Comment privacy.com (Score 1) 225
I'm a big fan of privacy.com. It lets you create an unlimited number of "burner" credit cards, that can have monetary limits, frequency limits, can be paused and unpaused at will, can be one-time-only use, and can't be used at places other than where you made the initial transaction. You have to link a bank account to your privacy account for funding the cards, but I have a burner, free checking account for that. They are also great for free-trials that start charging you after the trial period -- oops, transaction denied. I don't use it for everything since my regular cards have cashback bonuses, but I certainly use it on places I'm not familiar with or I don't trust their security. It has saved my ass more than once.