My PS3 is going in a DMZ, right now.
For anyone curious about what a "real" DMZ is:
A DMZ doesn't always mean "wide open". It means that you create a separate network with a hard break between the DMZ network and your "trusted" network. You can, and should, firewall your DMZ network at the internet facing side as well. The stack looks something like this:
As others have pointed out, for a MiTM/ddos attack, the ps3 isn't a better target than anything else out there. In fact, given the amount of ps3s, it makes more sense to go after windows update and get what is likely an order of magnitude more infected windows machines.
Even if I had a ps3 (which I don't, while I wanted one about 6 months ago, the geohot incident has dissuaded me from touching new sony equipment), I wouldn't be worried.
Of course, the Xbox is also, but the point made in the article was that the PS3 botnet would be quite a lot stronger than a 360 botnet.
Hacking microsoft/google/apple/etc would lead to having to use software on a botnet comprised of a wide range of hardware...
So on what applications does that tradeoff of utility against the difficulty of hacking Sony make sense?
Edit: I realize none of this this easy, I'm just trying to play devils advocate regarding the glossed over "If they then compromised the PSN update servers...".
That's supposing that someone wanted a botnet..and we're all supposing they had a great deal of planning. I'd expect such an event to hinge on a great deal of chance..
* The recent publication of the PS3 private key and shitstorm surrounding Geoh0t debate gives good cover.
* Sony appears to be a weaker than average target, or is at least receiving a lot of attention from the cracking community, resulting in a lot of usable information for orchestrating an attack.
* The PS3 is known for its ability to act as a distributed computing power house, making it attractive to anyone whose purposes require a large amount of processing power.
Given the recent increase in sophistication of malware and the attacks against Comodo, I'm not sure it's wise to write off this attack as such a simplistic plot as a MiTM attack or simple spam network. In a crypto cracking role, the PS3 is a very powerful tool. This could be a single step toward a greater goal involving the breakage of another target.
"Surely everyone has heard the basics by now, and I don’t have any new information to add, but my hobby is putting 2 and 2 together and imagining worst-case scenarios."