The MasterCard/Visa symbols should be placed on the homepage, go to these links to find the suitable styles/sizes for the website:
Upload the MasterCard, Visa symbols plus if you are registered for 3 D Secure upload the Verified by Visa and MasterCard SecureCode symbols.
It is a good policy to place the VCS logo/link (as you will make use of VCS’s Thawte security certificate) next to the MasterCard/Visa symbols.
Please use the following logo:
Please forward your website logo (banner form) in .gif or .jpeg format (max.750x150 pixels) to firstname.lastname@example.org.