A couple of weeks ago we looked at negative SEO and what you can do to protect your site. One of the techniques we mentioned was hacking. Competitors, upon gaining access to a site, may alter the content or add malware to pages in the hope that Google will delist or penalize a site. Hackers may also simply attempt to use a site to spread their malware without any particular intentions regarding SEO.
We gave a number of suggestions for dealing such an intrusion, but often, after having received a warning from Google, it can be difficult to determine exactly what the Googlebot crawler is seeing.
Hackers are adept at making a site appear perfectly normal to those who go directly to a page, while serving malware or undesirable keywords and hidden links to search engine crawlers and those who arrive at a site from a search engine. What you see when you visit a site is not necessarily what Googlebot is seeing.
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