Here at Sucuri we handle countless cases of SEO spam. This malware involves a website being compromised in order to spread (mostly pharmaceutical) advertisements by linking visitors to unwanted websites and stuffing spam keywords into the site. These links and keywords help the spam websites to rank higher in search engines like Google, sending even more visitors to shady sites.
As a team lead on the Security Remediation Team, we are always in touch with the latest and most advanced threats. SEO Spam techniques are constantly evolving, making them difficult to detect. They employ both new and old techniques that, even after years of dealing with them, still prove to be annoying. This post will demonstrate one such case I handled that was using an seo-moz.com SEO spam campaign.