David Choffnes

291 Followers
313 Following
69 Posts
Professor in Computer Science at @Northeastern. I work on privacy, IoT, networking, security, and mobile. Avid cyclist and amateur coffee roaster. He/him
Websitehttps://david.choffnes.com
Massachusetts votes to pass new privacy rights bill that bans sale of precise location data | TechCrunch

The bill is expected to blanket ban companies and startups from selling people's precise location data across the state.

TechCrunch
Civil Rights and Reproductive Justice Groups Applaud Unanimous House Passage of Massachusetts Consumer Data Privacy Act - ACLU of Massachusetts

The Massachusetts House unanimously passed data privacy legislation to prevent the abuse, misuse, and exploitation of extremely sensitive personal information collected every day by Big Tech.

ACLU of Massachusetts

I was on CBS Sunday Morning today! They cut most of what we talked about, but kept a good few choice quotes. And no I don’t own a yacht…

https://youtu.be/mIOA3nQclOM

Is your phone listening to you?

YouTube

RE: https://discuss.systems/@acm_imc/116283975958230734

Students and other early-career researchers! Being on a shadow TPC is a great way to learn what actually happens when you submit a paper, and @acm_imc is a great conference!

Super interesting work from my graduated PhD student Talha. Ends up GenAI hallucinations are good for *something*!

https://bsky.app/profile/talhaparacha.com/post/3ma4vqqczps2d

paraacha (@talhaparacha.com)

Super excited to share that I'll present our latest research at ICSE 2026. Our work (co-authors Kyle Posluns, @kevin.borgolte.me, @lindorfer.in, and @proffnes.discuss.systems.ap.brid.gy) explores the use of language models for software testing in TLS certificate validation logic. 1/n

Bluesky Social

PSA from 404 Media: you can opt-out of a data broker selling your flight travel data to the government to be searched without a warrant. Here's how I did it. This is ARC, the data broker owned by major U.S. airlines like United, Delta, American, etc

https://www.404media.co/how-to-opt-out-of-airlines-selling-your-travel-data-to-the-government/

How to Opt-Out of Airlines Selling Your Travel Data to the Government

The Airlines Reporting Corporation (ARC), owned by major U.S. airlines, collects billions of ticketing records and sells them to the government to be searched without a warrant. I managed to opt-out of that data selling.

404 Media

Are airlines moving toward individualized pricing? We have reasons to be skeptical about their responses so far.

https://www.law.georgetown.edu/tech-institute/insights/tech-brief-airplane-response/

Tech Brief: Airplane Response

Kicking off our workshop on Policy-Relevant Privacy Reseach (PR2), colocated with @PET_Symposium
2025 in DC: https://pr2.technologypolicyworkshop.org

With Athina Markopoulou and Zubair Shafiq

😞

Exclusive: #NSF faces radical shake-up as officials abolish its 37 divisions | Science | AAAS
https://www.science.org/content/article/exclusive-nsf-faces-radical-shake-officials-abolish-its-37-divisions

a student interrupted the start of my lecture today to say goodbye bc their visa was revoked and they needed to leave the country immediately. great job we’ve done everyone