I was not referring to foreign governments. I was referring to crooks of any flavor/country. They are interested in your financial information - they will hack into any database that provides them with the information they want: credit card numbers, SSN, or anything else that will facilitate ID theft, scamming you out of money, robbing you when you're not home, etc.
My Yahoo email account has been hacked into several times; fortunately, all they got were email addresses - unfortunately, they are now using my email address to send spam with extremely obnoxious/ se....ly oriented subject lines using my address as the "from" address. Changing my address will not stop that since they already have one they are using from their servers in Argentina, Russia, Brazil, etc. My reputation could be ruined for life if a recipient were to make a case of it.
Nothing - and I mean absolutely nothing - is safe online.