I recently posted about archive.today (also archive.is, archive.ph, archive.fo, archive.li, archive.md, and archive.vn) using its archive links to launch a ddos attack against a blogger they accused of doxing them: https://mathstodon.xyz/@11011110/116028203974257264

That attack triggered #Wikipedia (at least, the English part) to discuss banning archive.today links, and the ensuing discussion turned up evidence that (as part of the same dispute with the same blogger) archive.today had also tampered with its archived content to falsify certain names in old archived links: https://en.wikipedia.org/wiki/Wikipedia:Requests_for_comment/Archive.is_RFC_5#Evidence_of_altering_snapshots

This led to a quick close of the discussion and a consensus to remove all archive.today links from Wikipedia: https://en.wikipedia.org/wiki/Wikipedia:Archive.today_guidance
For the same reasons I have removed all archive.today links from my blog, where I had been occasionally using them as a convenient way to access paywalled content. I suggest that others remove their links as well, lest you unwittingly become part of additional ddos attacks and falsification.