I just want to note that after MtGox got severely hacked, it became one of the most secure Bitcoin exchanges out there.
Exactly how have you made the assessment of the security of the Mt. Gox platform that allows you to make this claim?
Tough hit Zhou! I hope P2SH will leave major hacking incidents behind us, another great lesson learned here.
I doubt it will. It will make it harder, no doubt about that, but theft will never be prevented. All we can hope for is a reduction in these occurrences, a lower profit to work ratio (how much work the thief has to put in for a certain amount of profit). But as soon as the price of Bitcoins double, the profit to reward ratio will double as well.