I no longer use Twitter. Come say hi on Mastodon https://xitter.cf/t.co/6YihkzNA4w 🐘 or Bluesky https://xitter.cf/t.co/vm97A867rE 🦋
Zurich, Suisse
Joined July 2011
- Tweets2K
- Following418
- Followers5.2K
- Likes361
Pinned Tweet
Looking for a friendly, accessible way to learn about differential privacy? 🧐 Prefer simple explanations to ugly equations? 😇
Introducing my ✨ newly revamped ✨ blog post series about differential privacy, now with an intro page & table of contents 🌈
desfontain.es/privacy/friend…
Hahahaha I'm hearing that posts that mention other social networks by name are de-prioritized in "for you" timelines. What a loser move 🤣
Anyway I'm over there ⤵️
I now have a presence on Bluesky: bsky.app/profile/desfontain.… 🦋
If your main presence is on Bluesky, it'd be fantastic if you could follow bsky.app/profile/ap.brid.gy, so your posts are also mirrored on Mastodon, and I can follow you from there 💖
Super excited about this ✨ new blog post ✨, where I try to offer a super simple & intuitive explanation of the exponential mechanism, a fundamental building block in differential privacy 🧱
Feedback welcome! 💝
desfontain.es/privacy/choosi…
Updated my list of real-world deployments of differential privacy! 🚀
Changelog:
- Added the @Wikimedia pageview release 🌐
- Added two releases by @uscensusbureau 🇺🇸
- Added details on a COVID-19 release from Google 💉
- Various maintenance fixes 🛠️
desfontain.es/privacy/real-w…
New, by me: what do we know about differential privacy composition theorems? What's missing, and would be useful to folks who are building practical DP software? 🔧
This blog post surveys existing results and raises a bunch of overlooked open problems. Feedback welcome! 💖
This Post is from an account that no longer exists. Learn more
Thanks a ton to @thegautamkamath, @ccanonne_, and @shortstein for their feedback and their help publishing this!
New blog post co-written by yours truly! In which we look at data clean rooms, what they do, what they often don't do, and why that can be a Problem™ 😬
Feedback super welcome as always! 🌈
This Post is from an account that no longer exists. Learn more
Ted retweeted
first arxiv preprint ever🫣 “Publishing Wikipedia usage data with strong privacy guarantees,” which i’ll be presenting at TPDP 2023 in a few weeks
arxiv.org/abs/2308.16298
Ted retweeted
Hear it at 2023 USENIX Conference on Privacy Engineering Practice and Respect: *Privacy-Preserving Analytics on the Ground* presented by Ryan Steed (Carnegie Mellon University). View the program and register now: bit.ly/pepr23prog #pepr23
If you're at @PET_Symposium next week, don't miss Marika Swanberg's talk about her research at @TumultLabs last summer: a novel DP mechanism for partition selection which, in contrast to prior work, scales horizontally 📈
In collaboration with Sam Haney & yours truly 😊
More info in the paper → arxiv.org/abs/2301.01998 🎓
And check out the full @PET_Symposium program; there it a ton of fantastic work in there: petsymposium.org/2023/progra… ✨
Ted retweeted
"When we want to protect individuals whose data is distributed across multiple rows, protecting individual rows is not enough." @TumultLabs introduces privacy IDs, .. "privacy identifiers enable the protection of individuals across large datasets, no matter how often they appear"
This Post is from an account that no longer exists. Learn more
And now for something different: during a customer engagement, we stumbled upon a natural, but surprisingly tricky open problem in differential privacy. We couldn't figure it out, so we posted a simplified version of it as an open problem on DifferentialPrivacy.org 👀
Open problem - Better privacy guarantees for larger groups
differentialprivacy.org/open…
Many thanks to @thegautamkamath, @thejonullman and @shortstein for the helpful comments and the help with editing & publication ❤️
Woo-hoo, this is a huge step for Tumult Analytics! 🤩
Privacy IDs are a super important feature, and making it work with all our other advanced features was no small feat 😊
Check out the blog post we wrote to explain what problem it solves, and how it works in practice ✨
This Post is from an account that no longer exists. Learn more
I'll give a talk there! About floating-point vulnerabilities in differential privacy software. Mark the ticket sales on your calendar, from what I hear, tickets run out fast!
TICKETS, SAVE THE DATE:
we will have two batches of ticket sales for #BSidesZH opening soon
- Wednesday, July 12th 15:00 (UTC+2/CEST)
- Thursday, August 3rd 16:00 (UTC+2/CEST)
Price as usual, 10CHF
#PleaseRT #InfoSec #DFIR #ThreatIntel Cc @SecurityBSides
bsideszh.ch/registration/
Ted retweeted
excuse me while I earnest-post about my work for a sec!! along with @TumultLabs I helped @Wikimedia release ~250 million private pageview stats, covering ~1 *trillion* pageviews from wikipedia and other projects from 8 years of browsing activity
Did you know that we release data about pageviews of every Wikimedia project hourly?
But we were asked to go further.
In partnership with @TumultLabs, we released today almost 8 years of pageview data divided by country, project, and page. Take a look ⬇️
w.wiki/6rh6
It was such a privilege to work with @Wikimedia folks on this data release 💙
They care a *ton* about the privacy of Wikipedia users, and also wanted to uphold the nonprofit's commitment to transparency and open data 🔓
A perfect job for differential privacy! ✨
This Post is from an account that no longer exists. Learn more
Ted retweeted
Did you know that we release data about pageviews of every Wikimedia project hourly?
But we were asked to go further.
In partnership with @TumultLabs, we released today almost 8 years of pageview data divided by country, project, and page. Take a look ⬇️
w.wiki/6rh6