Ghost content—stale pages hidden in archives or search caches—can silently drag...

https://www.tumblr.com/weepingmountainzealot/811815072754204672/why-do-old-legal-notices-get-scraped-and-reposted

Ghost content—stale pages hidden in archives or search caches—can silently drag down your site’s authority and confuse users. If old, irrelevant material is still surfacing, it’s time for a surgical audit