Pharma Spam or Pharma Hack is type of SEO spam used by hackers to improve SEO rank of websites selling pharmaceutical products like Viagra, Cialis, Xanax, Valium, and Celebrex. This kind of attacks involves the addition of new pages or alteration of existing pages to add links for SEO purposes.. These links will point to other hacked websites with more links or directly to the money sites —. their money sites will rank higher and make more money.. The hacker must find way to upload malicious file to your website before they can run their spam scripts. you may never see them because you do not know the URLs.. The time you will be made aware of their presence may be when you receive penalty from Google or someone tells you that they have found spam on your website. You will need to generate new WordPress salt keys and change your passwords for your FTP accounts, databases, WordPress users and hosting accounts. Once you have repaired your website, go to Google's Search Engine Console and using Remove URLs Feature to eliminate any references that Google has to the infected pages. You will then have to go to Search Traffic > Manual Actions and Request Review of your website..
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