If you aren’t a paypal user, I strongly suggest you to be one. What paypal does is that it allows you to make purchases online without giving your card information away every single time, offering a secure connection with them as intermediaries. Paypal has politics which protects both the customers and the sellers, allowing the creation of “disputes” where you can get your money back if you were scammed, or didn’t receive an item, or if it was defective. If by any chance you suspect someone has accessed your account and you see purchases you didn’t make, or you see payments which you don’t remember ever doing, you can also request for them to return the money back to you.
One day when I entered my account I saw that apparently I had sent multiple amounts of money to another paypal account. I quickly cancelled the ones that I could and changed my password, but not all could be cancelled because the money had already been withdrawn from the other account. I asked Paypal’s customer service ASAP what could be done, and they checked my case and returned the money to me without any problems.
Besides the fact that it really saves you time not having to get your card info every single time –and just once when you initially open your account–, having the knowledge that your money is protected and that they have an amazing customer service should any problem arise reaaaaaaally gives you peace of mind.