are there some websites that are more prone to inflict a virus than others. What are the worst ones

Hello @,
 
Welcome to the Webroot community.
 
There are definitely sites that are more prone to attack than others based off the number of users that visit the site.
 
Really the ones you want to watch out for are the ones that are very new, or not very popular.
 
If you are ever curious about a website you can check it in our system here.
 
This site will give you an idea of the age of a website, the popularity, and also if there have been any infections in the last 12 months.
 
I hope this has answered your question and if you need anything else, please do not hesitate to let me know.
 
Best Regards,