Heh - that article title is pretty bad journalism, IMHO. It's a statement taken massively out of context and kind of specious, to say the least.
From the original article that this website quoted - which is located on WSJ.com:
After spending weeks to resolve a massive Internet security breach, Sony Corp. Chief Executive Howard Stringer said he can't guarantee the security of the company's videogame network or any other Web system in the "bad new world" of cybercrime.
and this:
Mr. Stringer, 69 years old, said maintaining the service's security is a "never-ending process" and he doesn't know if anyone is "100% secure."
He said the security breach at PSN, Sony Online Entertainment, an online game service for personal-computer users, and its Qriocity streaming video and music network his company could lead the way to bigger problems well beyond Sony, or the gaming industry. He warned hackers may one day target the global financial system, the power grid or air-traffic control systems.
He's not talking about securing PSN - he's talking about guaranteeing that PSN - or any other non-Sony website - can't be compromised. That's just common sense - given enough will, anything can be compromised. The trick is to either offer some incentive to not hack you - i.e. OtherOS - or harden your system enough where hackers move on to an easier target.
Cheers,
Paul