If you are running a Magento store and taking credit cards , then you should get a SSL certificate to secure your checkout screen. This is how you should do it,
1. Get a SSL certificate and then ask your web host to set it up for your domain.
2. Goto Magento Admin > Configuration > Web .
The {{base_url}} should be changed to http://www.domain.com
The {{secure_base_url}} should be changed to https://www.domain.com
3. Switch on the other option below in that page, SECURE URLS ON FRONTEND.
4. Clear your cache.
5. Test on frontend. Add a product to the cart and then try to checkout. It should take you to https .
