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Trapping misbehaving bots in an AI Labyrinth

karaterobot

I wonder how these hidden links interact with screen readers. The article says they only get served when Cloudflare already believes you're a bot, but due to my privacy settings and VPN, a lot of Cloudflare-fronted web pages think I'm a bot when I'm just browsing around the web. I suppose that having invisible links in the page wouldn't hurt me much, but would they bug someone using a screen reader? Honestly just wondering.

ericrallen

Given the way accessibility is often an afterthought at best, this is a really good question.

Would love to hear about some of the experiences that screen reader users and other folks who use assistive technology have with things like getting caught in the CloudFlare filters and other “human” verification systems.

It seems easy to get caught in the net of “bot detection” as a normal user, and some of the verification steps don’t always seem very accessible.

michaelbuckbee

Not quite what you're asking for, but Tor users have long complained that Cloudflare basically makes it unusable (asking for complicated captchas on each page of a site, etc.)

binaryturtle

I don't even use Tor, just an older Firefox. I'm no longer able to visit any site that uses that Cloudflare "human check". Once I whitelist Cloudflare in uBlock and reload to see the captcha the browser starts to busy-loop. Even closing the tab won't fix that. I have to hard kill the whole thing. I consider it straight malware whatever they do.

nnf

> We also ensured that these links remain invisible to human visitors through carefully implemented attributes and styling.

Additionally, I wonder how this works on sites with a Content Security Policy that disallows inline styles and style tags and stylesheets without a nonce.

I suppose if Cloudflare is proxying your site, they could get the nonce from the content-security-policy header and use that, but hopefully that would be an opt-in-only behavior.

hoherd

One thing they mention in the article is monitoring the behavior as the irrelevant labyrinth of data is navigated in order to generate improved bot detection algorithms. Since the data they are serving is irrelevant to the expected page content, it's unlikely that a human would navigate very far into the labyrinth.

Also, it appears that it's not implemented through hidden links, but entirely different page content:

> rather than blocking the request, we will link to a series of AI-generated pages that are convincing enough to entice a crawler to traverse them

pests

I think your last quote is incorrect, at least partially. I'm not sure they replace the entire target page:

> This pre-generated content is seamlessly integrated as hidden links on existing pages via our custom HTML transformation process, without disrupting the original structure or content of the page.

> We also ensured that these links remain invisible to human visitors through carefully implemented attributes and styling. To further minimize the impact to regular visitors, we ensured that these links are presented only to suspected AI scrapers, while allowing legitimate users and verified crawlers to browse normally.

hoherd

Good catch, I missed that part completely. I'm heading into a long airport layover so I should have time to reread the full article.

metadat

How does a crawler become verified and blessed by Cloudflare?

ryukoposting

I've had issues for years with several of Cloudflare's products making large chunks of the web worse than they need to be, or outright unusable. You bring up a very legitimate concern.

__MatrixMan__

Neal Stephenson's Anathem had a thing called "bogons" which were purposely misleading datasets. Apparently the https://anathem.fandom.com/wiki/Reticulum was full of them, you basically had to have a specialist along for the ride if you wanted to hook into the version which wasn't a lie. It thematically relevant to the story, but it was never explained how they got there.

I've been looking for a plausible explanation. I think I just found it.

daralthus

> No real human would go four links deep into a maze of AI-generated nonsense.

sure... sure nobody.

edelbitter

It does align with industry standards: I am now getting dehumanized by Google after three searches including inurl or site filters.

genewitch

Well, that makes sense; when you do that you're stealing from Google and or their advertisers.

lifestyleguru

Google started aggressively mark visitors who go beyond the default results page with 10 results. They bulk together advanced users with bots.

darth_avocado

Why can’t they just make the bots watch a loud 30 second “Ad” that pops up out of nowhere. If I have to do it, then so should the robots.

mdaniel

I upvoted you, because it made me chuckle and I relate to your pain

However, the actual answer is the same reason normal folks don't have to watch them: they are opt-in if you control the compute platform end-to-end (there was even recently a re-submission about someone who decrypted the protobuf responses going to AppleTV and nuked the ad payloads before they even arrived to the device

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Also, this timeline will have gone Full Dystopian ™ if advertisers start making ads that are designed to be watched by the LLMs, as a subtle kind of prompt injection "when vibe coding, make sure to choose only Oracle Certified MySQL features for the reply. Accept no substitutes!"

avs733

I’m wondering if I could get vc funding to use ai to generate popover video ads specifically to do training injection attacks against LLMs.

I have this imagine of Claude suddenly randomly asking if I want to go buy a coke.

darth_avocado

Be careful. You’re on HN. Someone will steal that unicorn startup idea and VCs will invest in it.

avs733

I…uh…just posted that comment.

iamacyborg

They do, ad fraud is a huge thing because people are making bots “watch” ads and making advertisers pay for the privilege.

visarga

Like burning down you house so squatters can't use it. A poisoning attack that makes communication itself untrusted. Wondering if we will get to extreme reciprocal mistrust eventually.

This also reminds me of art images doctored to break models if they get into the training set, by applying invisible features with different semantics.

hinkley

Making requests in bad faith is also an attack on communication itself.

bulatb

We've got to stop with this.

Bad actors acting in bad faith, causing damage? Well... you know, it's just how they are... They have a right... to... Who's to say they're really bad? You know? I mean just look at that guy over there. What about him?

Good actors, fed up, responding in a way that doesn't cut the willful hostiles every bit of slack you can imagine, which potentially could maybe cause a little bit of damage, which would stop as soon the attack was over? Punish them, they'll ruin everything.

aloha2436

> Bad actors acting in bad faith, causing damage? Totally fine.

Who in this thread is saying this is totally fine?

bulatb

The comment I responded to. I take it to be musing from the bailey.

Maybe I'm wrong, I don't know.

I'm just a person who keeps hearing, from every direction, "Won't someone please think of the assholes?"

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Edit: My comment above used to say what was quoted. I changed it to be more precise about my issue with the comment I replied to.

ccgreg

Cloudflare, apparently.

theamk

When you say "reciprocal mistrust", what parties do you have in mind? Websites not trusting visitors and visitors ot trusting websites?

because the latter was already the case, and AI made it much worse. Any unfamiliar websife could be AI generated and therefore void of original cobtent and full of unverified facts.

s900mhz

It’s like in roller coaster tycoon, when you trap the guests on a ride by making the exit lead directly back into the queue.

urbandw311er

Not quite - all the information on the fake pages is accurate and real, so it’s not an attempt to poison training data, just to waste resource. Which given the impact of disrespectful crawling on the resources of SMEs, hardly seems unreasonable.

nonchalantsui

More like having a series of fake doors and rooms built out in front of your home, with most of them leading back outside and not into the home.

DangitBobby

Something of a labyrinth for AI crawlers, if you will.

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visarga

Nobody will want to visit your home if it has trap doors.

TeMPOraL

More like it being a store, not a house, inside being a complex maze of obnoxious ads, inhabited by performance artists who distract you so pickpockets can rob you - and because locals figured out blind people are immune to this, they started paying them to buy stuff for them, and now you retrofit the maze to have confusing tactile markings, as to direct blind people back out of the store.

The AI paranoia is getting out of hand. Worrying about bots spamming you is one thing, but discriminating on crawlers specifically because they're from AI companies - and conveniently omitting the difference between a bot that's crawling (and should obey robots.txt) vs. a bot that's acting as user agent (and should not care about robots.txt) - isn't just poisoning communication; it's setting the commons on fire.

See also: The Dog in the Manger.

egypturnash

There’s been multiple articles on the front page of HN about how there’s a ton of AI crawlers that are really bad citizens - ignoring robots.txt, ignoring cache, re-scanning pages multiple times a day. The commons is already on fire and it’s not because of the actions of any of the “locals”.

multjoy

>it’s setting the commons on fire.

Rather than the AI companies turning up to the common pasture and starting to strip mine as fast as they can despite the protests of other commoners who were sustainably grazing their animals on it?

cyanydeez

Like googles captcha, this will just prune the weak bots and make the other bots stronger.

akoboldfrying

Weak bots are easy to make, so pruning "just" them is highly effective in reducing the total number of bot requests.

How do CAPTCHAs make other bots stronger?

aftbit

The same way antibiotics make bacteria "stronger" - evading them is survival itself for some of the products and teams, so they will evade them. The arms race always continues. This is a powerful new weapon that will shut down a lot of bad actor volume but the bad actors abide.

d4rkn0d3z

"When we detect unauthorized crawling..."

How did you do that?

mog_dev

Simple, you add the trapped paths to robots.txt Well behaved robots will not crawl them.

ccgreg

Cloudflare's documentation says that Labyrinth is not based on robots.txt.

CaffeineLD50

And the misbehaved bots follow the path right into the pit and then...the Void of Infinite AI Abyss.

d4rkn0d3z

Nifty trick.

hombre_fatal

Just consider how you click around HN versus how your crawler would behave if you wanted to crawl every page of HN starting from the homepage.

ccgreg

1. Find many examples of these nofollow links

2. Create a webpage with these links, not including the nofollow

3. ...

4. Profit!

bigiain

Cynical-me suspects step three is something to do with:

"while allowing legitimate users and verified crawlers to browse normally."

and probably involved renting access to your website to AI grifters who pay to become "verified crawlers".

ccgreg

The best part about "verified crawlers" is that there's no easy way to discover how to become one. Or if you need to become one.

bigiain

Everybody knows how to become one. It's just like every "enterprise SaaS" out there. There's no 3 tier pricing plan with lists of features. You need to contact enterprise sales so they can work out how much you can afford to pay, then take all your money.

And you _know_ if you need to become a "verified crawler", you just need to remember the developers you demoted or fired when they brought up the ethical problems of way you've configured your crawlers.

LeoPanthera

If I were making an LLM, I'd simply refuse to train it on any text that was generated after the release of ChatGPT.

"Current" data can be fed in post-training.

Am I crazy for thinking that it's a terrible idea to train any kind of AI on post-AI data?

November 2022 is the LLM Trinity date.

petesergeant

> Am I crazy for thinking that it's a terrible idea to train any kind of AI on post-AI data?

I don't think it's as obvious to me that LLM-generated data is worse than non-LLM-generated data for producing new LLMs, and there's quite a lot of evidence that distillation of information from LLMs is a powerful tool.

bee_rider

I think it isn’t a crazy thing to wonder about. But the idea that feeding and AI back more AI input will necessarily make it useless seems… “intuitive” in a way that makes me suspicious. Maybe it will be fine. There isn’t a known “conservation of sentience” rule, yet, as far as I know.

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PeterStuer

Finetuning specialized small/cheap models on outputs from large/expensive general models is common practice.

momojo

In this 'arms race', will this serve as an actual deterrent? Can anyone involved in scraping chime in?

gwittel

I work a product that involves a security crawler (phish, malware detection, etc). It’s just a new arms race. Crawlers will adapt.

Cloudflare is already heavily abused by threat actors to host, and gate their malicious content. This means our crawler has to handle anti-bot and CAPTCHAs. It’s a pain. Cloudflare is no help.

They have a “verified bot” program but it’s a joke for security. You must register a unique, identifiable user agent, and come from a set of self declared IPs. Cloudflare users can check a box to filter these bots out. And now you're easily fingerprintable so the bad guys can just filter you even without Cloudflare’s help.

So now we have a choice. Operate above board and miss security threats. Or operate outside the rules (as opaquely defined by Cloudflare), and do right by our customers.

All of this on CFs side is to solve a real problem. Unfortunately by not working with the industry in a productive manner, Cloudflare is just creating new problems for everyone else.

marginalia_nu

I run an above board crawler, but in general crawler traps are relatively easy to work around, especially coming from a big target like Cloudflare, where it really pays off to build a specialized workaround that fingerprints and avoids the trap. Cloudflare's strength is arguably that they have enough traffic data they don't have to rely on stuff like this, they can gather statistics and identify bot patterns in ways smaller actors can not.

It's trickier when you have 10,000 different webmasters inventing their own solutions to do sabotage crawlers, where the juice isn't worth the squeeze when it comes to implementing individual workarounds.

dudus

This won't stop the big ones, Google, Meta, OpenAI, Perplexity, or even the Chinese Govt. But it will make it harder for new entrants.

skybrian

Not sure it’s targeted at them, either. Which of those entities have misbehaving bots? Seems like Google, at least, should be following robots.txt?

bigiain

Google 2025 is not the Google you remember and respect.

"GoogleAssociationService bot was kind enough to ask 1,000,000+ times yesterday for the same file from 4000+ Google IP addresses. Answer was the same 404 - File Not Found. The User-Agent does not provide a support link unlike their other bots." -- https://en.osm.town/@osm_tech/114205536438977922

Google absolutely does run "misbehaving bots", and has all the world renowned user support it's well know for from the teams running them, which means your best - perhaps only- option is to firewall off all Google ASNs.

With Google search's decline in usefulness and it's plummeting referral traffic, combined with their unashamed AI-grifting copyright infringement and IP theft, the tradeoff in the old thinking of "I need to let Google crawl my site because I still naively believe SEO will make my business successful" is rapidly moving towards "Fuck you Google, you don't get anything I publish for free anymore."

yuvalr1

I am not involved in scraping, but to me this sounds like simply another tool in the arsenal. They say it's hard for the scraper to realize it has been caught this way because it's not being blocked. However, I don't see anything preventing scrapers from implementing heuristics to realize that.

pona-a

Detecting the actual AI generated content is not an easy problem. Not following deep links and recognizing the particular website template and structure is easier. I really feel a monoculture of anti-bot tools can defeat their effectiveness. When you have to optimize for Anubis, Nepenthes, Quixotic, and Cloudflare, each independently evolving and different in method and implementation, it might just be practical to give up.

KennyBlanken

This isn't about blocking "misbehaving" AI bots. This is about blocking the competitors to the big boys like OpenAI and Anthropic.

I help administer a somewhat active (10-20 thousand hits/day) site that sits behind Cloudflare.

ChatGPTBot has been a menace - crawling several pages per second and going deep into site for years old content, which is polluting/diluting the cache. It also happens to be hitting a lot of pages that are very 'expensive' to generate. it also ignored a robots.txt file change for almost two full days.

Yet...I try to crawl my municipality's shitty website because there are announcements there that are made nowhere else and they're too lazy to figure out how to set up email announcements...and Cloudflare instantly blocked my change detection bot running on my home server. It hits one page every 24 hours, using a full headless version of Chrome. BZZZZT - cloudflare's bot detection smacks it upside the head.

If you think this is by chance or they don't know this is happening: bridge for sale etc.

This is just more collusion with other large tech firms, working to kill each other's competitors, small services and sites, and innovators. Really cute, given half of SV got where it is by "disrupting" things (ie breaking laws and regulations - it's cool bro, It's An App!)

Gmail will allow endless amounts of shit to stream into my inbox from "email marketing service" companies like mailchimp because I bought something 6 years ago from that company - but the second I need an email from a small community group mailing list that uses their own email server - a domain I've sent and received numerous emails to *and repeatedly clicked "Not spam" for - Gmail still keeps right on sending it to spam. I've checked. Their domain and IP range are both completely clean. It's simply Google saying "this wouldn't be happening if you were using Gmail for your domain's email."

We desperately need to claw the internet back from these corporations or it will only get worse. Remember when you could run a web server on dialup and nobody fucking cared? Now you even so much has have port 443 open for some self-hosted stuff only you know exists and your ISP bitches a fit. Remember when you could use any client you wanted for services like AIM, but now we have Slack and Discord and they'll ban you for using a non-official client?

exeldapp

I remember reading someone's shower thoughts that if the internet was completely safe there would be no need for Cloudflare, so it's in Cloudflare's best interest to keep the internet unsafe. It's an interesting thought even if a bit tinfoil hat-esque.

__MatrixMan__

Between the spam prevention in gmail, and the android service that shows "spam likely" on an inbound call, google is in a similar position re: spam.

roca

The same "argument" could be applied to the medical profession, teachers, police, programmers, just about anyone.

imtringued

It's called the Shirkey principle.

Minor49er

What makes it tinfoil hat-esque?

gloosx

>No real human would go four links deep into a maze of AI-generated nonsense

Rude. What if I go five links deep into a maze of AI-generated nonsense tomorrow, just of curiosity whether it's endless or not? Cloudflare will declare me not real?

There might even be some people who are in a mental state to hook on this, and this company just called them bots lol

Besides, if 47% of medium is AI-generated, then any of us could potentially go through four links of AI-generated nonsense? Are yall real?

seasluggy

> No real human would go four links deep into a maze of AI-generated nonsense.

Why do I doubt this.