191–200 of 378 posts
There is a reason why people moved away from distorted text based captcha. We are basically at the point where computers are better at them then humans. https://www.usenix.org/system/files/conference/woot14/woot14... is a paper on the subject i think is really interesting However a surprising amount of text based captchas can be solved in a few line shell script of, using imagemagik to convert to greyscale, dilate an…
I’ll never forget spending the evening of the 2016 election on /pol/
What happened?
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That's kinda what every major captcha distributor does already! Even before captcha is being served your TLS is first fingerprinted, then your IP, then your HTTP2, then your request, then your javascript environment (including font and image rendering capabilities) and browser itself. These are used to calculate a trust score which determines whether captcha will be served at all. Only then it makes sense to analyze…
Would it be possible to serve a fake fingerprint that appears legitimate? Or even better mimic the finger print of real users who've visited a site you own for example?
There is a reason why people moved away from distorted text based captcha. We are basically at the point where computers are better at them then humans. https://www.usenix.org/system/files/conference/woot14/woot14... is a paper on the subject i think is really interesting However a surprising amount of text based captchas can be solved in a few line shell script of, using imagemagik to convert to greyscale, dilate an…
Just because you can technically crack them doesn't mean they're useless. There's a significant amount of time, skill and effort that went into the solution from this post, and the end result doesn't generalize well (you'd have to start all over for a different kind of captcha). The vast majority of spammers would not be able to replicate this; those who do would either make money legitimately, or focus their skills…
Eh? They just need to buy their software from someone that can. I would say many of the malware and spamware isn't created by every individual deploying it, but instead vendors that got good at it and decide to make revenue by licensing out their software to other bad actors.
> The official TensorFlow-to-TFJS model converter doesn't work on Python 3.12. This doesn't seem to really be documented. > TensorFlow.js doesn't support Keras 3. I tried getting into some casual machine learning stuff a few years ago and more or less gave up because of stuff like this. It was staggering how many recent tutorials were already outdated, how many random pitfalls there were, and how many "getting starte…
As someone who has been working in ML for years, I can only recommend to stay away from anything recent. Grab an old bayesian statistics textbook and learn the fundamentals, then progress to learning the major frameworks like Pytorch. Try to write every part of a CNN, RNN and Transformer architecture and training pipeline yourself the first time (including data loaders, but maybe leave out CUDA matrix kernels). Stay…
I wasn't a very active 4chan poster to begin with, but when they introduced this awful CAPTCHA, and later the 300s countdown before making the first post, I completely lost interest in using the website. Anonymous boards were supposed to be low-friction, but now 4chan is one of the most user-hostile social media platforms around. It takes a special kind of dedication to post there, which I seriously doubt helps the q…
> 300s countdown I don't get why they added that nasty "feature" to the post form, it really discourages you to post(maybe it's because they want to sell you their 4chan pass), I don't understand why 4chan is still active
There is A LOT of ban evasion on 4chan. If you have a dynamic IP address from your ISP, you just spam/derail threads with personal crusades/whatever until you get banned, reset your router and repeat.
This countdown increases the cost of ban evasion, since you can't get right back in to continue. Everyone on your targeted board/thread now gets at least a 15-minute respite.
They've also had to blacklist entire ISP from making any posts because some people are constantly ban evading on them. Especially mobile ISPs, where there's basically an unlimited amount of fresh IPv6 addresses available.
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They had a gigantic spam problem, captcha saved the site
then how does Reddit and Twitter work without such an obnoxious captcha? I find it hard to believe those sites get less spam. Or any other community.
That’s like spending a few hours, learning to take the lid off your septic tank.