Lets take the first comment for example:
>Holy fucking shit. That's how I got hacked. 5/25/2016 and 5/28/2016, they logged into one of my computers at 3:24AM both days and used my PayPal, Microsoft account, eBay account, to buy tons of codes for different online stores. I just checked my browser history on that computer and sure enough, all those sites were visited. My bank took care of everything, so did PayPal and Microsoft. It was fucking teamviewer. I enabled TFA for the time being and turned off all computers connected to teamviewer.
This is ridiculous, if someone had in fact hacked teamviewer they wouldn't be wasting their precious time by stealing a couple of bucks from this guys paypal account. (Paypal accounts are essentially worthless, you can buy them by the thousand on various forums)
A far more credible theory is that some bot is either grabbing teamviewer credentials, and those are now being sold on fraud forums.
TeamViewer is used to manage literal fucktons of PoS infrastructure it being compromised would be a far bigger deal than the Target breach.