I'm genuinely interested in why not? Maybe the way I wrote it was a bit flippant, but surely bank computers that control the flow of trillions of dollars are a

I'm genuinely interested in why not? Maybe the way I wrote it was a bit flippant, but surely bank computers that control the flow of trillions of dollars are a huge target. The fact there has never (?) been a massive breach that resulted in billions beings stolen must be a sign that someone is doing something right. No?