Anubis rarely ever annoys me (I still prefer it over cloudflare’s Mitm) but this specific visit feels almost vindictive. It used half my CPU cores at full blast for three straight minutes.
It seems to be effective since I can’t really “bypass” it with extensions, so AI crawlers probably can’t either, but damn there really should be an option to complete a manual captcha or email the administrators to complain.
As I’m typing this the challenge is still running xD
What the distributed computing stuff does is check many many potential answers. You’re only interested in the right answers, and they’re easy to verify. If there’s a concern about junk answers, the answers could probably be compared across multiple clients to verify.