Arvind Narayanan (@random_walker )

Arvind Narayanan



Bio Princeton prof. I tweet about digital privacy, infosec, cryptocurrencies & blockchains, AI ethics, tech policy, and academic life.
Location Princeton, NJ
Tweets 8,8K
Followers 39,9K
Following 187
Account created 04-12-2007 11:14:14
ID 10834752


Twitter Web Client : Just when you thought we've hit peak influencer: nytimes.com/2018/11/11/bus…
The whole business probably wouldn't exist if we had adequate enforcement of our truth-in-advertising laws. Let John Oliver explain it far better than I can: youtu.be/yim_ED6mVHY?t=…
HT Arunesh Mathur

Twitter Web Client : Let's suppose AI fails to live up to its expectations. No big deal some might say, but here are a few reasons why this outcome would still have profound impact on our lives. (Thread)

Twitter Web Client : When cryptographic software asks you to move your mouse randomly for key generation purposes, you don't have to worry about whether free will really exists. You just have to make sure your screen and mouse movements aren't being recorded.

Twitter Web Client : The science of cryptography relies crucially on exactly this viewpoint shift. Secret keys are modeled as random, not because we think the key generation process is physically random, but because it uses inputs that we think are unpredictable to the adversary. twitter.com/ArnuldOnData/s…

Twitter Lite : The Contact Hypothesis is a Mess: Thread
1/n
The Contact Hypothesis (hence, "CH") is an old idea in social psych: That contact between groups reduces prejudice. This was one central theme of Allport's 1954 classic The Nature of Prejudice, built on even earlier ideas.

Twitter Lite : Sometimes Twitter will send me a notification for a tweet from a zillion and a half years ago, and I'll have a moment of supreme confusion. twitter.com/random_walker/…

Twitter Web Client : Here's the deal, blockchain boosters. We know you're desperately pushing "X on the blockchain" ideas. If you're trying to convince Walmart it needs blockchains to track avocados or whatever, be our guest. But if you're messing with critical infrastructure, you've crossed a line.

Twitter Web Client : An important report on voting security by the National Academies has a succinct section explaining why blockchains and voting dont mix. Worth a read, on page 103. people.csail.mit.edu/rivest/pubs/NA…

Twitter Web Client : The New York Times published an amazingly irresponsible op-ed calling for blockchain voting, and election security experts responded with a giant facepalm. Here's why. Let's start with this roundup of opinions from people who've actually studied the topic: vanityfair.com/news/2018/08/s…

Twitter Lite : Tried the GDPR data export from Spotify. By default, you get like 6 JSON files with almost nothing. After many emails and complaining and a month of waiting, I got a 250MB archive with basically EVERY INTERACTION I ever did with any Spotify client, all my searches. Everything.

Twitter Lite : Mireille Hildebrandt Thanks for your interest! Hard to tell without more info, but broadly: if there’s a technical analysis or measurement component then it's probably a good fit, but a traditional law or policy paper would be less relevant even if it discusses a technical topic. Hope that helps.

Twitter Lite : After 5 years of work on ECDSA threshold signatures and advocating for their use in cryptocurrencies (w/Arvind Narayanan,Rosario Gennaro), there's now significant adoption interest.

Sign up here for a mailing list where people can pool efforts and collaborate: groups.google.com/forum/#!forum/…

Twitter Lite : The website and Call for Papers are now out. We hope to grow the workshop again this year freedom-to-tinker.com/2018/10/31/the… twitter.com/inplaintext/st…

Twitter Web Client : Journalists posed as 100 Senators to run ads on Facebook. Facebook approved all of them.

Facebooks response—as usual—is to hope that outside groups will clean up its mess. Would the business model even be viable if Facebook didnt externalize its costs? news.vice.com/en_us/article/…

Twitter Web Client : “Was this an Ad?!”: An Investigation of Paid Social Media Endorsements medium.com/@aruneshmathur…
Given what we found, we think social media platforms must add features to prominently disclose paid content in a standardized way and ensure that they are actually understood by users.

Twitter Web Client : If you personalize based on viewing history, targeting by race/gender/ethnicity is a natural emergent effect. But a narrowly worded denial allows companies to deflect concerns. Journalists: when dealing with machine learning systems, you need to up your game. twitter.com/IndieWire/stat…