To further avoid viruses and fraudulent sites you can check the integrity and security of any website by using the following tools:
http://www.urlvoid.com/
URLVoid is a free service that analyzes a website through multiple blacklist engines and online reputation tools to facilitate the detection of fraudulent and malicious websites. This service helps you identify websites involved in malware incidents, fraudulent activities and phishing websites.
http://www.pcworld.com/article/248963/how_to_tell_if_a_link_is_safe_without_clicking_on_it.html
- This site gives some quick tips you can follow to help protect you from fraudulent sites.