Computer hacking really results in financial losses and hassles. The objectives of terrorist groups are more serious. That is not to say that cyber groups can't access a telephone switch in Manhattan on a day like 9/11, shut it down, and therefore cause more casualties.
I trust online banking. You know why? Because if somebody hacks into my account and defrauds my credit card company, or my online bank account, guess who takes the loss? The bank, not me.
No company that I ever hacked into reported any damages, which they were required to do for significant losses. Sun didn't stop using Solaris and DEC didn't stop using VMS.
