How do you pay for stuff online?

Should you use credit cards, debit cards, e-transfers, PayPal, Google, Apple Pay...

My recommendation is to consider getting a second credit card, one with a low limit.

The reason is you are mitigating the risk exposure against yourself. It helps when you are travelling or you have an online purchase to make that you aren't quite sure about.

Card holders are generally protected against unauthorized transactions, however it is such a pain to suddenly be without a credit card (if you are travelling) and having to update all of your pre-authorized payments on all your accounts (think of your Netflix, cellphone, utilities, online shopping, etc)... Having a second credit card makes sure that the huge inconvenience to you if and when it gets compromised is minimized.

You should also consider alternatives such as PayPal, Google, or Apple Pay. These systems use one-time payment "tokens" for the purchases and someone can't keep charging additional times to your account. This gives you a lot more control over your money. There are recurring payments but you can review them and cancel at any time. With credit cards, you hope they delete your number and don't use it again and it doesn't get stolen in some data breach hack.