Jenda_
- Karma
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- July 10, 2019 (7y ago)
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Sysadmin and hardware developer from Prague, CZ. I have created a weather radar worth the 21st century and now we have a startup for this. Our latest product demo: https://www.youtube.com/watch?v=JU2z4H_ELus
https://jenda.hrach.eu/
For a cool example (deanonymization), see https://words.filippo.io/dispatches/whoami-updated/ (discussed at time: https://news.ycombinator.com/item?id=34301768). Someone has crawled public keys from GitHub (tbh I was…
+ making you empty your water bottle, and then on some airports there is no option to fill it afterwards (e.g. only hot water available in the toilets and no drinking fountain)
And some others. https://en.wikipedia.org/wiki/Quotation_mark#Summary_table
Oh, OK, I didn't think about lockdown mode, just a regular rootfs encryption. I still use X, as Wayland does not seem to implement all the features I'm using (but it's improving, so I expect I can go to Wayland in a few…
Some window managers, such as Fluxbox, support "tabbed windows". You can group windows into one "superwindow" and then switch these in a titlebar. Maybe this is what the GP meant? Screenshot:…
> The lack of hibernation with an encrypted system is an annoying problem, though. I don't understand. Hibernation to an encrypted swap partition (and even to a swap file on an encrypted rootfs) works normally. > Not…
> They killed at least 561 people I don't know anything about this case, but "561 deaths have been reported in connection to" does not mean they were all indeed "caused by". They may have reports of anyone who died…
The GP talked about nose tape (I guess nasal strips), not mouth tape. I personally use: - better breath strips from aliexpress - a 3D print similar to https://noson.eu/
> But in czech language word for Bohemia region is "Czechia" (there is no Bohemia). No. Bohemia is Čechy, Czechia is Česko. Yes, they are sometimes confused, and maybe people are unhappy with Česko because it's just too…
"habanero eardrum" is actually less than 4 bytes -- let's say 12 bits for a common word (eardrum) + 16 bits for an uncommon word (habanero). If it were 16 bytes, the other options from the same 16-bytes space would be,…
Why is there AFAIK no tutorial on how to steal the "app token" (sorry, I don't know the proper term) from Thunderbird or other mail clients?
Because the old algorithm only endangers the communication and the remote device (and this may even not be the case, as such an old device should not be exposed to the world), while the old client may compromise…
> That screwdriver? It used to work when it was first invented and it will still work a thousand years from now. Maybe it did not and will not -- old screwdriver is probably flat blade, now people use Philips or…
> That kind of attitude is why Windows continues to dominate the desktop market. On the other hand, macOS is also pretty common on desktops and they don't honor backwards compatibility very much.
Maybe try to have a look at it as permutations: the mapping "hex of the hash" → "its actual hash" is a (presumably random) permutation. And it's quite probable that such permutation has a fixed point:…
> because optical attenuation rises exponentially with length I believe the attenuation is stated in dB/km, therefore rises linearly (or even logarithmically if you look at it from the uncommon energy-wise point of…
If I understand this correctly, the paper only shows a particular attack of complexity 2^102. Someone may find a different attack with much lower complexity. That's the usual way how cryptography gets broken -- people…
I think Ubuntu has some kind of notifier in "tray". For me, I am subscribed to debian-security mailing list and update when something that is running on systems that I manage seems to be affected. > versus the more…
> Syscall hooking kernel root kits largely only vary in how exactly they hook the syscalls I don't understand how this survives major kernel upgrades. I have problems keeping out-of-tree modules working, intentionally.…
The malicious weblink can be an advertisement, or a legit webpage that got compromised/XSS'd, or a formerly legit webpage whose domain has expired. (AFAIK this is pretty common) The email attachment may come from your…
The GP was talking about Linux desktop, you seem to be talking about Linux server.
There are many more files that will need this protection: - autorun and keyboard shortcuts of your window manager -- one can hook an evil command to Ctrl+C - ~/.mozilla -- you can add arbitrary javascript to your…
Of course - the point is not to get the home folder owned. There is no reason why Evince/Okular or mpv (to name a few apps which handle files with complex formats from untrusted sources) should have the right to access…
> attaching a compromised PDF This means either: - a 0day, which would require the AV to have a PDF parser better than the standard document viewer, and the ability to sense that this PDF is "weird" -- I would expect AV…
> Two, because a genome is > 700MB, so it won't fit on a single disc. I would hope it compresses well (lots of repeating stuff), though I have no practical experience.