Agent Larkin said:
I have to disagree.
Iran is spiteful enough that they might just pull this off.
Why would Iran attack a Japanese company affecting servers as much in Europe and middle east as America?
Iran would attack Xbox Live if any gaming network. Or some thing that fits into their paranoia of Americana and zionism, not PSN. In fact they wouldn't attack a gaming network because I don't think the leadership has any appreciation of video games nor their popularity.
Iran would more likely attack industry or the American establishment. maybe hack a jewish/israeli website.
China also may have the moxie for this but their interest is not trolling but power. They aim to increase governmental control and security, so that means dissidents, protesters and anything to do with tibet being independent will be targeted.
Not PSN.