Extended Validation Certificates are a special type of X.509 certificate which requires
more extensive investigation of the requesting entity by the certificate authority
before being issued. Extended Validation SSL Certificates give high security Web
browsers information to clearly identify a Web site’s organizational identity. For
example, if you use Microsoft Internet Explorer 7 to go to a Web site secured with
an SSL Certificate that meets the Extended Validation Standard, IE7 will cause the
URL address bar to turn green. A display next to the green bar will toggle between
the organization name listed in the certificate and the Certificate Authority (VeriSign,
GeoTrust, Thawte). Firefox and Opera also support green bar identity with later
browser versions. Older browsers will display Extended Validation SSL Certificates
with the same security symbols as existing SSL Certificates. EV certificates offer
the highest assurance as CA conducts strong business validation for SSL issuance.
EV certificates offer the highest data encryption and browser compatibility. EV
certificates supply complete business information of the entity along with business
name, locality, contact info and the validating certificate authority name.