If you run your infrastructure on a “computer” directly connected to the Internet such that it puts hospitals and power grids in danger, then maybe you're in the wrong profession.
@coldpie: ‘If you're putting the words "secure" and "computer" in the same sentence, you've already lost. There is no such thing as computer security.’
We should borrow an idea from nature and not create a monoculture. That way when a ‘computer virus’ comes along, it won't run rampant through the ecosystem.