Yak Shaver and Security Researcher. Head of Research&Development at Chainlink Labs. Formerly at 🇨🇭 ETH Zürich, 🗽 Cornell Tech,⛓️ IC3.
Joined March 2018
- Tweets260
- Following482
- Followers1.9K
- Likes1.4K
Lorenz Breidenbach retweeted
Chainlink Confidential AI Attester enables a whole range of applications, including a bunch in this recently released paper: arxiv.org/pdf/2606.03771. (See below) As a judge at tomorrow's hackathon conclusion, I'm eager to see what other ideas the teams there dream up.
NEW: Chainlink Labs' @AriJuels is judging this year’s @ETHGlobal NYC hackathon.
Submit your project for a chance to win: ethglobal.com/events/newyork…
Lorenz Breidenbach retweeted
Save the Date: 📅 June 10-16, 2024, join us at the IC3 Summer Blockchain Camp! Led by our Technical Committee members: @suryabakshi, Haaroon
Yousaf, @ethlorenz, @stonecoldpat0! Dive deep into blockchain learning at Cornell Tech, NYC 🗽. Sponsorship opportunities are available now and registration details are coming soon! #Blockchain
Lorenz Breidenbach retweeted
🎉We're delighted to announce Prof. Christian Cachin @cczurich from @unibern joining IC3 in our pursuit of groundbreaking discoveries and transformative advancements in blockchain.🚀 We look forward to the inspiring blockchain research and invaluable contributions that lie ahead!
Lorenz Breidenbach retweeted
Congratulations to @luca_zanolini : Started four years ago as the first Ph.D. student in the CRYPTO group at @unibern, successfully defended his Ph.D. thesis on Asymmetric Trust in Distributed Systems today. Well done! Best wishes for your future consensus research at @ethereum.
Lorenz Breidenbach retweeted
A crowdsourced audit of #CCIP has launched on @code4rena with a $300K prize pool.
The contest lasts until June 12 and serves to further harden the CCIP codebase, in addition to multiple independent audits, in preparation for the initial mainnet launch.
code4rena.co/C4-Chainlink-CC…
Attention Wardens: @Chainlink’s $300k #CCIP audit has just started 🤝
If you want a slice of this (metaphorical) pie, get to work and help secure the protocol now: code4rena.co/C4-Chainlink-CC…
Lorenz Breidenbach retweeted
It's happening!! 🎉
Native fuzzing will be in Go 1.18
We just merged the dev.fuzz branch into master ✅
github.com/golang/go/commit/…
#golang
![[dev.fuzz] Merge remote-tracking branch 'origin/dev.fuzz' into merge-… · golang/go@6e81f78](https://pbs.twimg.com/card_img/2114637931336056832/zOx2VoFx?format=jpg&name=800x419)
Lorenz Breidenbach retweeted
In our paper to appear @USENIXSecurity 21, we observe that when frequently issuing interrupts, instructions execution times correlate with their virtual address (mod 16). We used this to exploit SGX enclaves. \w Moritz Schneider @M__Haller @SrdjanCapkun
arxiv.org/abs/2005.11516
ALT Picture of the first page of the paper. Top right: "Usenix artifact evaluation passed" badge. Paper title: Frontal Attack: Leaking Control-Flow in SGX via the CPU Frontend Authors: Ivan Puddu, Moritz Schneider, Miro Haller, Srdjan Capkun Affiliation: ETH Zurich
Lorenz Breidenbach retweeted
Ethereum is my love and life but I couldn't resist poking some satirical fun today.
If ETH was a Disney musical villain:
Lorenz Breidenbach retweeted
If your PhD isn't setting precedents ur doing it wrong.
I consider the battle intellectual, Ari is a wonderful advisor with a group that's doing some of the most important work in the space. Highly recommend talking to him if you're interested in academia+blockchain.
Lorenz Breidenbach retweeted
Perhaps a first step towards the right direction could be to remove the refund mechanism? That would make gas token and it's clones moot, which would in turn stop bloating the state every time there's lower gas price.
EIP1554 could counter balance it by stabilizing fees?
In light of recent gas price blowups, is the #Ethereum community still vehemently against state rent? The gas limit is kept down to avoid hitting a critical state size. If the state size could be capped, the gas limit could go up.
Lorenz Breidenbach retweeted
My guess for the new supply chain attack targets in 2021:
- GitHub Actions
- VS Code extensions
GitHub really shouldn't allow version tags of published Actions to change.
I have no ideas for VS Code, extensions are hard, as browsers know.
Lorenz Breidenbach retweeted
You can measure the speed of light at home using just a microwave and a bar of chocolate!
Lorenz Breidenbach retweeted
We're excited to announce that @arijuels, Chainlink technical advisor, co-director of @initc3org and the former Chief Scientist of RSA, is now joining Chainlink Labs as its Chief Scientist, overseeing extensive research on smart contracts, oracles and more.chainlinklabs.com
Lorenz Breidenbach retweeted
DEFCON quals had a crypto challenge involving anomalous trace-1 curves and their weakness
github.com/o-o-overflow/dc20…
But Python is even weaker than weak curves: hxp.io/blog/72/DEFCON-CTF-Qu…
Lorenz Breidenbach retweeted
Had a great time presenting Flash Boys 2.0 to the first virtual @IEEESSP #SP20, and my first virtual academic conference!
Many thanks to organizers for flexibility in these times, and for uploading open-access talks on YouTube (lots of great content!) youtube.com/watch?v=vR1v7AQ8…
Lorenz Breidenbach retweeted
OSDI/SOSP Paper:
"CoolAcronym: Making the System-You-Don't-Know-You're-Using Faster"
CCS/S&P Paper:
"Famous Movie Name: Detecting and/or Fixing the New-Critical-Vulnerability-Discovered-Last-Month at Scale"
POPL Paper:
Lorenz Breidenbach retweeted
The GHC Steering Committee just accepted the “RecordDotSyntax language extension proposal” by Neil Mitchell and Shayne Fletcher:
github.com/ghc-proposals/ghc…
With >500 comments on the PR and a contentious vote among the committee, this was the most controversial proposal to date!
Lorenz Breidenbach retweeted
PSA: Turns out @zoom_us is lying in their marketing materials - Zoom meetings are not end-to-end encrypted at all - theintercept.com/2020/03/31/… - h/t @theintercept, but call it like it is - "end-to-end encryption" has a specific meaning, which Zoom knows - this is straight-up lying.
