Looks like the #wifi #tracking #algorithm based on #signal is back: https://hackaday.com/2023/01/26/tracking.. It appears the #research is actually #published this time. Looking at the #images at least it looks quite #accurate - scary, given #wifi is *everywhere.*
I suspect #mastercard are #overstating the #security of their #creditcards by stating that they are #secure against #quantum #attacks , given that there is no known #algorithm to #secure agaisnt these #attacks https://hackaday.com/2022/10/25/masterca.. I suspect a #time -based or #mutating #onetimepad could be the way forwards to #secure against such attacks. I did come up with an #algorithm many years ago... But never pushed it.
Very cool, #stablediffusion being used as quite an #effective #image #compression #algorithm https://matthias-buehlmann.medium.com/st.. It basically relies on the fact that #images important to #humans are basically #composed in very #similar ways.
Very cool #introduction to #qr #codes https://typefully.com/DanHollick/qr-code.. Much #simpler than I thought they would be! I guess all a #vision #algorithm has to do is #detect the #patterns - and then it can go from there.
Interesting #article on using an #algorithm to #divide the #uk by #population https://shkspr.mobi/blog/2022/09/running.. It seems like #scotland would lose a lot of #votes for #uk #parliament , which might be a good thing.
Pretty cool #compression #algorithm for a #fixedwidth #dictionary to be used on a #gameboy http://alexanderpruss.blogspot.com/2022/..
Very cool #article on how #telegram created a #backdoor for their own #crypto #algorithm https://words.filippo.io/dispatches/tele.. Their #server could #secretly #read all #encrypted #communications without being detected! Damn!
This is a super cool #homebrew #image #compression #algorithm and #implementation https://phoboslab.org/log/2021/11/qoi-fa.. As the #hsckernews #comments point out, this is a really great achievement in #simplicity and #performance https://news.ycombinator.com/item?id=293..
Just a #reminder that #sorting can be super easy (in terms of #algorithm #complexity ): https://arxiv.org/abs/2110.01111 Of course, it's not that #efficient ... But there could be a lot of #opportunity to run it in #parallel or make #domain specific #shortcuts ... As the #hackernews #comments point out, it's been #discovered many times before: https://news.ycombinator.com/item?id=287.. Could be really fun to take a look at this at a later date!
I'm *really* sympathetic to reserving the right to #unpublish #articles slurped up by some #algorithm - especially a business making #profit from your #content ! https://shkspr.mobi/blog/2021/09/opting-.. #turnitin should not be able to store this material indefinitely without the #copyright holder's #permission ... Maybe the #universities waiver their rights, maybe the #students waiver their rights, but #blog #writers never opted into their #service !
@barray on Thu Aug 19 00:10:40 UTC 2021 said: &eAnd now the #source #code is out there for generating your own #csam #hash #collision that can fool #apple 's #detection #algorithm https://github.com/anishathalye/neural-h.. Apple claim it will be impossible to figure out what #vector they are using to trigger detection, but it's only a matter of time before somebody figures them out with a #database of #childporn (something the #uk #police for example store). So essentially #stateactors have the ability to #reverseengineer their vectors.Scratch that, it looks as if people are actually generating #hash #collisions by modifying an existing image to match a #hash https://github.com/AsuharietYgvar/AppleN.. #apple have really fucked up on the response to this one... They should at the very least put #csam on ice until #researchers have been given more time to figure this out. Also, claims that it's "not the final #version " is not good enough, especially when you invited people to #attack it!
@barray on Wed Aug 18 10:48:11 UTC 2021 said: &e#apple are claiming there is no issue with their #csam #detection #algorithm because #researchers are not using the "final version", despite being invited to #test it: https://www.vice.com/en/article/wx5yzq/a.. The lack of awareness on this is actually shocking... Even if researchers can't produce #hash #collisions on the #private version, #independent #nations can!Just a few days ago somebody replicated the #apple #csam #detection #algorithm https://github.com/AsuharietYgvar/AppleN.. Just now, somebody has successfully produced a #hash #collision - *exactly* what people were concerned about: https://github.com/AsuharietYgvar/AppleN.. Apparently it's even worse that this - different #hardware generates a different hash because of #float #precision ...
Just a few days ago somebody replicated the #apple #csam #detection #algorithm https://github.com/AsuharietYgvar/AppleN.. Just now, somebody has successfully produced a #hash #collision - *exactly* what people were concerned about: https://github.com/AsuharietYgvar/AppleN.. Apparently it's even worse that this - different #hardware generates a different hash because of #float #precision ...
@barray on Fri Aug 06 01:21:24 UTC 2021 said: &eThis is a great account from somebody who has dealt with a similar system to the one #apple plans to implement to detect #illegal #content on their devices: https://areoform.wordpress.com/2021/08/0.. Essentially you'll end up in a #newspaper, #accused of something awful, get #fired and lose access to your #bank ... All because some #algorithm nobody really cares so much about says so. Fuck.#apple is going much further: https://aardvark.co.nz/daily/2021/0806.s.. Apparently they now #scan user devices for #illegal #content and report to the #police . I can already imagine an attack where somebody sends/serves an illegal image for example, an #iphone #downloads it and then the scan #flags it. #aardvark points at this being a type of #fascism - but in modern times we see this actively being used in #communist Countries like #china ! It's clearly #authoritarian ...
I have seen the #xorshift #algorithm for #rng before, it seems to be pretty damn fast: https://thompsonsed.co.uk/random-number-.. It's not #crypto #secure and does suffer some #repeat problems: https://www.pcg-random.org/posts/xoshiro.. But in general it is pretty good and combined with a high #entropy source it could be relatively #random too.