Funny I remember the botnet counting being around the 600000 machine mark.
How do you change the default browser in iOS? Yes I know you can install other browsers, but how do you change the DEFAULT browser
You remember right, it was around that mark. And it's absolutely miniscule compared to windows botnets that run as we speak
Furthermore the only reason those people ended up as part of the botnet was that they downloaded warez. It's not like with windows where all you need to do is browse a website without noscript and you're pretty soon infected.
The whole browser issue is completely pointless - there are no 'in the wild' browser attacks that target iOS platform as we speak, they've only been showcased in events like pwn2own and then released for Apple to be fixed. There ARE however multiple 'in the wild' browser, reverse tcp, flash etc. based attacks for the droid not even mentioning the thousands of new malicious apps that are released to the play store and removed only after thousands of users per app have already been infected. Those who enabled content outside play store are completely left dry.
These are published indisputable facts that you cannot change even if you would like to.