In the USA, credit cards don't do anything protect anybody from fraud.
However, they have extremely robust mechanisms in place for shuffling around the consequences of all the rampant fraud that results from their complete failure to offer even the barest minimum of fraud protection. So as a consumer I get to feel protected all the same.
However, they have extremely robust mechanisms in place for shuffling around the consequences of all the rampant fraud that results from their complete failure to offer even the barest minimum of fraud protection. So as a consumer I get to feel protected all the same.