@blackbird71 thank you very much
I use Addon "Smart HTTPS" for secure browsing.
But Opera will also protect me from this threat?
Smart HTTPS only attempts to cause all browser connections to be https "if available"... if the server for the http URL doesn't have an https option, Smart HTTPS allows the connection to continue as http. That means a malicious http server that refuses the https attempt will be allowed to pass data to/from your browser via the http protocol. Hence, little or no protection is afforded for embedded http calls in an https website's scripting. Opera provides the warning block to prevent such an http access from an https-site's script.
Is there any way to disable this warning form setting? It is annoying and it shows on top of every page I go.