The Opera development team announced a very interesting feature at their Backstage event, which took place yesterday. Opera 9.1 will include fraud protection measures that are more advanced than IE7 or Firefox 2.0. When visiting a new website, the browser will check against it's database to identify whether it is trusted or not.
Borg, Opera UI developer and Desktop team manager, explains it further: " If we know the site, there will be a small information "i" in the right end of the address field. If it's unknown/not verified there will be a "?" and if it's known as a fraudulent site we will display a warning and block the user from accessing the site."