Questions
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After hack and remediation, thousands of URL's still appearing as 'Valid' in google search console. How to remedy?
Google Search Console actually has a URL removal tool built into it, unfortunately it's not really scaleable (mostly it's one at a time submissions) and in addition to that the effect of using the tool is only temporary (the URLs come back again) In your case I reckon' that changing the status code of the 'gone' URLs from 404 ("temporarily not found, but will be returning soon") to 410 ("GONE!") might be a good idea. Google might digest that better as it's a harder indexation directive and a very strong crawl directive ("go away, don't come back!") You could also serve the Meta no-index directive on those URLs. Obviously you're unlikely to have access to the HTML of non-existent pages, but did you know Meta no-index can also be fired through x-robots, through the HTTP header? So it's not impossible https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/404 (Ctrl+F for "X-Robots-Tag HTTP header") Another option is this form to let Google know outdated content is gone, has been removed, and isn't coming back: https://www.google.com/webmasters/tools/removals ... but again, URLs one at a time is going to be mega-slow. It does work pretty well though (at least in my experience) In any eventuality I think you're looking at, a week or two for Google to start noticing in a way that you can see visually - and then maybe a month or two until it rights itself (caveat: it's different for all sites and URLs, it's variable)
Intermediate & Advanced SEO | | effectdigital0