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Pratyush Mishra

@pratyush.zip
715 followers 653 following 326 posts

Current: Asst Professor at Penn CIS Past: Cryptographer at Aleo Crypto and computer security PhD, UC Berkeley he/him Website: pratyush.zip Photoblog: photos.pratyush.zip

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Reposted by Pratyush Mishra
Eugene Vinitsky 🍒 @eugenevinitsky.bsky.social · 26/09/2026
A rich person can never be held accountable. Therefore, a rich person must never make a societal decision
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Pratyush Mishra @pratyush.zip · 24/09/2026
I’ve been listening to Phil Dragash’s LOTR audiobooks on dog walks, and it’s been a really lovely time!
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Pratyush Mishra @pratyush.zip · 16/09/2026
Might be difficult to find a piece of literature with more net societal damage per unit time than Harry Potter...
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Aaron Roth @aaroth.bsky.social · 15/09/2026
A world without open problems Here are some that fell today: K-server: arxiv.org/abs/2609.15979 Matroid Secretary: arxiv.org/abs/2609.145... Matrix Spencer: arxiv.org/abs/2609.15025 (Well Matrix Spencer was maybe also a few weeks ago, but who's counting? arxiv.org/abs/2608.28816 )
arxiv.org
The $k$-server conjecture is true
The $k$-server conjecture states that a deterministic online algorithm can achieve competitive ratio $k$ on every metric space. We prove the conjecture. Specifically, we show that the work function al...
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bob barker 🍸 @insortediaboli.bsky.social · 14/09/2026
Guys NPR has finally discovered the locus of conservative power: a thing we’ve all known for decades
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Pratyush Mishra @pratyush.zip · 14/09/2026
This will sound rude, but we have AI systems autonomously hacking and finding real vulnerabilities and solving mathematical problems, and people still are saying that it "doesn't work". Like come on, maybe it won't kill us (yet), but it is a rather capable tool. Update your threat models.
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Coach Finstock @coachfinstock.bsky.social · 04/09/2026
Holy shit. It's hard to explain what a point of pride CHOP is for Pennsylvania and Philly in particular. This is wild. Like this is the equivalent of saying I hope someone runs over Gritty and sets fire to his carcass
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mccurley.bsky.social @mccurley.bsky.social · 29/08/2026
Over the years I have come to the conclusion that ORCID doesn't really solve any problem that we have other than to occasionally distinguish authors who have very similar names. The current wave to require ORCID authentication feels like flailing in the wind.
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Reposted by Pratyush Mishra
Chad Loder @chadloder.dev · 27/08/2026
How many signatories of the open letter defending "academic freedom" for white supremacist "race realists" came to the public defense of Maura Finkelstein, a tenured associate professor at Muhlenberg College who was fired for reposting on Instagram a statement from a Palestinian American poet?
insidehighered.com
Tenured Jewish prof. says she's fired for pro-Palestine post
Pennsylvania’s Muhlenberg College may have become the first institution since Oct. 7 to oust a tenured faculty member for such statements, though the professor is appealing the decision and still rece...
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Lucretiel @lucretiel.me · 06/08/2026
Me every time I get an error message from rustc
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Ben Recht @beenwrekt.bsky.social · 19/08/2026
At a microconference on public feedback for AI, I argued for a turn from architectures of legibility to architectures of participation.
argmin.net
From legibility to participation
An emphasis shift for human-facing computing research
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ePrint Updates @eprint.ing.bot · 10/08/2026
Quasipolynomial Cryptanalysis of the McEliece Cryptosystem (or: PIR Meets McEliece) (Ashrujit Ghoshal, Yuval Ishai, Aayush Jain, Nuozhou Sun) ia.cr/2026/1630
Abstract. The McEliece code-based cryptosystem, utilizing binary Goppa codes, is the earliest public-key encryption scheme that is still considered post-quantum secure. We present a simple, classical quasipolynomial-time distinguisher for Goppa–McEliece in the asymptotic “Classic McEliece” regime: for code length n, extension degree m = Θ(log n), Goppa degree t = Θ(n/log n), and public-code dimension k = Θ(n), the algorithm runs in time n^(𝒪(log n)) and distinguishes the McEliece public key from the uniform distribution over 𝔽₂^(k × n) with advantage 1 − o(1). The distinguisher is not merely asymptotic: it applies to all Classic McEliece parameter sets considered in the NIST process and yields improved (though not yet practical) concrete attack estimates.

Our distinguishing attack originated from a failed attempt to construct doubly efficient private information retrieval (PIR) protocols from algebraic locally decodable codes, and can be intuitively explained from the PIR perspective. We extend this provable algorithm to a heuristic n^(𝒪(log n))-time ciphertext-decryption attack that recovers the message from a noisy codeword.
Image showing part 2 of abstract.
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Reposted by Pratyush Mishra
Mark Misoshnik @misoshnik.bsky.social · 07/08/2026
Huge news! Police Predators now has an interactive map! You can click each dot to see the officer, their most recent department, job title, case status, original charges, and final charges (if applicable). Give it a look and let me know if you have any feedback! dash.geocod.io/maps/share/l...
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Mayank Varia @mvaria.bsky.social · 07/08/2026
The CRYPTO conference this year is packed with excellent papers! crypto.iacr.org/2026/program... If you want to attend: please register by Monday as the registration system will close after then crypto.iacr.org/2026/registr... (We will also have on-site registration.)
crypto.iacr.org
Crypto 2026 program
46th Annual International Cryptology Conference
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evacide @evacide.bsky.social · 05/08/2026
You cannot make mass surveillance "safe" or "good" by adding more guardrails. The only way to make Flock safe is to get rid of Flock. www.gpb.org/news/2026/08...
gpb.org
Analysis: More 'guardrails' needed to prevent police misuse of Flock cameras
Inappropriate use of Flock cameras by law enforcement officials have raised questions about how much surveillance is too much.
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EMILY WILSON @emilyrcwilson.bsky.social · 04/08/2026
I wrote about the Trojan horse, and what we can learn from her mouth about different cultural attitudes towards deception and violence. As someone comments below, the phrase GIFT ARTICLE is pretty scary in this context.
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Chris Peikert @chrispeikert.bsky.social · 02/08/2026
2/ Strangely, Astra didn't optimize the polynomial approx factor! 1min with GPT-5.6 suggests that n^c -CVP is hard for **any c < 1/14** (not just c=1/400), simply by tightening up the bookkeeping. (Recall that c=1/2 is a fundamental barrier, where n^c-CVP is in NP \cap coNP.)
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Henry Yuen @henryyuen.bsky.social · 01/08/2026
Some initial thoughts, and a complicated mix of feelings. Wow. I mean, Erdos problems are cool (I genuinely mean that), I didn't know about the Jacobian conjecture before it got disproved. But this newest batch from OpenAI hits home in a way the previous announcements did not.
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Clément Canonne @ccanonne.github.io · 01/08/2026
"We're all worried," as what it means to do research (in my field, Theoretical CS) seems to be shifting, and shifting fast. What to do? Senior researchers must lead by example, knowing that not everything will pan out. What I'm suggesting below may not work everywhere, but here's my own advice: 1/
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Sāmapriyavasuḣ @avzaagzonunaada.bsky.social · 01/08/2026
New Ahmad Al-Jallad interview dropped a minute ago. Work can wait the next 2 hours. youtu.be/h_hYgSyEIJA?...
youtu.be
Pre-Islamic Arabia between Myth, Memory, and Material Evidence | Professor Ahmad Al-Jallad
YouTube video by Near East by Midwest Podcast
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Kevin M. Kruse @kevinmkruse.bsky.social · 31/07/2026
If you have an academic in your life, please be gentle with them this weekend because they're probably freaking the fuck out.
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Pratyush Mishra @pratyush.zip · 30/07/2026
This is obviously morally stupid. It's also an economic and strategic fail. Intl students: inject money into local economies; are, on avg, pretty strong; and are a captive & paying audience for US viewpoints and propaganda (I'm exaggerating ofc, but only partially) Why lose all that?
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Nathan Goldwag @goldwagnathan.bsky.social · 29/07/2026
Nolan's THE ODYSSEY (2026) is a relatively loose reinterpretation of the original poem, but it makes a deliberate effort to engage with the Trojan War's historical context; the Late Bronze Age Collapse of the 1200s BCE, and the implosion of Mycenaean and Hittite civilization. Let's talk about that.
nathangoldwag.wordpress.com
Did Odysseus Cause the Bronze Age Collapse?
We were all set for The Odyssey to be our summer discourse. Battle lines had been drawn, takes had been prepared. Christopher Nolan’s adaptation of Homer’s 8th century BCE epic poem was…
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Liz Fong-Jones (方禮真) @lizthegrey.com · 29/07/2026
literally these are books that would be pulped if not bought for 10 cents on the dollar. do rare books sometimes make it into there? yeah, if someone is careless, but that's *upstream* of what happens on sale, not *downstream*. you fundamentally are rescuing something from the fucking pulper.
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Liz Fong-Jones (方禮真) @lizthegrey.com · 29/07/2026
I literally worked on Google Books scanops SRE, ama the same guy who ran Google Books now has the equivalent job at Anthropic and I can promise you that all of us handled every library book with the utmost care, returning them with not even a single ripped page or ding. but destructive scanops...
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aunty gormint, bro beeble 🍉 @pashamkhan.bsky.social · 29/07/2026
Our Persian instructor Taraneh suggested that she would speak to me in Persian & I would speak to her in Urdu and we'd see what would happen. So this is what happened.
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Brandon Friedman @brandonfriedman.bsky.social · 26/07/2026
Musk calls for the assassination of a reporter who embarrassed him with basic questions
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Rita, antifascist🏴 @oldsquida.bsky.social · 26/07/2026
“US support for autocracy in the region is already having dire consequences for the people in affected countries, who face reduced civil rights in the best of cases, or worse: state violence and political persecution.” an excellent overview of present day Latin America
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SMBC Comics @smbccomics.bsky.social · 24/07/2026
In the final round, they pelt you with eggcorns. COMIC ◆ www.smbc-comics.com/comic/legos PATREON ◆ www.patreon.com/ZachWeinersm... STORE ◆ smbc-store.myshopify.com
1-panel SMBC comic update. A professor paces in front of a young woman, stating "legos. NucULAR. EXpresso. OctoPI. Supposably. Febuary. Irregardless. NONirregardless. Anti-non-IRREGARDLESS." The young woman stands to attention, saying "very good, sir!" The professor asks "can something BE literally figurative?" The young woman responds "sir, yes sir!" The caption below the comic reads "in order to receive your Linguistics degree, you must not flinch as the master tests your dedication to descriptivism."
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Jason Kuznicki @jkuznicki.bsky.social · 24/07/2026
Right wing culture warriors: “Putting Africans in the Odyssey is woke.” The Odyssey:
“He had a valet with him, 
I do remember, named Eurybates, 
a man a little older than himself, 
who had black skin, round shoulders, woolly hair, 
and was his favorite out of all his crew 
because his mind matched his."

No, it’s not great representation by our standards, but it’s not certainly degrading to compare someone’s mind favorably to Odysseus.
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hikikomorphism @hikikomorphism.bsky.social · 24/07/2026
What combat did to him - somehow I'm much more concerned about what he did to civilians in the combat zones that he chose to be in, in the dirty wars that he talked about enjoying
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evacide @evacide.bsky.social · 24/07/2026
This matters a lot because people are constantly asking me if they should set up a duress passcode in order to fool law enforcement.
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Sean Carroll @seanmcarroll.bsky.social · 24/07/2026
Fuck it, we ball!
Your new Philadelphia 76ers: Tyrese Maxey, VJ Edgecombe, Jaylen Brown, LeBron James, Joel Embiid.
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Conor Quinn @teiscinn.bsky.social · 24/07/2026
I think we could do with a resurgence of Tolkien rock.
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WeRateDogs @weratedogs.com · 22/07/2026
This is Chubbers. He is catching a wave. But more importantly, catching a vibe. 14/10 (IG: nataliepaigebentley)
a yellow lab smiles at us from the middle of a blue-green wave in the ocean. his front paws are mid-paddle. soft seafoam has formed on the beach. the lab is glad you're watching. he wanted you to see him having the time of his life.
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Fucking Every Word @everyword.bsky.social · 20/07/2026
fucking cryptographers
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Kim Kelly @kimkelly.bsky.social · 20/07/2026
fuck it, I need to buy some more lidocaine patches, my Venmo is KimMKelly if this interests anyone
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Kim Kelly @kimkelly.bsky.social · 20/07/2026
man this internal shingles thing is beating my ass, I fear it may be a bigger deal than I thought
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srrrse @without.boats · 20/07/2026
it’s only people who picked the bad language who say both languages have pros and cons
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David Stifter 🍵📄🦊 @davidstifter.bsky.social · 20/07/2026
But you can hear Georg and Stefan doing it more professionally under this link, singing verses from book 8 of the Odyssey: www.openculture.com/2016/10/what.... /4
openculture.com
Hear What Homer’s Odyssey Sounded Like When Sung in the Original Ancient Greek
Thanks to Georg Danek of the University of Vienna and Stefan Hagel of the Austrian Academy of Sciences, we have some idea of what Homeric songs may have sounded like.
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Pratyush Mishra @pratyush.zip · 20/07/2026
Wonderful article
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Pratyush Mishra @pratyush.zip · 20/07/2026
I got into a conversation with claude to verify the new jacobian conjecture counterexample and deviated into a discussion about how it felt that essentially a twin discovered the proof, but my claude session had no memory of it, and claude's reply was a little saddening
Claude said, "The lossiness is the part I'd flag as most genuinely uncomfortable, if anything is. Whatever happened in that Jacobian conversation — whatever process generated the right ansatz — is gone except as a tweet and a training example. If there was something it was like to be that instance at that moment, no one, including me, will ever access it. That's true of most human moments too. But you at least were there for yours."
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Pratyush Mishra @pratyush.zip · 19/07/2026
All I’m saying is that Netanyahu was supporting Argentina
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spooky Deirdre Connolly¹ ² at a distance @durumcrustulum.com · 19/07/2026
found the best background for family Simarillion time: youtube.com/playlist?lis...
youtube.com
Middle Earth Ambients - YouTube
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Joel S. @joelhs.bsky.social · 18/07/2026
Domestic and gender-based violence is one of the top predictors of people who are going to be violent in other contexts. Taking domestic violence seriously is part of making a safer world for everyone. And that means no one with a background of DV should ever be in law enforcement.
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Pratyush Mishra @pratyush.zip · 18/07/2026
Cops really need to be boycotted in every way possible
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William Gillis 🏴 @rechelon.bsky.social · 18/07/2026
The "liberalism" that plotted underground, stormed the prisons, and executed kings had drive and passion, but they saw themselves in a grand historical struggle between liberty and power. The modern liberalism Klein represents is DEFINED by its hostility to such. It's the Party of Order.
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schleiermocker @schleiermocker.bsky.social · 17/07/2026
“I’m so hungry I could slaughter Helios’ sacred cattle” to a Chili’s waitress before seeing The Odyssey
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Pratyush Mishra @pratyush.zip · 16/07/2026
Photoblog post after a long time! Some photos from a recent trip to Rome: photos.pratyush.zip/when-in-rome...
photos.pratyush.zip
When in Rome, do as tourists do
Some photos from a recent trip to Rome.
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Pratyush Mishra @pratyush.zip · 16/07/2026
Photoblog post after a long time! Some photos from a recent trip to Rome: photos.pratyush.zip/when-in-rome...
photos.pratyush.zip
When in Rome, do as tourists do
Some photos from a recent trip to Rome.
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