Ah, but the article is about Macs... and they're no less secure than ever.
I won't argue that iPads will make a juicy target--just take a look at what's happening to smart phones. Then again, why is it that there have been no successful malware attacks against non-jail-broken iPhones and yet the Android models are leaking like a sieve? You see, security is more than just hardware and OS, it's the ecosystem it operates in as well. It's true that social engineering could and does allow a trojan to sneak in, but it's hard to 'sneak' that giant wooden horse through the gates of Apple's so-called 'walled garden' first. To the best of my knowledge, at least as of yet no application can be installed on either a Mac or an iOS device without the user at least being notified of it. Granted, some people will fall for these tricks, but the majority know better.