HNHacker News
TopNewBestAskShowJobs

jrexilius

1,059 karma · joined June 29, 2020

Architect, engineer, hacker, amateur hardware geek. Currently working on communications security problems. personal site: jasonrexilius.com
submissionscomments
jrexilius··on Graphene OS: a security-enhanced Android build
There are certain threat/risk models where having multiple profiles might be helpful (non-forensic examination by an offical at a securtiy screening kinda scenario). But you're right, it's nuanced, requires know-how by the user, and possibly a foot-gun for some caught unawares. NOT an easy problem to solve. Personally, as a user, I'd like the ability to be able to choose that option in the instances where I needed it, but it's likey a TON of work for a very small actual user community who needs it.
jrexilius··on Tiny Code Reader: a $7 QR code sensor
I love these. Kinda insane they got it packaged so cheaply.
jrexilius··on AI is killing the web – can anything save it?
When cryptocurrency first started getting attention (2010,2011-ish?) I was so excited that a potential micropayments system would come out of it and solve this problem. Sadly it did not go that way..
jrexilius··on I'm betting against AI agents, despite building them
The thing that sucks about it is maybe his english is bad (not his native language) so he relies on LLM output for his posts. Im inclined to cut people slack for this. But the rub is that it is indistinguishable from spam/slop generated for marketing/ads/whatever.

Or it's possible that he is one of those people that _realy_ adopted LLMs into _all_ their workflow, I guess, and he thinks the output is good enough as is, because it captured his general points?

LLMs have certainly damaged trust in general internet reading now, that's for sure.

jrexilius··on EU Commission refuses to disclose authors behind its mass surveillance proposal
The main flaw is the enforced duopoly of iOS/Android for everyones favorite personal surveillance assistant. The secondary flaw is centralized control over transport layer access (internet really isn't decentralized anymore). And the last flaw is proprietary hadrware that controls the OS and transport layer access.
jrexilius··on Returning to My Roots in Hardware
Perfect summary ".. there is still value to be found in creating things that serve humanity in the real world; our humblest three dimensions."

Great read and echoes my conversion from web software to wholistic-product (which includes hardware).

jrexilius··on CrowdStrike CEO cuts his voting power by 92% with unexplained gifts
Pump the stock up a bit after the "accounting errors"?.. Seems like the CEO is trying ot slip out the door before things crash?

https://finance.yahoo.com/news/crowdstrike-probed-over-32m-i...

jrexilius··on Show HN: I built a hardware processor that runs Python
Amazing work! Is the primary goal here to allow more production use of python in an embedded context, rather than just prototyping?
jrexilius··on Antiviral chewing gum to reduce influenza and herpes simplex virus transmission
That has to be one of the best comments I've read on here in a while.. a nice chuckle for the morning.
jrexilius··on Entropy Attacks
Forgive my ignorance on this but does his assertion that a CSPRNG is all you need after an initial truly random seed, hold up against theoretical quantum attacks? If not, then I could see the need for very large/fast sources of entropy for OTP uses and such?
jrexilius··on Show HN: Berlin Swapfest – Electronics flea market
We need one of these in Austin!
jrexilius··on Waterfox: Fast and Private Web Browser
Thank you for this, and for the project!

One feature request: as I have never dug into the internals I don't know if this is feasible, but long ago Firefox had a very simple extension that exposed a button that could disable javascript (without a reload of the whole page). It appeared to be native or built-in capability as it used to be a config option if I remember correctly. I have not found anything that works well in current firefox, perhaps it's not technically possible anymore? But being able to disable javascript, ideally on per-tab basis, is super helpful.

jrexilius··on Ask for no, don't ask for yes (2022)
This is a great way to frame it with the caveat that you've done a fair bit of homework to support your assertion. And the other thing I would add is context-aware time padding. The "deadline" should be adjusted to respect the bosses schedule AND the potential impact. i.e. if it could hit production, give them more time. If it can't easily be rolled back, give them more time, etc.

But in general, if you are an adult, competent at your job, taking initiative, and have spent a bit of time thinking through the second and possibly third order effects, this is great.

jrexilius··on My LLM codegen workflow
The first part of this, where you told it to ask YOU questions, rather than laboriously building prompts and context yourself was the magic ticket for me. And I doubt I would have stumbled on that sorta inverse logic on my own. Really great write up!
jrexilius··on Teen on Musk's DOGE team graduated from 'The Com'
So, in the context of the US, yes, those trends are reversing, so it is apropos to examine it (see article content). I am fully aware of the tendency of grumpy old people decrying the amoral youth, my point is that the degree of nihilsim seems qualitatively different than 70's burn-out, 80's goth, or 90's grunge, or what have you. It appears more like a kind of defeatism than rebellion (the more normal youth passtime). Who knows, maybe during the great depression the younger generation was in a similar place, don't know, not THAT old ;-) But it seems less a case of "those old peoples values aren't MY values" and more of a "there are no values" differnce than previous generatonal divides.
jrexilius··on Teen on Musk's DOGE team graduated from 'The Com'
Me to. I suspect its a combination of demographics and sub culture thing (I'm old, and out of the loop on a lot of pop culture and sub-variants). I have noticed a very high degree of nihilism and a sort of "morals are just a role you play in a game" kinda mentality with the younger crowd that looks and acts _very_ different to past generations though..
jrexilius··on U.K. orders Apple to let it spy on users’ encrypted accounts
So UK gov is demanding similar access as China? Not a good look for a supposed free democracy..
jrexilius··on Boom Supersonic to break sound barrier during historic test flight today
I really hope they are successful. So sad not to have this option for ocean crossing flights.
jrexilius··on More telcos confirm Salt Typhoon breaches as White House weighs in
Make that population of 3. I'm not a fan either. But I'm also realistic. I treat the phone as what it is: malicious spyware. But I realize that most people want the convenience and the safety (of sorts) of dialing 911 and getting the right dispatch..
jrexilius··on More telcos confirm Salt Typhoon breaches as White House weighs in
Thats not exactly true. The FCC911 and other government laws require the telcos to have access to location data and record calls/texts for warrants. The problem is both regulatory as well as commercial. It is unrealistic to expect the general public nor the government to go with real privacy for mobile phones. People want LE/firefighters to respond when they call 911. Most people want organized crime and other egregious crimes to be caught/prosecuted, etc. etc.
jrexilius··on Wishing for a more orderly disruption may misunderstand government reform
Jennifer is a smart, dedicated gal who has been working on this problem since the Obama administration. I _very_ briefly worked with USDS on the DoD-VA hand-off of medical records (the very early stages of trying to fix that train wreck), which had very clear bipartisan support at the time. It was not for lack of political will, nor severity of problem, nor through incompetence that the effort struggled. Most people, from the whitehouse to the hill, very much wanted veterans to stop dying or killing themselves on the waitlist. And yet, there was no smooth path. I saw a very brief glimpse of the problem and understand that there is a whole iceberg under the water line. She has been dedicated to the problem for years. I would listen to her and give her a whole lot of benefit of the doubt about the politics of it all, regardless of your political tribal affiliation. Some times you have to set othodoxy aside.
jrexilius··on A $1k Wheelchair
Insurance approved I think is the key differentiator.
jrexilius··on A $1k Wheelchair
This pretty much embodies why I love hacker engineering. Solving hard problems by itself is fun, making peoples lives better in the process makes it really worthwhile.
jrexilius··on Awala: The computer network on which humankind can rely
Have you considered leveraging steganography in the sneakernet transport layer? Maybe something like https://steganography.live/info
jrexilius··on Awala: The computer network on which humankind can rely
The challenge with out-of-band RF networks in certain situations is that they can be triangualted by a hostile power. In places like Ukraine, that can trigger indiscrimante artillery or rocket fire onto civilians, for example. In China that can get people disapeared. Sometimes sneakernet is safer and more secure.
jrexilius··on Ask HN: Device for Music and GPS
When you say "GPS" what do you mean? Offline maps? or do you mean tracking the location of the device (and kid)?
jrexilius··on ARRL IT Security Incident – $1M ransom
You are touching on my thoughts exactly. It seems everyone would come out better if the insurance company just paid for them to rebuild. I suspect that'd come out cheaper and it would maybe deter the attacks by making them worth less..
jrexilius··on ARRL IT Security Incident – $1M ransom
Why did they agree to pay the ransom? Such a small org it seems like they could rebuild the systems they needed for less than $1mil?..
jrexilius··on HID Remapper
That's the exact opposite model of what I built [1], because I view the phone as just as unreliable as desktop or laptop. Actually even less reliable, given my choice of workstation OS.

I went with a USB and BLE chip on the external side of my keyboard to connect to both workstation and phone to push the passwords, MFA, and encrypted text from the manager I built into the keyboard itself.

1: https://www.anomie.tech/products/anigma/ce/

jrexilius··on Fiber optic drone control beats any RF jammer
Yes, SPE could get you ~1km. https://electricui.com/blog/spe-sensor-node
← PreviousPage 2 of 8Next →