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A comment on Cleaning up bad bots. Parent comment

Re:Cleaning up bad bots by s09dfhks on Monday September 23, 2019 @04:15PM (#21053111)
Was also curious about this step. I assume they're not going to reveal the nitty gritty details for fear of botters coding around it, but I am curious as to how you can "make them use more CPU" while crawling a website
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Re:Cleaning up bad bots by jsnell on Monday September 23, 2019 @04:23PM (#21053169)
Serve the suspected bots a page with Javascript that computes a proof of work, submits it, and gets the real page in return.

Steamspy.com seems to trigger one of these basically every time when loaded with a fresh cookie.

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Re:Cleaning up bad bots by nielsbot on Monday September 23, 2019 @04:19PM (#21053142)
Maybe it's JavaScript?
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