Well, my wife think Im a weirdo because the two or three times that I absolutely needed to tell her our bank account password by the phone (she forgot it twice) I gave her 1/3 of the numbers at a cell-to-cell call, 1/3 in another fixed-to-fixed call and the last bit by e-mail. Today she is a little more concerned about security, but we slashdot nerds are not the rule. Everyday I see people typing their bank passwords in the open without worrying if someone is seeing, or givint out credit card information out loud.
About this specific trojan, this is not a surprise. We have the same problem in every OS we run - and iOS is not different, even with the draconian way Apple runs the store - and, lets face it, they do it not for our security, but for pure profit.
I have an Android phone and feel as safe as I feel in every other device (mobile or not): as safe as the softwares I run and the steps I take to prevent trojans, virus and such - but never 100% safe.