Most people are familiar with good SEO, the kind that helps you increase you rankings and your ability to be found. Negative SEO is an unethical practice that mistakenly or deliberately targets a specific website. It can be a result of a professional who is not properly optimizing your website, a competitor who does not like your website, or a hacker who just wants to cause harm.
Although these occurrences are somewhat rare, a website professional knows how to identify these negative “attacks” using analytics and can correct and prevent them.
The best defense against negative SEO is making sure your website’s content and structure is solid and that you have good quality links pointing to your website as well as out to other websites.