Mistake No. 18: Not checking your statements for problems
You receive a bill from each credit card that you use each month. Do pay what you owe promptly and in full, but also take a minute to review all the charges. Are they all yours? If an identity thief seems to have been using your credit card or card number to buy things, let your card company know as soon as possible. The good news is that you probably won’t owe more than$50, if that — even if a crook charged a new refrigerator to your card. (Some cards feature zero liability.)
Fraudulent charges on credit cards are not uncommon, so be on the lookout for them. Note that even a tiny unauthorized charge of a few cents should be reported, as those are often part of a scam where a crook is testing lots of card numbers to see which ones work before making a big charge on the card.