That. >> you shop online and travel around. your credit card is in hundreds of data bases. rental car company and hotel. if you don't get a new credit card number, not an account, the odds of being hacked are high. sometimes you get new credit card number on the anniversary when you get a new number in the mail. new number, not a new account. it prevents you being hacked from a site that is hacked. you want to repin. if you use a debit card online, which we don't recommend, you should repin every six months. a little pain. but what happens is when you use the debit card and punch in the pin nu...