I think it's no longer accurate to think of this as "MS-focused attack but only because OS X is not as popular". Today, iOS is used by many more people than OS X as their primary computing device and I would say it's pretty safe from this type of attack.
Only because people can't email you apps to run on your phone. Which, last I checked, is why HN thinks iOS is a terrible, freedom restricting walled garden of evil.
iOS is fantastic if you aren't smart enough to use a computer. Most HN users know better than to run arbitrary apps from email, so for them it is a restriction that only prevents them from using their own device as they wish to use it.
