If AT&T had left printouts of highly personal data in a dumpster and someone had found it right there, then I don't think you would've had a problem fingering the culprit. AT&T, right? Dumpster diving would certainly not get someone 41 months in the slammer (e.g California v Greenwood).
In other words, it was right there in the open. Hence, the blame lies squarely with AT&T for not properly securing their customers' private information.
This is a terrible analogy, and tnk1 has covered most of it. Let me further clarify that most locations for AT&T that I've been to do not maintain their dumpsters outside their curtilage. This would negate the reference to Greenwood v CA. Additionally, I know AT&T regularly uses a shredding company, so any really important stuff (especially for government contracts) goes through that. In any case, I think the better analogy is if I place my wallet on a counter and walk away from it. I say that it's still my property and you do not have the authority to go to it, open it, and take the money. You, apparently, think it's perfectly okay to take the money out of my wallet. Or, if you think taking the passwords was not "stealing" then let's say I have a password on a piece of paper in my wallet, it's okay to open up the wallet, copy it, and put it back. Let's take this one step further, though, which is closer to what happened. Let's say you're skilled enough to pick my pocket (e.g., skilled enough to spoof addresses). You pick my pocket, copy off the passwords, and then drop the wallet or somehow give it back (reverse pick pocket?). That's okay to you?
Your obvious lack of parenting skills is not his responsibility.
This is almost a non sequitur. I don't care to explain the origin of goatse to a 6yo and I have an obvious lack of parenting skills? Honestly, I would have thought the opposite! Do you really agree with the idiotic response by VortexCortex? You must like goatse, then?