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AI bots now beat 100% of those traffic-image CAPTCHAs (arstechnica.com)

submitted 2 weeks ago by [email protected] to c/[email protected]

156 comments fedilink hide all child comments

Anyone who has been surfing the web for a while is probably used to clicking through a CAPTCHA grid of street images, identifying everyday objects to prove that they're a human and not an automated bot. Now, though, new research claims that locally run bots using specially trained image-recognition models can match human-level performance in this style of CAPTCHA, achieving a 100 percent success rate despite being decidedly not human.

ETH Zurich PhD student Andreas Plesner and his colleagues' new research, available as a pre-print paper, focuses on Google's ReCAPTCHA v2, which challenges users to identify which street images in a grid contain items like bicycles, crosswalks, mountains, stairs, or traffic lights. Google began phasing that system out years ago in favor of an "invisible" reCAPTCHA v3 that analyzes user interactions rather than offering an explicit challenge.

Despite this, the older reCAPTCHA v2 is still used by millions of websites. And even sites that use the updated reCAPTCHA v3 will sometimes use reCAPTCHA v2 as a fallback when the updated system gives a user a low "human" confidence rating.

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[–] [email protected] 7 points 2 weeks ago (3 children)

Great, so now can I get an add-on to my browser that skips these?

[–] [email protected] 7 points 2 weeks ago* (last edited 2 weeks ago)

As someone who can not decide if 3 pixels of a motorcycle counts as a correct square, I need this add on.

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[–] [email protected] 6 points 2 weeks ago

Well we trained them

[–] [email protected] 5 points 2 weeks ago

That’s suspicious - I can’t pass 100%. here’s a new captcha for you: make the user do 100 in a row

100% is ai
<50% is dumb “ai”
in between is a person

[–] [email protected] 4 points 2 weeks ago (2 children)

So...if CAPTCHA are already beaten by bots what's the point if it still exists ? to mock our weakness ?
In the old days CAPTCHA could do its job, but nowadays nah....even crawler/scrapper/meta bots can bypass it easily.
The real question is why do we as real humans still often fail to beat CHAPTCHA? Are we less human? Are we really robots in CHAPTCHA perspective ?

[–] [email protected] 6 points 2 weeks ago (1 children)

To train Google/Cloudflare's AI tools, and to double check against DDOS. That's it.

[–] [email protected] 4 points 2 weeks ago (1 children)

So now we're going to have AI training other AIs

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[–] [email protected] 4 points 2 weeks ago (4 children)

Pro-tip for webscrapers: using AI to solve captchas is a massive waste of effort and resources. Aim to not be presented with a captcha in the first place.

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[–] [email protected] 3 points 2 weeks ago

There is a Russian captcha solver bot called xevil that costs under $100 (I think, last time I looked) that has been able to solve nearly all captchas for years. You just have to supply it with relatively expensive proxy IP addresses because Google rate limits solve attempts.

So the title of this article has been true for a long long time. Capatchas are absolutely useless except against poor or uninformed script kiddies.

[–] [email protected] 3 points 2 weeks ago

we have trained them very well

[–] [email protected] 3 points 2 weeks ago (1 children)

Our long international nightmare is finally over!

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