Some thoughts on how useful Anubis really is. Combined with comments I read elsewhere about scrapers starting to solve the challenges, I'm afraid Anubis will be outdated soon and we need something else.

top 50 comments

sorted by: hot top controversial new old
[–] 207 points 1 year ago* (41 children)

The current version of Anubis was made as a quick "good enough" solution to an emergency. The article is very enthusiastic about explaining why it shouldn't work, but completely glosses over the fact that it has worked, at least to an extent where deploying it and maybe inconveniencing some users is preferable to having the entire web server choked out by a flood of indiscriminate scraper requests.

The purpose is to reduce the flood to a manageable level, not to block every single scraper request.

  • source
  • hideshow 41 child comments
  • [–] 97 points 1 year ago* (36 children)

    And it was/is for sure the lesser evil compared to what most others did: put the site behind Cloudflare.

    I feel people that complain about Anubis have never had their server overheat and shut down on an almost daily basis because of AI scrapers 🤦

  • source
  • parent
  • hideshow 36 child comments
  • [–] [S] 18 points 1 year ago* (5 children)

    Yeah, I'm just wondering what's going to follow. I just hope everything isn't going to need to go behind an authwall.

  • source
  • parent
  • hideshow 5 child comments
  • [–] 39 points 1 year ago (4 children)
  • [–] 22 points 1 year ago (2 children)

    I'll say the developer is also very responsive. They're (ambiguous 'they', not sure of pronouns) active in a libraries-fighting-bots slack channel I'm on. Libraries have been hit hard by the bots: we have hoards of tasty archives and we don't have money to throw resources at the problem.

  • source
  • parent
  • hideshow 2 child comments
  • load more comments (30 replies)
  • [–] 22 points 1 year ago (1 child)

    The problem is that the purpose of Anubis was to make crawling more computationally expensive and that crawlers are apparently increasingly prepared to accept that additional cost. One option would be to pile some required cycles on top of what's currently asked, but it's a balancing act before it starts to really be an annoyance for the meat popsicle users.

  • source
  • parent
  • hideshow 1 child comment
  • [–] 19 points 1 year ago

    The article is very enthusiastic about explaining why it shouldn't work, but completely glosses over the fact that it has worked

    This post was originally written for ycombinator "Hacker" News which is vehemently against people hacking things together for greater good, and more importantly for free.

    It's more of a corporate PR release site and if you aren't known by the "community", calling out solutions they can't profit off of brings all the tech-bros to the yard for engagement.

  • source
  • parent
  • load more comments (1 reply)
    [–] 64 points 1 year ago (1 child)

    This… makes no sense to me. Almost by definition, an AI vendor will have a datacenter full of compute capacity.

    Well it doesnt fucking matter what "makes sense to you" because it is working...
    Its being deployed by people who had their sites DDoS'd to shit by crawlers and they are very happy with the results so what even is the point of trying to argue here?

  • source
  • hideshow 1 child comment
  • [–] 14 points 1 year ago* (last edited 1 year ago)

    It's working because it's not very used. It's sort of a "pirate seagull" theory. As long a few people use it it works. Because scrappers don't really count on Anubis so they don't implement systems to surpass it.

    If it were to become more common it would be really easy to implement systems that would defeat the purpose.

    As of right now sites are ok because scrappers just send https requests and expect a full response. If someone wants to bypass Anubis protection they would need to take into account that they will receive a cryptographic challenge and have to solve it.

    The thing is that cryptographic challenges can be very optimized. They are designed to run in a very inefficient environment as it is a browser. But if someone would take the challenge and solve it in a better environment using CUDA or something like that it would take a fraction of the energy defeating the purpose of "being so costly that it's not worth scrapping".

    At this point it's only a matter of time that we start seeing scrappers like that. Specially if more and more sites start using Anubis.

  • source
  • parent
  • [–] 37 points 1 year ago (1 child)

    New developments: just a few hours before I post this comment, The Register posted an article about AI crawler traffic. https://www.theregister.com/2025/08/21/ai_crawler_traffic/

    Anubis' developer was interviewed and they posted the responses on their website: https://xeiaso.net/notes/2025/el-reg-responses/

    In particular:

    Fastly's claims that 80% of bot traffic is now AI crawlers

    In some cases for open source projects, we've seen upwards of 95% of traffic being AI crawlers. For one, deploying Anubis almost instantly caused server load to crater by so much that it made them think they accidentally took their site offline. One of my customers had their power bills drop by a significant fraction after deploying Anubis. It's nuts.

    So, yeah. If we believe Xe, OOP's article is complete hogwash.

  • source
  • hideshow 1 child comment
  • [–] 23 points 1 year ago* (2 children)

    If that sounds familiar, it’s because it’s similar to how bitcoin mining works. Anubis is not literally mining cryptocurrency, but it is similar in concept to other projects that do exactly that

    Did the author only now discover cryptography? It's like a cryptocurrency, just without currency, what a concept!

  • source
  • hideshow 2 child comments
  • [–] 11 points 1 year ago

    It's a perfectly valid way to explain it, though

    If you try to show up with "cryptography" as an explanation, people will think of encrypting messages, not proof of work

    "Cryptocurrency with the currency" really is the perfect single sentence explanation

  • source
  • parent
  • load more comments (1 reply)
    [–] 21 points 1 year ago (10 children)

    Anubis is no challenge like a captcha. Anubis is a ressource waster, forcing crawler to resolve a crypto challenge (basically like mining bitcoin) before being allowed in. That how it defends so well against bots, as they do not want to waste their resources on needless computing, they just cancel the page loading before it even happen, and go crawl elsewhere.

  • source
  • hideshow 10 child comments
  • [–] [S] 7 points 1 year ago (9 children)

    No, it works because the scraper bots don't have it implemented yet. Of course the companies would rather not spend additional compute resources, but their pockets are deep and some already adapted and solve the challenges.

  • source
  • parent
  • hideshow 9 child comments
  • [–] 13 points 1 year ago (5 children)

    To solve it or not do not change that they have to use more resources for crawling, which is the objective here. And by contrast, the website sees a lot less load compared to before the use of Anubis. In any case, I see it as a win.

    But despite that, it has its detractors, like any solution that becomes popular.

    But let's be honest, what are the arguments against it?
    It takes a bit longer to access for the first time? Sure, but that's not like you have to click anything or write anything.
    It executes foreign code on your machine? Literally 90% of the web does these days. Just disable JavaScript to see how many website is still functional. I'd be surprised if even a handful does.

    The only people having any advantages at not having Anubis are web crawler, be it ai bots, indexing bots, or script kiddies trying to find a vulnerable target.

  • source
  • parent
  • hideshow 5 child comments
  • load more comments (5 replies)
  • [–] 13 points 1 year ago* (2 children)

    There are some sites where Anubis won't let me through. Like, I just get immediately bounced.

    So RIP dwarf fortress forums. I liked you.

  • source
  • hideshow 2 child comments
  • [–] 12 points 1 year ago* (last edited 1 year ago) (3 children)

    Anubis sucks

    However, the number of viable options is limited.

  • source
  • hideshow 3 child comments
  • load more comments (2 replies)
    [–] 11 points 1 year ago

    Have you tried accessing it by using Nyarch?

  • source
  • I'm constantly unable to access Anubis sites on my primary mobile browser and have to switch over to Fennec.

  • source
  • [–] 7 points 1 year ago

    I love that domain name.

  • source
  • load more comments
    view more: next ›