46 points by harsehaj 1 hour ago | 18 comments
netik 22 minutes ago
So this is a basically a shill advertisement ending in "Your AI Agents can avoid captchas if you pay us."

The last example is a false narrative, that captchas will only happen if the "browser looks suspicious". Systems like Altcha put an end to this argument. They don't care if the browser looks suspicious, only that the browser can perform a proof-of-work to get past a captcha designed to slow down the request rate.

When applied consistently, it will effectively block and slow down AI crawlers, which is what this company wants to promote.

gruez 3 minutes ago
>Systems like Altcha put an end to this argument. They don't care if the browser looks suspicious, only that the browser can perform a proof-of-work to get past a captcha designed to slow down the request rate.

That doesn't really work out in reality because bots are happy to wait 5 seconds or even 5 minutes for a PoW challenge to complete. Humans on the other hand will not, especially if they're on a mobile device with limited compute and energy.

CM30 37 minutes ago
The issue is that anything that becomes a standard here automatically becomes a target. If the same sort of captcha protects everything from Gmail to Twitter to Cloudflare and Facebook, then bot creators and spammers have a huge incentive to bypass it no matter what. And if we've learnt anything about spam, it's that pretty much every system we can think of can be bypassed or automated away.

The solution is really a ton of different captcha like systems and anti spam solutions, all unpopular enough that an attacker may not even bother targeting them. If an attacker needs to target a few thousand different captcha style setups to get their spam through, then many of them won't bother.

It's like centralised vs decentralised communication systems. If everything is centralised, a bad actor (like a government, corporation, criminal group, etc) can go after one target to control the narrative. If it's decentralised, then suddenly they have to go after dozens or hundreds of different targets, many of which won't cooperate with them.

epgui 1 hour ago
I thought half the point of captchas was to train vision models?
ben_w 21 minutes ago
This is in the article.

Indeed, half the point for reCAPTCHA: That how Google could justify supplying reCAPTCHA for free, but not why people wanted to use them.

hombre_fatal 39 minutes ago
As TFA points out, a major change is that bot traffic now comes from honest users via their LLM sessions, so you don't even necessarily want to block automated bots anymore.

The game is shifting to a better ideal: how do you design a service knowing that any user/request might be automated?

Especially in place of the historical, easy solution/hack where you have some sort of gate that, once passed, puts the user in some trusted low-scrutiny tier, like a forum's registration page.

It's a similar question to designing a system so that it's resilient to account take-overs. (i.e. The user was a trusted human until now, and now it's a spammer)

Example: on a forum, run new posts through an LLM to classify it as spam which is a magic solution we always wish we had (remember akismet?) but was too rudimentary.

wildzzz 18 minutes ago
You use API tokens for things intended to be machine to machine communication and captchas for things intended to be filled out by humans. Not every site or service wants automated input, even if it's being directed by a human. I dont want forums like HN just filled with a bunch of agents talking to eachother, where's the human connection?
ezst 12 minutes ago
They have served to train multiple generations of ANN and ML algorithms, in that, I think they've been a resounding success!
joehabeebs 23 minutes ago
The most recent variations that force you to click the boxes containing a certain artifact are incredibly frustrating and fail half the time. The large influx of AI-SEO optimized content being created makes me question CAPTCHAs efficacy today
matteo8p 24 minutes ago
Really nice read Harsehaj!

I haven't looked deeply into Web Bot Auth, but is identification tied to the agent (one identity per agent) or is it tied to the underlying person using the agent (the user)?

Hope that question makes sense, lmk if you need clarification

ra0x3 1 hour ago
TLDR: They're promoting a product they're working on with Cloudfare under the guise of it being an "open standard" [1]. Of course, in the docs, Step 1 is "Sign in with your Cloudfare account". Comes across a bit land-grabby.

[1] https://www.browserbase.com/blog/cloudflare-browserbase-pion...

thenthenthen 59 minutes ago
Omg. I am on various VPN’s and now and again Google Auth (for youtube) throws me a captcha. They are mostly unreadable, but there is an audio option… which is just insane and does not make any sense, anyone had that? It sounds like a recording of 300 people speaking at the same time in a call center while on various dosages of LSD
nosioptar 52 minutes ago
I've actually been in a call center with 300 intoxicated folk all talking at once. Its easier to understand than the recaptcha audio.

(Only a couple folks on hallucinogenics, most on various downers.)

moralestapia 54 minutes ago
I've got captchas that made me play a small game and I score like 3 points to go ahead, lol. For real.
willmadden 57 minutes ago
They give you that (or hieroglyphics) if you are using certain VPNs and don't leave a specific browser fingerprint.
prmoustache 14 minutes ago
There is a point where not leaving fingerprints becomes a fingerprint in itself.
visiondude 21 minutes ago
although not perfect for other reasons, a captcha made using phone motion and device attestation like prsn.you is a more challenging bypass for today’s agent environments
GL26 1 hour ago
Question that I've been wondering, can't attackers record human sessions and use it to attack a website to bypass cloudflare ?
bluGill 1 hour ago
They can. They have already figured out a lot of what cloudflare is looking for and have figured out how to bypass it. (according to the article) Which is why protection is trying something else. I suppose this is why every website wants me to login with my google account (which I never use)
randrus 58 minutes ago
Always reminds me of the forces that shape the mechanisms around the exchange of genetic information that powers evolution.

See: Red Queen by Matt Ridley.

throw7 54 minutes ago
Just today a website presented me a qrcode captcha. I threw up.
kgwxd 49 minutes ago
They're great for keeping humans out. Tried to setup Discord on a new phone yesterday. CAPTCHAs over and over again, just trying to log in. I uninstalled instead.
echoangle 1 hour ago
Oh my good I hate AI articles. Why do we have to make an interactive visualization for every single sentence? Thanks for showing me how distorted text is made in steps.

And being a cat and mouse game doesn’t mean the defenders failed.

qweqwe14 1 hour ago
> And being a cat and mouse game doesn’t mean the defenders failed.

It does though, in the end attackers always win. If something is a "cat and mouse game" then it's unwinnable by design from the defender side.

Sure, you can keep playing it if you feel like it, but at some point the attacker will be indistinguishable from a legitimate user and you will lose that fight.

echoangle 1 hour ago
By that logic, every security task is doomed to fail. Spam detection and antivirus are cat and mouse games too. I wouldn’t say they fail just because they have to adapt over time.
cute_boi 31 minutes ago
It has failed because of these company like browserbase and hackers who hack smart device and TV's for residential proxy.
jmclnx 1 hour ago
They have been around that long ? Does not seem so but the timing could be correct probably because the sites I went to had no need for CAPTCHAs until AI came around.
Zak 1 hour ago
The name wasn't invented until 2003, but yes.

Guestbooks, contact forms, signup pages, and the like started receiving automated abuse approximately five minutes after they were invented. It didn't take long after that for people to start including a question they expected to be easy for a person and hard to automate with a script.

What's relatively new is CAPTCHAs merely to browse a site. There are few faster ways to get me to close your site, and maybe send you an unfriendly email.

nosioptar 41 minutes ago
My first guestbook asked Hagar or Roth. Answering correctly got your message added to the book. Answering Hagar got you sent to an infinite redirect loop for being either a bot or a moron.
code_duck 1 hour ago
So in the past few years? Oh dear, no. Captchas have been in common use for much longer than that. reCAPTCHA has been around almost 20 years.
JohnFen 1 hour ago
They were introduced in 1997, although I personally didn't start seeing them until a couple of years later.
zuzululu 1 hour ago
so whats the solution then? get people to turn on their camera and hold up 15 fingers ?
fusslo 35 minutes ago
it sounds like the article & company are building identity based on fingerprinting/cross-domain behavior. Inferring at multiple levels, including cloudflare's

It's just more identity verification afaict

ranger_danger 1 hour ago
throwawayffffas 1 hour ago
The solution is login and paywalls.
kgwxd 43 minutes ago
That's crazy. People aren't going to pay to be tracked and have ads shoved in their faces! The economy would collapse!