Defense measures against bots
Some programs used to trap bad behaving crawlers, the most offensive ones are suspected to be used to train LLMs.
Crawler tarpits
These programs create sprawling web mazes used to distract these crawlers away so they don't request more compute-intensive sites.
Nephentes
Url
https://zadzmo.org/code/nepenthes/
Bot blockers
Detect bots and block their access.
Anubis
Uses Proof Of Work to detect crawler bots and block at scale their access to a site.
https://anubis.techaro.lol/
Docs
https://anubis.techaro.lol/docs/
On GH
https://github.com/TecharoHQ/anubis