The majority of the time it will be easy to tell if your site has been affected:
- It will not work at all
- It may redirect to some unintended content
- Parts may be missing or not function properly
Occasionally however, the attack can consist of cloaked malicious code which is undetectable to the human eye. Incidents of this nature can affect your search engine rankings as the content could be interpreted as spam and result in your website being flagged or de-listed.
Spam SEO attacks are also on the rise that target and manipulate a web site’s search engine optimization.