Ethan Cecchetti's Avatar

Ethan Cecchetti

@ethancecchetti.bsky.social

Assistant Professor, PL-Security Researcher, and Bitcoin Unenthusiast at Wisconsin–Madison | Cornell PhD | Ultimate Frisbee player | Aspiring-to-be-more-avid cyclist Mastodon: discuss.systems/@EthanCecchetti Web: cecchetti.sites.cs.wisc.edu

133 Followers  |  193 Following  |  25 Posts  |  Joined: 23.11.2024  |  2.0004

Latest posts by ethancecchetti.bsky.social on Bluesky

every single person writing credulously about "elon will put people on the moon" should have to pin this post to their monitor

09.02.2026 22:11 — 👍 4724    🔁 1215    💬 51    📌 35

👏 Immigrantion 👏 improves 👏 everyone's 👏 lives! 👏

08.02.2026 17:33 — 👍 0    🔁 0    💬 0    📌 0
a brown wire-haired pup stands on a wooden deck in a grassy yard. he looks at us with golden eyes and his right ear flipped inside out. he has a pipe-shaped stick in his mouth, giving him the appearance of a sophisticated and dapper gentleman. just give him a deerstalker cap and a cloak, and he'd give Sherlock Holmes a run for his money.

a brown wire-haired pup stands on a wooden deck in a grassy yard. he looks at us with golden eyes and his right ear flipped inside out. he has a pipe-shaped stick in his mouth, giving him the appearance of a sophisticated and dapper gentleman. just give him a deerstalker cap and a cloak, and he'd give Sherlock Holmes a run for his money.

This pup found a stick shaped like an old timey pipe earlier today and has already solved three mysteries. 13/10

04.02.2026 21:59 — 👍 18950    🔁 3006    💬 316    📌 252
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Highlighting the speaker who stood in front of the Surprise mayor and told him to consider what the Mayor of Ohrdruf must’ve thought before he died by suicide: “He might have thought ‘how is this my fault I had no jurisdiction over this’ maybe he said ‘this site was not subject to local zoning.’”

04.02.2026 06:43 — 👍 8739    🔁 3821    💬 164    📌 793
The "Large boulder the size of a small boulder" meme. The Facebook post is from 27th January 2020

The "Large boulder the size of a small boulder" meme. The Facebook post is from 27th January 2020

Today is "Large boulder the size of a small boulder" day!

27.01.2026 13:03 — 👍 4699    🔁 1725    💬 76    📌 155

“This is not who we are.”❌

“I’m going to speak up and take action to make sure this is not who/what we continue to be.”✅

“We’re acting like [insert region/country/oppressive group outside the U.S.]”❌

“The U.S. has a long history of oppression, discrimination, and harm that informs the present.”✅

22.01.2026 23:55 — 👍 286    🔁 118    💬 3    📌 4

Let’s talk about abolishing ICE.

Very few people who say “abolish ICE” mean “abandon all immigration enforcement.” Rather, they mean “the structure of immigration enforcement is irretrievably broken and needs to be reorganized, just like we did 23 years ago when we created ICE.”
/1

14.01.2026 18:27 — 👍 5517    🔁 1249    💬 156    📌 203

The best long-running series (see quoteskeets)

14.01.2026 04:47 — 👍 258    🔁 50    💬 4    📌 1

the very, very old etymology of two computery terms...

09.01.2026 12:10 — 👍 19    🔁 9    💬 2    📌 2

The tails on since letters (like A) are going to make decent kerning really hard in the Celtic Script. Even in just "ABC" it's distractingly inconsistent.

The letters on the second font are a bit smashed together for my tastes, but I'm not sure that's as big a problem.

30.12.2025 15:07 — 👍 2    🔁 0    💬 0    📌 0
King of England on a checkerboard pattern tile floor

King of England on a checkerboard pattern tile floor

Y’all might not appreciate it, but it took him 87 moves and 14 hours to get here

26.12.2025 12:48 — 👍 8716    🔁 1291    💬 101    📌 62
Post image Post image Post image Post image

Year 1 data on congestion pricing in Manhattan…

* Vehicle traffic: -11%
* Foot traffic: +3.4%
* Storefront vacancy: -0.9%
* Pollution: -22%
* Revenue for mass transit: $548M

So YES this has been a huge success.

23.12.2025 14:00 — 👍 8846    🔁 2367    💬 92    📌 283
Reposted b

Bruno J. Navarro @brunojnavarro.b... 4d started / going

TechCrunch https://techcrunch.com

Microsoft CEO says up to 30% of the company's code was written by Al

29 Apr 2025 - Microsoft CEO Satya Nadella said that 20% to 30% of code inside the company's repositories was "written by software" meaning...

Next article

Hacker News https://news.ycombinator.com

Microsoft admits almost all major Windows 11 core features are broken

1 day ago - Except it's not totally terrible. What makes it terrible is the privacy invasions and the consent issues Microsoft has with its users, along ...

Followed by 

Endless Screaming @infinitescream... 1m ΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΗΗΗΗ H

Reposted b Bruno J. Navarro @brunojnavarro.b... 4d started / going TechCrunch https://techcrunch.com Microsoft CEO says up to 30% of the company's code was written by Al 29 Apr 2025 - Microsoft CEO Satya Nadella said that 20% to 30% of code inside the company's repositories was "written by software" meaning... Next article Hacker News https://news.ycombinator.com Microsoft admits almost all major Windows 11 core features are broken 1 day ago - Except it's not totally terrible. What makes it terrible is the privacy invasions and the consent issues Microsoft has with its users, along ... Followed by Endless Screaming @infinitescream... 1m ΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΗΗΗΗ H

Sometimes the scroll is startlingly on point.

22.12.2025 00:36 — 👍 1480    🔁 405    💬 14    📌 14
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“Most of us live off Hope”

Ever true 💔

14.12.2025 03:02 — 👍 227    🔁 69    💬 10    📌 4

Wins 2025 hands down

08.12.2025 18:17 — 👍 2675    🔁 561    💬 21    📌 5

There are four types of guys online. No exceptions.

07.12.2025 01:00 — 👍 7    🔁 2    💬 0    📌 0

Congrats! I have decided to be happy for you despite the existential dread it induces.

02.12.2025 01:58 — 👍 2    🔁 0    💬 0    📌 0

Gotta max out those bathrooms. Each one adds a TON to the sale price! No need to look at what's in them.

01.12.2025 21:50 — 👍 4    🔁 0    💬 0    📌 0

You're already writing your dissertation? But you were a new great student like...last month!

Oh no, am I getting old?

01.12.2025 19:22 — 👍 2    🔁 0    💬 1    📌 0
Offit told me that Kennedy is a "liar" and a
"terrible human being." I asked him to explain. "It doesn't matter what I say," Offit said. "He thinks the medical journals are in the pocket of the industry, he thinks that the government is in the pocket of the industry, he thinks I'm in the pocket of industry, and he's wrong." Offit continued: "If he has data showing he's right, then fucking publish it. He can't, because he doesn't have those data."
I asked Offit if he saw a way to reverse the public's rising distrust in science. "I don't think there is any way to regain that trust other than have the viruses do the education, and the bacteria do the education, and then people will realize they paid way too high a cost," he said.

Offit told me that Kennedy is a "liar" and a "terrible human being." I asked him to explain. "It doesn't matter what I say," Offit said. "He thinks the medical journals are in the pocket of the industry, he thinks that the government is in the pocket of the industry, he thinks I'm in the pocket of industry, and he's wrong." Offit continued: "If he has data showing he's right, then fucking publish it. He can't, because he doesn't have those data." I asked Offit if he saw a way to reverse the public's rising distrust in science. "I don't think there is any way to regain that trust other than have the viruses do the education, and the bacteria do the education, and then people will realize they paid way too high a cost," he said.

presented without comment

01.12.2025 02:28 — 👍 3653    🔁 1072    💬 86    📌 158

I actually thought this was @theonion.com before I looked more carefully at the post.

26.11.2025 02:40 — 👍 2    🔁 0    💬 1    📌 0
POND RULES:

No swimming, jumping or gallivanting.
Do not disturb the pond witch.
No fishing with dynamite.
Sacrifices to water gods on alternate Wednesdays only - NO EXCEPTIONS!
Taunt the crows at your own risk.
If a hand comes out of the water to beckon you, turn and walk away.
Do not feed the weretrout.
Is the water burning with cold unholy fire? Report it to the ranger!
They’re not ducks. Run.
Have fun!

POND RULES: No swimming, jumping or gallivanting. Do not disturb the pond witch. No fishing with dynamite. Sacrifices to water gods on alternate Wednesdays only - NO EXCEPTIONS! Taunt the crows at your own risk. If a hand comes out of the water to beckon you, turn and walk away. Do not feed the weretrout. Is the water burning with cold unholy fire? Report it to the ranger! They’re not ducks. Run. Have fun!

You know, I'm not sure I ever really read the Pond Rules at our local nature preserve all that closely before

25.11.2025 01:24 — 👍 6866    🔁 1231    💬 302    📌 109

Today’s xkcd made me cry.

In a good way.

xkcd.com/3172/

24.11.2025 23:46 — 👍 6514    🔁 1982    💬 36    📌 0

Take a look at El Goonish Shive (egscomics.com, created by @danshive.bsky.social). I've just realized I've been reading it for over 20 years, which is crazy, but says something.

24.11.2025 04:58 — 👍 2    🔁 0    💬 0    📌 0

"Veridian Dynamics. We’re the future of food, developing the next generation of food and food-like products. Tomatoes… the size of this baby, lemon-flavored fish, chickens that lay 16 eggs a day (which is a lot for a chicken), organic vegetables chock-full of antidepressants."

23.11.2025 21:04 — 👍 322    🔁 44    💬 17    📌 1
Preview
Cryptographers Held an Election. They Can’t Decrypt the Results.

The International Association for Cryptologic Research has used heliosvoting.org – my online voting system – for a number of years.

This year, a trustee lost their secret key. The election has to be re-run.

Below, a few thoughts that didn't fit in the NYT piece.

www.nytimes.com/2025/11/21/w...

22.11.2025 02:40 — 👍 121    🔁 40    💬 3    📌 3

Al odors are particulate.

So, like, if you smell shit, that’s shit in your nose, man.

21.11.2025 04:42 — 👍 545    🔁 22    💬 49    📌 4
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It's a revealing moment...

J.D. Vance welcomes a two-legged robot helping on the job site. But if that helper is a person named Jose, he calls it a threat. Same tasks, same productivity boost.

The inconsistency reveals this isn’t about economics.

16.11.2025 12:52 — 👍 8631    🔁 2889    💬 407    📌 160

The incredible shrinking attack on U.S. universities continues.

Cornell has signed an agreement—but unlike the UVA agreement, instead of pledging to follow the gov't's highly questionable July "guidance" on discrimination, Cornell simply agrees to hand it out to faculty as a "training resource"!

07.11.2025 17:32 — 👍 107    🔁 44    💬 4    📌 15

📣THREAD: It’s surprising to me that so many people were surprised to learn that Signal runs partly on AWS (something we can do because we use encryption to make sure no one but you–not AWS, not Signal, not anyone–can access your comms).

It’s also concerning. 1/

27.10.2025 10:38 — 👍 2876    🔁 1064    💬 43    📌 182

@ethancecchetti is following 20 prominent accounts