IE7 certificate check
Internet Explorer 6 had a local list of trusted certificate authorities, when accessing a secure website, it would check locally if the certificate is valid and return right away to the user. When Internet Explorer 7 was released, it came with a new idea, the list came empty and IE7 had to communicate with Microsoft datacenter to check it’s status. If it is valid, then it will show a green background in the URL prompt, if it’s not or it could not communicate with the datacenter, it will show a red background in the URL prompt and a warning page…