ASEOHosting, a leading provider of multiple IP hosting, has expressed its concern at the recent spate of SEO poisoning attacks against WordPress installations and other content management systems. The company has released an advisory to web hosting clients in order to increase awareness of SEO poisoning and how site owners can avoid being a victim.
An SEO poisoning attack involves the exploitation of vulnerabilities in content management systems to inject malicious code that alters the content of web pages. The most frequent form of SEO poisoning attack will insert dozens of links to sites the attacker aims to improve the search ranking of. More sophisticated attacks will create doorway pages filled with the attacker’s content that immediately redirect users to advertising, affiliate marketing, or malware sites. In both case, the added content will not be visible to normal visitors or the site owners, only to search engine bots.