I remember trying to use 4chan once and i couldn't even pass through the captcha.
I remember using it before it had a captcha
Breaking the 4Chan CAPTCHA
121–130 of 378 posts
Re: Breaking the 4Chan CAPTCHA
#122Earlier quoted context omitted.
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…
> there are other options that pay much better than spamming Are there? Say you've got a felony record and can't get a legit AI/ML job at eg OpenAI/anywhere. What would you do instead? most of the options I can think of involve getting paid for doing things that are basically spam if you zoom out enough.
There's plenty of mischief potential with "deepfakes".
Re: Breaking the 4Chan CAPTCHA
#123Earlier quoted context omitted.
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…
> there are other options that pay much better than spamming Are there? Say you've got a felony record and can't get a legit AI/ML job at eg OpenAI/anywhere. What would you do instead? most of the options I can think of involve getting paid for doing things that are basically spam if you zoom out enough.
How many people are there like that, and how much damage are they collectively likely to do? If you're a random spammer, how hard will it be to hire that person? Again, not aiming for impossibility, just reducing the damage.
Re: Breaking the 4Chan CAPTCHA
#124There 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…
So, I do this type of AI development for solving CAPTCHAs.
I can't get any real jobs that pay me for my more advanced skills. My primary sins were going to a second/third-tier university and some performance concerns in a portion of my previous roles due to divorce and burn-out. I make $80k/year in government IT, and $30-150k/year as the "AI" guy in a small 2-5 person group that offers a CAPTCHA-breaking API.
The spammers aren't the ones replicating this. They just pay B2B rates (combo of SaaS + Consulting, depending on client needs) to help them remove the roadblocks.
Re: Breaking the 4Chan CAPTCHA
#125I've built 3 iterations of captcha solvers for that crappy website based on https://github.com/drunohazarb/4chan-captcha-solver/issues/1 . The only thing I've learned along the way is that it's mostly pointless outside of a "learning" exercise, since they'll change the captcha (in terms of letter count or the entropy background). Initially, it was 4 characters with pretty obvious background, then it turned to 5, then…
This project was really my first decent introduction to computer vision and machine learning (along with that of those who helped me in various ways; none of them desired to be credited here other than the guy who collected some of the data for me.) It was definitely a successful learning exercise, and it's made me more confident tackling some other problems I've had in mind for awhile.
To help you out if you're interested:
- a smeared gaussian in one axis and another in another axis can really help segmenting chars, finding lines of text in OCR
- You can unshear chars using the Radon or Hough transform as a basis to understand the angle
Went through MNIST a few weeks ago and I agree it's interesting!
Re: Breaking the 4Chan CAPTCHA
#126Earlier quoted context omitted.
This project was really my first decent introduction to computer vision and machine learning (along with that of those who helped me in various ways; none of them desired to be credited here other than the guy who collected some of the data for me.) It was definitely a successful learning exercise, and it's made me more confident tackling some other problems I've had in mind for awhile.
To help you out if you're interested: - a smeared gaussian in one axis and another in another axis can really help segmenting chars, finding lines of text in OCR - You can unshear chars using the Radon or Hough transform as a basis to understand the angle Went through MNIST a few weeks ago and I agree it's interesting!
I am always interested! Thank you for the tips, I'll definitely research these.
Re: Breaking the 4Chan CAPTCHA
#127Does 4Chan also have bot BEHAVIOR detection (e.g. unnatural mouse movements)that google captcha has?
Yeah I had been under the impression that the point of captchas like this (and those "slide a puzzle piece" ones) weren't the solution to the problem as much as checking for human-like mouse movements.
Re: Breaking the 4Chan CAPTCHA
#128There 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…
Makes me wonder what comes next. Could we create a forum where every member must do a 15 minute video interview with a moderator? I know this "doesn't scale" but I think it could make for a funny gimmick.
Re: Breaking the 4Chan CAPTCHA
#129There 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…
Makes me wonder what comes next. Could we create a forum where every member must do a 15 minute video interview with a moderator? I know this "doesn't scale" but I think it could make for a funny gimmick.
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Re: Breaking the 4Chan CAPTCHA
#130I wonder if it would be better to pretend to have a captcha but really you are analysing the user timing and actions. Honestly I half suspect this is already going on.
If you wanted to go full meta "never go full meta" you would train a AI to figure out if the agent on the other side was human or not. that is, invent the reverse turing test. it's a human if the ai is unable to differentiate it's responses from normal humans responses. as opposed to marketing human responses.
Well now I have to go have a lay down, I feel a little ill from even thinking on the subject.