this post was submitted on 23 Jan 2025
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A pseudonymous coder has created and released an open source “tar pit” to indefinitely trap AI training web crawlers in an infinitely, randomly-generating series of pages to waste their time and computing power. The program, called Nepenthes after the genus of carnivorous pitcher plants which trap and consume their prey, can be deployed by webpage owners to protect their own content from being scraped or can be deployed “offensively” as a honeypot trap to waste AI companies’ resources.

“It's less like flypaper and more an infinite maze holding a minotaur, except the crawler is the minotaur that cannot get out. The typical web crawler doesn't appear to have a lot of logic. It downloads a URL, and if it sees links to other URLs, it downloads those too. Nepenthes generates random links that always point back to itself - the crawler downloads those new links. Nepenthes happily just returns more and more lists of links pointing back to itself,” Aaron B, the creator of Nepenthes, told 404 Media.

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[–] daniskarma@lemmy.dbzer0.com 22 points 6 days ago* (last edited 6 days ago) (4 children)

Yeah, that has like 0 chances for working. At most it would annoy bots for web search, at least it has a proper robots.txt.

But any agent trying to process data for AI is not going to go to random websites. It's going to use a curated list of sites with valuable content.

At this point text generation datasets can be achieved with open data, and data sold by companies like reddit or Microsoft, they don't need to "pirate" your blog posts.

[–] ShortFuse@lemmy.world 13 points 6 days ago (1 children)
[–] LovableSidekick@lemmy.world 6 points 6 days ago

LOL wow, this is probably the most elegant way to say what I just said to somebody else. Well written web crawlers aren't like sci-fi robots that rock back and forth smoking when they hear something illogical.

[–] brb@sh.itjust.works 12 points 6 days ago (1 children)

What's stopping the sites with valuable content from using this?

[–] FaceDeer@fedia.io 2 points 6 days ago (1 children)

A bot that's ignoring robots.txt is likely going to be pretending to be human. If your site has valuable content that you want to show to humans, how do you distinguish them from the bots?

[–] nucleative@lemmy.world 6 points 6 days ago

I think sites that feel they have valuable content can deploy this and hope to trap and perhaps detect those bots based on how they interact with the tarpit

[–] LovableSidekick@lemmy.world 3 points 6 days ago* (last edited 6 days ago)

True to a limited extent. Anyone can post a link to somebody's blog on a site like reddit without the blogger's permission, where a web crawler scanning through posts and comments would find it. But I agree with you that a thing like Nepehthes probably wouldn't work. Infinite loop detection is an important part of many types of software and there are well-known techniques for it, which as a developer I would assume a well written AI web crawler would have (although I've never personally made one).

[–] nepenthes@lemmy.world 11 points 6 days ago

What a great name!

[–] neon@ani.social 5 points 6 days ago

This is really interesting.

[–] BurnedDonutHole@ani.social 224 points 1 week ago (22 children)

My new favorite is asking if it's cheating to look at your opponent's pieces in chess.

[–] lemmeBe@sh.itjust.works 42 points 1 week ago* (last edited 1 week ago) (7 children)

When I ask the same in Perplexity, I get this: 1000083824

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[–] patrick@lemmy.bestiver.se 148 points 1 week ago (14 children)

This showed up on HN recently. Several people who wrote web crawlers pointed out that this won’t even come close to working except on terribly written crawlers. Most just limit the number of pages crawled per domain based on popularity of the domain. So they’ll index all of Wikipedia but they definitely won’t crawl all 1 million pages of your unranked website expecting to find quality content.

[–] Bogasse@lemmy.ml 3 points 6 days ago* (last edited 6 days ago)

I think this rate limiting mechanism is mostly a niceness rule : you should try to not put too much pressure on any website and obey the rules defined in its robots.txt.

So I guess this idea is not bad as it would mostly penalize bad players.

[–] OsrsNeedsF2P@lemmy.ml 79 points 1 week ago* (last edited 1 week ago) (6 children)

Can confirm, I have a website (https://2009scape.org/) with tonnes of legacy forum posts (100k+). No crawlers ever go there.

It's a shame that 404media didn't do any due diligence when writing this

[–] Kornblumenratte@feddit.org 1 points 6 days ago

Sorry to tell you, but you are indexed at least by duckduckgo, bing, ecosia, startpage, google, and even one of searx' crawlers has payed you a visit.

I think you may have just misunderstood the post.

It's not intended to trap the web crawlers indexing content for google search.

It's intended to trap AI training bots harvesting sentences in order to improve their LLMs.

I don't really have an answer as to why those bots don't find your content appealing, but that doesn't mean that Nepenthes doesn't work.

[–] affiliate@lemmy.world 40 points 1 week ago

No crawlers ever go there.

if it makes you feel any better, i would go there if i was a web crawler.

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[–] JackbyDev@programming.dev 53 points 1 week ago (2 children)

Did you read the article? (There is a link to a non walled version.)

Since they made and deployed a proof-of-concept, Aaron B said their pages have been hit millions of times by internet-scraping bots. On a Hacker News thread, someone claiming to be an AI company CEO said a tarpit like this is easy to avoid; Aaron B told 404 Media “If that’s, true, I’ve several million lines of access log that says even Google Almighty didn’t graduate” to avoiding the trap.

[–] realharo@lemm.ee 14 points 6 days ago* (last edited 6 days ago) (1 children)

Millions of hits may sound like a lot, but you need to view that in context.

[–] Zacryon@feddit.org 4 points 6 days ago (1 children)
[–] Warl0k3@lemmy.world 9 points 6 days ago* (last edited 6 days ago) (1 children)

The modern internet. Millions of hits is very normal - one of my domains is just 30 year old ASCII art of a penguin, and it gets 2-3 million a month from bots/crawlers (nearly all of them trying common exploits). The idea that the google spider would be notably negatively impacted by this is kinda naive. It could fall fully into the tarpit and it probably wouldn't even get flagged as an abnormal resource allocation. The difference in power between desktop and enterprise equipment is at this point almost inexpressible.

[–] JackbyDev@programming.dev 3 points 6 days ago* (last edited 6 days ago)

People think of hacking like a thief with a lockpick. It's oftentimes more like someone methodically checking every door in the neighborhood for any that are unlocked.

[–] ShadowWalker@lemmy.world 10 points 6 days ago

If it is linked to the Internet then it'll be hit by crawlers. Their "trap" isn't any how many show up but how long each bot stays on their individual site.

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[–] Jordan117@lemmy.world 67 points 1 week ago (11 children)

More accurately, it traps any web crawler, including regular search engines and benign projects like the Internet Archive. This should not be used without an allowlist for known trusted crawlers at least.

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[–] akilou@sh.itjust.works 62 points 1 week ago (5 children)

But does running this cost the AI bot at least as much as it costs you to run?

[–] doylio@lemmy.ca 57 points 1 week ago (4 children)

Picking words at random from a dictionary would not be very compute intensive, the content doesn't need to be sensical

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[–] FaceDeer@fedia.io 47 points 1 week ago

This sort of thing has been a strategy for dealing with unwanted web crawlers since web crawlers were a thing. It's an arms race, though; crawlers do things to detect these "mazes" and so the maze-makers keep needing to up their game as well.

As we enter an age where AI is effectively passing the Turing Test, it's going to be tricky making traps for them that don't also ensnare the actual humans you're trying to serve pages to.

[–] count_dongulus@lemmy.world 40 points 1 week ago (1 children)

This won't work against commercial crawlers. They check page contents with something similar to a simhash and don't recrawl these pages. They also have limiters like for depth to avoid getting stuck in circular links.

You could generate random content for each new page, but you'll still eventually hit the depth limit. There are probably other rules related to content quality to limit crawling too.

[–] meyotch@slrpnk.net 37 points 1 week ago (5 children)

True, this is an arms race situation after all. The real benefit of this is creating garbage training data that makes garbage models. So it’s not just increasing the cost of crawling, it increases the cost of stealing everybody’s shit because you need extra data quality checks. Poisoning the well.

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