51% of online Americans aware of the link between the browser and PC security

Opera Software released a survey of 2,835 online users in the USA, which indicated that only 51% of what it called the "adult online population" were aware that the type of browser can affect a computer's vulnerability to malicious software, such as viruses and spyware. 11% of those asked said they had switched browsers for security reasons. 49% of those asked did not know that their choice of browser can make a difference, including 17% who thought it had no effect.