URI previews for Stack Exchange have failed across all Discourse instances

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AI-generated summary

Users reported that URI previews for Stack Exchange have failed across all Discourse instances. Falco confirmed that this is due to Stack Exchange implementing Cloudflare protections that block all bots from accessing their site, meaning the behavior aligns with Stack Exchange’s current security policies.

1

Is this due to something on SE’s end? I ask per:

https://meta.stackexchange.com/questions/420226/external-websites-have-recently-become-unable-to-generate-hyperlink-previews-for#comment1391493_420226

2

Yes, they are behind Cloudflare and blocking all “bots” from reaching their site now. So this is working as SE wants it to.