Encrypt traffic to secure your site with the entry level SSL from a renowned certificate authority. If you are looking to secure multiple URLs on the same domain with this SSL then consider the RapidSSL Wildcard
Same features as the standard Rapid SSL, but can be used on any subdomains of the main domain e.g. shop.myshop.com as well as myshop.com. Cost effective if you are looking to secure more then 4 URLs on a domain.