Let's assume you have 2 websites, Site A and Site B. Site A uses 100% White Hat SEO and Site B uses some Black Hat and Grey Hat SEO. There are no links between either of these sites but you got both of them registered in the Google Search Console and Google Webmaster Tools. One day, site B gets penalized by Google. Will Site A remain safe? What if Site A is also hosted on the same server as Site B? I know, hosting a White Hat site on the same server as a Black Hat site could be playing with fire but I'm curious if anyone has actually gotten their White Hat sites penalized because Google found out you also own some Black Hat sites so they penalized ALL of your sites across the board. I'm asking this because I'm considering using some Grey/Black hat strategies (i.e. PBNs) on some sites that I've put a lot of work into but have failed to rank as a last ditch effort. If those sites are receiving effectively 0 traffic and you use Black Hat on them and get them penalized, then they'll still just be receiving 0 traffic. But if the penalty also ends up killing my White Hat sites, I'm probably gonna have to rethink this strategy. Thanks. Edit: Again, I repeat for the 1000th time: NO LINKS exist between Site A and Site B nor do I have any intentions of linking the two sites with each other!!!!!