MINIMIZE CARD USE TO AVOID THE SCAMMERS

I’m not sure what to make of this story, but it points out something that has given me some pause recently.  With the ubiquity of credit card and debit card use, even for small transactions at remote terminals, like parking meters, how easy is it for thieves to compromise those terminals and obtain the information necessary to fraudulently use the information on your card?
I was surprised to see recently at a football game that they now take credit and debit cards at the concession stand.  When did that happen?  
The story at the link highlights the problem.  You can pay for just about anything, just about anywhere, with a card.  There are now many people using mobile card machines.  How do you know they are not going to steal your card information?
I don’t claim any particular expertise, but one thought that occurs to me is that with a credit card, you have some protection in that you won’t be held liable for fraudulent charges.  With a debit card, on the other hand, the thieves can empty the bank account that is connected to that card.  I don’t know if it’s even possible, or how hard it is, for the account holder to get reimbursed when that happens.
My way to minimize this risk, which I have been doing for a long time, is this: I have a credit card with a relatively low limit that I use only at places like gas stations and parking kiosks.  I also still pay cash for small transactions wherever possible, like at the concession stand at the football game.  They do still take cash there.