I just want to highlight something that's been mentioned, but perhaps not strongly enough. This thread started out with most people speculating that some vendors were the cause of the CC fraud and that some of them might not have the best security. While this may be possible,
it is actually FAR more likely that the people experiencing these problems have had the security of THEIR OWN computers compromised. If your computer is not secure (and from my experience, most people's aren't even close) there are all kinds of ways for a virus/trojans/keyloggers to capture your CC info, bank info, Paypal info, passwords, etc. and automatically send them back to the criminals.
If you want to feel safe using your computer, you need to have:
-ALL Windows security updates current
-Virus scanner regularly updated (I use Avira Antivir)
-Firewall s/w that protects programs and network access (I use Outpost)
-Anti-spyware s/w (see below)
For those of you who've had recent problems, at a minimum I'd recommend:
Malwarebytes Anti-Malware - Reviews and free Malwarebytes Anti-Malware downloads at Download.com
Install, update, then scan. You might be surprised to find what nefarious programs are lurking on your computer.
I personally use MalwareBytes, Spybot Search&Destroy (with TeaTimer & IE Protection), and Spyware Blaster. I try not to use IE at all, except for doing Windows Updates. I use Firefox with the AdBlock Plus and NoScript plugins. In my experience, not using IE is the single easiest way to avoid problems, although it's security has been improved upon lately. But that's not to say that you won't have problems using Firefox if you don't take all of the above security measures.
I do all my banking, finances, bill paying, taxes, a lot of shopping, etc. online and I've never had a single problem or unauthorized charge on any of my CC's or PayPal.