?
2:49 Kyle’s Journey into Crypto
8:44 “Would You Be Right or Make Money?”
15:52 Teaming up with Flood
21:01 The 2 Bitcoin and the Quantum Problem
43:20 $ZEC vs $BTC
46:30 Selling All Their $ETH
52:53 Crypto’s Real PMF
1:00:05 Are Great Traders Born or Made?
1:11:11 Memorable Trade (A Painful One)
1:21:39 Cycle Skip Theory vs 4 Year Cycle
1:26:50 Midcurve Traps & Onchain Metas
1:31:40 Hardest Lessons & How to Make It
1:37:55 Managing Tilt & the Art of Selling
1:49:02 Regrets and Final Words of Wisdom
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Nicolas Christin retweeted
I've signed this letter.
While I believe in less regulation, I deeply believe we need more engineering for safer sandboxes.
Particularly, we need methods to constrain Agentic Security Systems to be extremely powerful against their intended targets, while harmless against anything else.
This asymmetry is hard to navigate. That makes it interesting.
My proposal on Alignment Contracts from H1'26 is a first possible step, but much work is left.
Very exciting times we live in!
While I believe in less regulation, I deeply believe we need more engineering for safer sandboxes.
Particularly, we need methods to constrain Agentic Security Systems to be extremely powerful against their intended targets, while harmless against anything else.
This asymmetry is hard to navigate. That makes it interesting.
My proposal on Alignment Contracts from H1'26 is a first possible step, but much work is left.
Very exciting times we live in!
Over 400 academics in 30+ countries signed our open letter calling for immediate changes in AI development and deployment practices to ensure that cybersecurity incidents do not continue to occur, as future incidents will be far more damaging to our critical infrastructure.
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This is not an unpopular opinion.
unpopular opinion:
faculty members or TAs who use AI to write generic feedback on student assignments, or just copy/paste generic comments, have very little standing to demand that students not use AI themselves, or do any work if they do not want to
if you want students to take your class and its rules seriously, you have to take your own work seriously
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Nicolas Christin retweeted
So I made it to the Pittsburgh local news 😀
3 years after a life-altering heart transplant, she's getting her Ph.D. from Carnegie Mellon post-gazette.com/news/education…
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My 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/nicolasc/…
andrew.cmu.edu/user/nicolasc/…
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A lot of us have completely moved all asset management online. I haven't been to my bank since 2005. Yet, a lot of estate planning does not account for, or even reflect that new reality. (4/5)
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Anyway, I digress. Read Jenny's paper. It's illuminating. Older people are far from being digitally illiterate, and we are not serving their needs well at the moment. And we have to fix this, sooner rather than later. (5/5)
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Following up on my earlier post, we're starting something quite exciting at CMU @CyLab
cylab.cmu.edu/news/2026/03/2…
cylab.cmu.edu/news/2026/03/2…
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My colleagues at @CarnegieMellon @CyLab and I wrote a position paper/manifesto about our view of the future for cyber autonomy (in short: how AI is impacting computer security).
doi.org/10.1184/R1/317…
doi.org/10.1184/R1/317…
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Looks like our address poisoning work is quite prominently featured in this @etherscan blog post. Nice write up btw.
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I very rarely come 'round these parts anymore, but, I just wanted to congratulate freshly-minted Dr. @quarbby on an amazing dissertation/defense and on a wonderfully inspiring life story. Fantastic work, Lynnette!
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Nicolas Christin retweeted
🚨ALERT🚨 #ETHEREUM, 2026-01-04 21:50 (UTC)
$18,500.00 was sent to the lookalike address (0x4cb1...)
Details on cryptotrade.cylab.cmu.edu/poisoning/ethe…
$18,500.00 was sent to the lookalike address (0x4cb1...)
Details on cryptotrade.cylab.cmu.edu/poisoning/ethe…
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Nicolas Christin retweeted
Lujo Bauer has been named a 2025 ACM Fellow for contributions to access control, usable security and privacy, and the security of machine learning. Congratulations! @TheOfficialACM
ece.cmu.edu/news-and-event…
ece.cmu.edu/news-and-event…
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When it pours it rains
🚨ALERT🚨 #ETHEREUM, 2025-12-20 00:13 (UTC)
$102,671.00 was sent to the lookalike address (0x9344...)
Details on cryptotrade.cylab.cmu.edu/poisoning/ethe…
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Somebody is going to have a very merry Christmas. Somebody else is going to have a very bad Christmas (HT: @toxin_tagger).
50M bucks. Geez.
50M bucks. Geez.
🚨ALERT🚨 #ETHEREUM, 2025-12-19 15:32 (UTC)
$49,999,950.00 was sent to the lookalike address (0xbaff...)
Details on cryptotrade.cylab.cmu.edu/poisoning/ethe…
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