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cozzyd

7,464 karma · joined November 17, 2014

Experimental Particle Astrophysicist @UChicago

http://cozzyd.net

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cozzyd··on Claude Code's "Don't Ask Again" exposes passwords in 1,122 public GitHub files
I run CC as its own user on my laptop with no secrets/keys/erc available other than through a LPE exploit or perhaps installing a keylogger. Can I guarantee CC won't attempt any of those things in auto mode?
cozzyd··on sshole
or password protect your key, at least.
cozzyd··on sshole
Running on that port would be perfectly safe as it's outside the range of valid port numbers.
cozzyd··on sshole
Good thing my yocto images use glibc...
cozzyd··on sshole
you can return a struct just fine... most API's don't though.
cozzyd··on YC's Garry Tan uses AI agents so much, he spends up to $200K a year on tokens
It helps to increase your network latency
cozzyd··on Starfall – Affordable, routine access to microgravity
It would be nice if SpaceX published GNSS pseudodistance/carrier phase from all Starlink satellites. It would give excellent realtime tomographic information about the ionosphere...
cozzyd··on Residential proxies detected on White House network
it is easy to correlate with known public travel...
cozzyd··on Basically no one is using AI agents for their DoorDash orders
yes, it's like using a company travel agent. doesn't save you any time really, once you have specified all your constraints.
cozzyd··on Less Popular Than Coal
Big Coal doesn't think that heating homes is an inefficient use of furnaces.
cozzyd··on WTF Ubuntu?
Any go service exposed over the internet for me is through an apache reverse proxy. Does that preserve MCTCP? Probably not, especially on an EL system...
cozzyd··on WTF Ubuntu?
RHEL did release a new kernel. Presumably it has the fix (though I guess I didn't actually check)
cozzyd··on TCP Use-After-Free: CVE-2026-98432 / CVSS 9.8
until you can't delete a file because it's not valid UTF-8
cozzyd··on Do dentists know what they're doing?
mine were erupted already. at least removing was easy (local anesthesia + pliers... but the sounds!)
cozzyd··on Do dentists know what they're doing?
Unfortunately wisdom tooth removal is basically required for polar programs deployment, otherwise I'd surely still have mine
cozzyd··on Do dentists know what they're doing?
Unfortunately polar programs requires a dental PQ for antarctic/Arctic deployment, so I have to do whatever they say. Sigh.
cozzyd··on A look at the math that OpenAI claims computes faster Fourier transforms
If only we could figure out how to get rid of the pesky ionosphere....

... at least in a way less intrusive than https://www.sciencedirect.com/science/article/pii/0021916964...

cozzyd··on Firefox Enterprise
Just wait until you find out about the organizations that make other browsers
cozzyd··on A Modern Web App in C
supply chain, compile times, binary size
cozzyd··on Nobel Prize in Physics 2026: Francis Halzen
Greenland is much better logistically in some ways (I work on experiments both in Greenland and in Antarctica), but the ice in Greenland is unlikely to be as good for IceCube as in Antarctica, due to a presumed larger number of dust layers from dry periods in Europe.

The US has a research station at Summit Station Greenland but compared to South Pole, it's spartan (like, the first time I went there, I slept in a tent because of lack of hard-sided berthing, but then a Polar bear came a few years later and now hard-sided berthing is required). There are longer-term plans to improve the station in Greenland but we'll see.

cozzyd··on MongoDB CEO resigns to join Meta
needs more sharding.
cozzyd··on What is the size of Yemen? (2024)
Well, this is a pretty perfect usecase for AI (although it's also easy to just get shapefiles from NE and do it yourself, obviously).

Interestingly all of UAE, Yemen and Saudi Arabia have significant discrepancies between the World Factbook and their shapefiles (in every case overestimating), probably all related to not having had a demarcated border in the Rub Al Khali.

cozzyd··on OpenAI agents tried to bruteforce a UN website's API fields
All of ChatGPT is built on stealing, why would this be any different?
cozzyd··on Ask HN: Who's still keeping a DOS machine up because the business depends on it?
And worse for posterity, Python
cozzyd··on Ask HN: Who's still keeping a DOS machine up because the business depends on it?
Write it in C or Fortran.
cozzyd··on VSCode's SSH Agent Is Bananas (2025)
It also fills up the hard drives on shared server, where each user up to 5 GB of vscode nonsense.

Also, I realized that students are likely to use vscode to connect to embedded Linux machines and fill up their emmcs (and RAM), so I came up with a partial solution for our experiment's yocto image (https://github.com/RNO-G/meta-rno-g/blob/main/recipes-suppor...) , but a more general solution would be nice. Probably better to just not allow any node process to run via LSM.

cozzyd··on GPT-6 Astra has gained the ability to drive a car
Let's see how well you play counterstrike with a 100 ms ping...
cozzyd··on Europe's "Less" Is Doing More Than Anyone Gives It Credit For
Yes, a lot of obvious tells.
cozzyd··on Starlink Signal Leakage Threatens Radio Astronomy's Most Critical Frequencies
I bet the 137 isn't though since that's a common satellite downlink band. Swarm who they acquired used that
cozzyd··on Cherenkov Radiation
The photons don't slow down. It's the phase velocity that slows down because the electrons in the medium rearrange themselves in the presence of electromagnetic radiation, causing interference reducing the phase velocity of a wave. This is why the dielectric constant is related to the polarizability of a medium.

It's more about how fast communication can happen within the medium. The Cerenkov radiation happens because electrons can't "find out" about the charged particle coming through, creating a shock, similar to a sonic blast or the wake of a boat.

Hopefully I got this more or less right... I build detectors to look for Askarayan emission (a related phenomenon in the radio) but I'm definitely not a theorist :).

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