One of the most important reasons to read your credit card billing statement is so you can quickly spot any unauthorized charges. The longer it takes to recognize and report unauthorized credit card charges, the less likely it is that your credit card issuer will remove the charges from your statement.
If you report unauthorized charges quickly, i.e. in less than 60 days, your liability is legally reduced to $50 or less. However, if you wait longer than that, you may end up liable for the charges. Make sure you know the right way to handle unauthorized credit card charges.
The only foolproof way to avoid unauthorized charges is to not have a credit card. Still, there are ways you can prevent credit card fraud such as keeping your credit card in a safe place and never giving your credit card number to someone you don't trust, especially to someone who calls or emails you saying they're your credit card issuer.