I have had two VISA cards hacked - the bank came good both times to cover the dollars spent - but that got me interested in how that could happen - the cards were in my wallet at the time that the funds were being spent in Toronto or wherever. Turns out there can be "theft" - a payment processor employee actually used your information to incur costs (or sold the information to someone who used it to incur costs). Is also a "brute force" attack - so pick a random card number - then use computers to fly at it with bazillion passwords - occasionally (or at least often enough) get a "hit" - a "match" that allows a $2 charge to go through. Is wide open then to spend whatever to your limit using that information - makes sort of "joke" out of instructions to "sign" back of card - do not need the card to charge that account - just need the numbers, is all. Lately, I've been using only my mobile phone because it has the most convenient payment method. I can pay for everything I want with just a tap on my phone. You can even play online using this method. Just check out **Image and video linking functions will be enabled after you have contributed more to the forum** about various google pay casinos. There are already quite a few, and this is the future of payments. You should give it a try too. But compare to old days when we paid with personal cheque - that usually included your home address (often your name and home phone number), your bank account number, your bank's transit number and a sample of your signature - that you handed over to a complete stranger (a clerk in a store) - what could go wrong with that??
If I was running a business (which I am not) that accepted credit cards, every customer would pay a bit more to cover the one or two losses that I would incur - those losses would NOT be coming out of my pocket.
The only way that I know to protect from unauthorized charges is to "lock out" your card via your bank - that means no one - not even you - can use that account until you unlock it - a royal PITA to remember to unlock it before a purchase and then to re-lock it afterward. Maybe there is a better way? Getting an email or text does not prevent a charge from having happened, although you might know about it before your paper statement shows up.