Opera?  No

Chrome? No

Firefox? No

Safari?  No

Internet Explorer 9?  Yes

As per the following source article, Internet Explorer is by far the best browser at keeping Malware off our computer. (But you do need to listen to it)

In this competition, IE9 was effective at preventing 92% of malware infections.  IE8 blocked 90%.

The nearest competitor only blocked 13%.

Note: SmartScreen Filter must be ON.

(this is about stock, off-the-shelf browsers, not security enhanced browsers such as Dragon, or add-ons and security and privacy plugins, etc.)

Source

Smarphones are great devices, but their convenience brings significant privacy concerns.

Check out this Computerworld article for more information and some ways to help increase your privacy.