Dealing With Malware & Hacked Sites: And The SEO Factor
Okay, so your site has been hacked. It is a common problem to many webmasters despite of their hard work to protect their sites from being hacked.
Google explains this in their Webmaster Tools Help Forum:
If your site has been infected, it is generally because some vulnerability has allowed a hacker to take control of your site. The hacker may change the content of the site (for example, to add spam), or add additional pages to the site, usually with the intent of phishing (tricking users into parting with personal and credit card information). Alternatively, they may inject malicious code (malware)—for example, scripts or iFrames that pull content from another website that tries to attack any computer that views the page.
The term “malware” covers a...