About 20 articles ranked on first page of Google after years of work are now GONE and now on 5-6th page, CRUSHED... This happened after a "hacker" threatened my blog and said he would "destroy it". I'm not sure WHAT the hell he did or could do. I checked ahrefs and all links are normal, nothing out of the ordinary or new that would raise a red flag though it may take a while to update. This JUST happened after he said it. (I did also change some of the headers to a lot of articles by SHORTENING them, but that should HELP SEO, not hurt it, so I don't think that is the issue.) Any help?