Codeberg, a Berlin-based code hosting community, is struggling to cope with a deluge of AI bots that can now bypass previously effective defenses.

In a series of posts to the Mastodon social network on Friday, Codeberg volunteer staff said AI crawlers are no longer being kept at bay by Anubis, an AI bot tarpit .

"It seems like the AI crawlers learned how to solve the Anubis challenges," the Codeberg account said . "Anubis is a tool hosted on our infrastructure that requires browsers to do some heavy computation before accessing Codeberg again. It really saved us tons of nerves over the past months, because it saved us from manually maintaining blocklists to having a working detection for 'real browsers' and 'AI crawlers.'"

The AI bot traffic has functioned as a denial of service attack,

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