To verify whether the seal displayed on a CA's Web site is authentic, the customer can:
Click on the seal, which links the customer through a secure connection to a WebTrust seal verification page hosted by the seal manager. It identifies the CA and confirms that the CA is entitled to display the WebTrust seal. It also provides links to the appropriate principle(s) (that is, the WebTrust for Certification Authorities principles) and other relevant information
Access the list of entities that have received a WebTrust seal; the list is maintained by the seal manager at www.webtrust.org/abtseals.htm. A CA is registered on this list when the seal is issued