this post was submitted on 19 Jul 2024
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Bots can now solve CAPTCHAs better than humans

https://www.youtube.com/watch?v=IWUHv3S8JVI

#tech #video

@[email protected]

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[–] [email protected] 34 points 3 months ago* (last edited 3 months ago) (3 children)

I work in a related space. There is no good solution. Companies are quickly developing DRM that takes full control of your device to verify you're legit (think anticheat, but it's not called that). Android and iPhones already have it, Windows is coming with TPM and MacOS is coming soon too.

Edit: Fun fact, we actually know who is (beating the captchas). The problem is if we blocked them, they would figure out how we're detecting them and work around that. Then we'd just be blind to the size of the issue.

Edit2: Puzzle captchas around images are still a good way to beat 99% of commercial AIs due to how image recognition works (the text is extracted separately with a much more sophisticated model). But if I had to guess, image puzzles will be better solved by AI in a few years (if not sooner)

[–] [email protected] 20 points 3 months ago (2 children)

I love Microsoft’s email signup CAPTCHA:

Repeat ten times. Get one wrong, restart.


iPhones already have it

Private Access Tokens? Enabled by default in Settings  > [your name] > Sign-In & Security > Automatic Verification. Neat that it works without us realizing it, but disconcerting nonetheless.

So, the spammers will need physical Android device farms…

[–] [email protected] 17 points 3 months ago* (last edited 3 months ago) (1 children)

More industry insight: walls of phones like this is how company's like Plaid operate for connecting to banks that don't have APIs.

Plaid is the backend for a lot of customer to buisness financial services, including H&R Block, Affirm, Robinhood, Coinbase, and a whole bunch more

Edit: just confirmed, they did this to pass rate limiting, not due to lack of API access. They also stopped 1-2 years ago

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

No way!! Can’t find anything about it online - is this info by the way of insiders? Thanks for sharing, would have NEVER guessed. Not even that they’d have to use Selenium much less device farms.

[–] [email protected] 4 points 3 months ago

Yup insider info they definitely don't want public. Just confirmed the phone farms were to bypass rate limit, although they do use stuff like Selenium for API-less banks

[–] [email protected] 6 points 3 months ago (1 children)

Oh my god. I lost my fucking mind at the microsoft one. You might aswell have them solve a PhD level theoretical physics question

[–] [email protected] 3 points 3 months ago

Just noticed the screenshot shows 1 of 5.

So five wasn’t good enough… they had to double it. Do kinda respect that they’re fighting spammers, but wonder how Google does it with Gmail. They seem to have tightened then recently loosened up on their requirement for SMS verification (but this may be an inaccurate perception).

[–] [email protected] 3 points 3 months ago

I know some sites have experimented with feeding bots bogus data rather than blocking them outright.

My employer spotted a bot a year or so ago that was performing a slow speed credential stuffing attack to try to avoid detection. We set up our systems to always return a login failure no matter what credentials it supplied. The only trick was to make sure the canned failure response was 100% identical to the real one so that they wouldn’t spot any change. Something as small as an extra space could have given it away.