Here follows an amateur's answer- I suspect it is something as simple as they have not signed up to the voluntary security certificate authentication scheme. This is just another level of assurance that the website is all above board and has been security checked by a third party. You have a number of options:-Why does Internet Explorer continually keeps blocking the "Newsnow" website saying that it has "Security Certificate Errors" and I have to give permission to accept it.....I have Norton cleaning up every day after them.