When you visit a website that uses a secure (SSL) connection, the color of the Security Status bar tells you whether the certificate is valid or not. These colors inform you about some kind of security level of the connection (certificate).
The following describes what that colors mean.
The certificate is out of date, invalid, or has an error. For more information see About Certificate Errors.
The authenticity of the certificate or certification authority that issued it cannot be verified. This might indicate a problem with the certification authority's website.
The certificate has normal validation. This means that communication between your browser and the website is encrypted. The certification authority makes no assertion about the business practices of the website.
The certificate uses extended validation. This means that communication between your browser and website is encrypted and that the certification authority has confirmed the website is owned or operated by a business that is legally organized under the jurisdiction shown in the certificate and on the Security Status bar. The certification authority makes no assertion about the business practices of the website.
More about this here.
Nov 11 2009, 10:13 AM