Brian Krebs reporting on the internal Target investigations after the chain was compromised in 2013:
In one instance, they were able to communicate directly with cash registers in checkout lanes after compromising a deli meat scale located in a different store.
It's pretty damning. I can't even remember the last time I used a debit card. I prefer to risk my bank's money at most stores. I wonder how much input Target has on the Apple Pay competitor CurrentC (another thing I'll never use). Security is not a priority for these merchants and may never be a one.