Do not put your drivers license or social security numbers on your checks. This makes it easy to get a false ID made.
Do not carry your social security card or a copy of your birth certificate in your wallet or purse.
Keep all credit card receipts safe. Many criminals use numbers off receipts to defraud.
Safeguard your PIN numbers for all cards / accounts. Do not write the numbers on the cards or keep them with the cards.
Shred credit card offers you get in the mail. Thieves steal mail and trash to get the information from these letters.
Don't give out any personal information over the phone.
If someone calls and asks for personal information or bank information, tell them you will call them back. Don't trust the phone number they give you. Instead, find the number to the company or bank yourself and call that number to verify. Check out the number and the company.
If you get emails about winning the lottery or notifying you of a dead relative that left you millions of dollars in another country, do not take their word for it. Check it out before you respond.
Never give your credit card number out to someone calling you. Make charges only when you call or have verified the authenticity of the caller.
Do not put payments or checks in your mailbox for pickup. Mail them at a post office.
If possible, have all your monthly checks direct deposited to your bank rather than mailed to your home.
Think about paying online. It's safer, faster, and you get a confirmation number showing you made a payment. If the website is compromised, the business is responsible, not you.